CN110019589A - Display method for electronic map and device - Google Patents
Display method for electronic map and device Download PDFInfo
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- CN110019589A CN110019589A CN201710795134.0A CN201710795134A CN110019589A CN 110019589 A CN110019589 A CN 110019589A CN 201710795134 A CN201710795134 A CN 201710795134A CN 110019589 A CN110019589 A CN 110019589A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/29—Geographical information databases
Abstract
The invention discloses a kind of display method for electronic map and devices, belong to electronic map technique field.The described method includes: by multiple identical faces types and the background surfaces of adjoining carry out the first merging treatment and obtain at least two merging faces, or stating merging face includes an independent background surfaces；At least two merging faces are subjected to the second merging treatment and obtain at least one super face, each super face includes belonging to different sides type and at least two merging faces with inclusion relation；Display includes the map user interface in super face.The present invention by by different type and with inclusion relation merging face merge after show, solve the problems, such as in the related technology only by same type and with syntople background surfaces merge into merging face show caused by electronic map show effective information missing, its not only can be big with display area merging face, can also show include relatively small area in larger area merging face merging face, the display for increasing effective information, more completely shows electronic map information.
Description
Technical field
The present embodiments relate to electronic map technique field, in particular to a kind of display method for electronic map and device.
Background technique
Electronic map is the map for storing and consulting in a digital manner using computer technology.In electronic equipment to electronically
During the data loaded and displayed of figure, needs to load map datum from background server and carry out on the screen of the electronic device
Display.
It include the map elements such as land, river, lake, island on electronic map.Map element can use a background surfaces
It indicates, for example an island indicate with a background surfaces；The merging face that map element can also be constituted with multiple background surfaces
It indicates, for example a lake indicates with the merging face that three adjacent background surfaces are constituted.Wherein, a lake is split
It is divided into three background surfaces, is because for the factors such as distinguishing different map elements, be conducive to storage and be conducive to calculate in electronic map
And there are some map sheet lines, contour line and/or cut-off rule, the corresponding face in a lake is split as multiple with identical by these lines
Noodles type and the background surfaces to adjoin each other.Wherein, the difference of element, the noodles type of each background surfaces can be water according to the map
System, land, island etc..
When showing electronic map, electronic equipment can carry out multiple background surfaces for having identical faces type and adjoining each other
Merging obtains merging face.Then, being filtered out according to the corresponding area value in each merging face needs merging face to be shown, is for
One merging face determines when the area value for merging face is higher than threshold value and shows the merging face；When the area value for merging face is less than threshold
When value, ignores and show the merging face.
Under the scene that the merging face of some different sides types mutually includes, for example, in lake include an island when, by
Area value in the corresponding merging face in lake is bigger, may be only aobvious when the area value of the corresponding background surfaces in island is smaller
Show the corresponding merging face in lake, and ignore the corresponding background surfaces in display island, the effective information for causing electronic map to show occurs
Missing.
Summary of the invention
In order to solve may to ignore under the scene that the merging face of some different sides types mutually includes in the related technology
The technical issues of smaller merging face of display surface product value, the effective information for causing electronic map to show lacks, the present invention
Embodiment provides a kind of display method for electronic map and device.The technical solution is as follows:
It include multiple in the map file of the electronic map in a first aspect, providing a kind of display method for electronic map
Background surfaces, each background surfaces have corresponding noodles type, which comprises
Multiple background surfaces are subjected to the first merging treatment and obtain at least two merging faces, each merging face includes
Belong to identical faces type and with syntople multiple background surfaces or the merging face include an independent background surfaces；
At least two merging face is subjected to the second merging treatment and obtains at least one super face, each super face
Including belonging to different sides type and at least two merging faces of inclusion relation；
Display includes the map user interface in the super face, is shown on the super face simultaneously and described belongs to different sides
Type and at least two merging faces with inclusion relation.
Second aspect, provides a kind of map display, including electronic map, and the electronic map includes multiple backgrounds
Face, each background surfaces have corresponding noodles type, and described device includes:
First merging module obtains at least two merging faces for multiple background surfaces to be carried out the first merging treatment,
Each merging face includes belonging to identical faces type and multiple background surfaces with syntople or the merging face including only
A vertical background surfaces；
Second merging module, it is super for at least two merging face the second merging treatment of progress to be obtained at least one
Face, each super face include belonging to different sides type and at least two merging faces with inclusion relation；
Display module is shown on the super face simultaneously for showing the map user interface including the super face
It is described to belong to different sides type and at least two merging faces with inclusion relation.
The third aspect provides a kind of computer readable storage medium, at least one finger is stored in the storage medium
It enables, described instruction is loaded by processor and executed to realize the first possible embodiment such as first aspect, first aspect
Or display method for electronic map described in second of possible embodiment of first aspect.
Fourth aspect provides a kind of server, and the server includes processor and memory, deposits in the memory
Contain at least one instruction, at least a Duan Chengxu, code set or instruction set, at least one instruction, an at least Duan Cheng
Sequence, the code set or instruction set are loaded by the processor and are executed to realize that electronic map as described in relation to the first aspect is shown
Method.
Technical solution provided in an embodiment of the present invention has the benefit that
By by different type and merging face with inclusion relation merge after show solve in the related technology only by phase
Same type and background surfaces with syntople merge into merging face show caused by the effective information that show of electronic map lack
The problem of, merging face that not only can be big with display area can also show to include that area in large area merging face is small
Merging face increases the display of effective information, more completely shows electronic map information, reduces map user and is inquiring
Due to the phenomenon that can not inquiring the lesser merging face of area and generating erroneous judgement when map.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is the data structure diagram of electronic map provided by one embodiment of the present invention；
Fig. 2 is the method flow diagram of display method for electronic map provided by one embodiment of the present invention；
Fig. 3 is the method flow diagram for the display method for electronic map that another embodiment of the present invention provides；
Fig. 4 A is corresponding coordinate before the corresponding background surfaces in super face vacuate；
Fig. 4 B is corresponding coordinate after the corresponding background surfaces in super face vacuate；
Fig. 5 is the device block diagram of electronic map display equipment provided by one embodiment of the present invention；
Fig. 6 is the structural block diagram of server provided by one embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Referring to FIG. 1, this is electronically it illustrates the data structure diagram of electronic map provided by one embodiment of the present invention
The data structure that the corresponding electronic map of the data structure diagram of figure is shown under a scale bar.As shown, this is electronically
The data structure of figure includes: background surfaces A, background surfaces B, background surfaces C, background surfaces D, background surfaces E, background surfaces F and background surfaces G structure
At one group of face data of the electronic map；Contour line 101, contour line 102, contour line 103, contour line 104, contour line 105, wheel
Profile 106, cut-off rule 107, cut-off rule 108, map sheet line 109, contour line 110, contour line 111 and contour line 112 constitute electricity
One group of line number evidence of sub- map.Wherein, background surfaces are the basic face datas of electronic map, are vector face data, electronic map
It is shown after finally display is the result is that render background surfaces.
Wherein, a map after three adjacent background surfaces A, B, C merge into a merging face, in corresponding electronic map
Element lake 10；Background surfaces D corresponds to the map element island 14 in electronic map；Background surfaces E corresponds to the map in electronic map
Element greenery patches 11；Background surfaces F corresponds to the map element greenery patches 12 in electronic map；Background surfaces F corresponds to the map in electronic map
Element river 13.
Wherein, contour line is intended to indicate that the line of the region outline of map element, such as contour line 101,102,103,104
The profile in lake 10 is constituted, the line for constituting the region outline of map element is known as contour line.And for a background surfaces,
One background surfaces is made of background facial contour contour line, cut-off rule and map sheet line at least one, constitutes the line of background facial contour
Referred to as sideline.For example, as shown in Figure 1, the sideline of background surfaces A includes contour line 101, cut-off rule 107, contour line 106, cut-off rule
108；The sideline of background surfaces B includes contour line 102, map sheet line 109, contour line 104, cut-off rule 108, contour line 105, cut-off rule
107；The sideline of background surfaces C includes contour line 103, map sheet line 109；The sideline of background surfaces D is contour line 105, contour line 106；
The sideline of background surfaces E is contour line 110；The sideline of background surfaces F is contour line 111；The sideline of background surfaces G is contour line 112.No
It being difficult to see, contour line 106 is background surfaces A and background surfaces D shared, and contour line 105 is background surfaces D and background surfaces B shared, this
The shared contour line of kind is referred to as shared contour line；Cut-off rule 106,107 is background surfaces A and background surfaces B shared, map sheet line
109 be background surfaces B and background surfaces C shared.
In general, needing for electronic map to be split as multiple map sheets, Mei Getu for the ease of the storage and maintenance of electronic map
The sideline of width is map sheet line.Due to will appear a case where map element includes other map elements, example in electronic map
As shown in Figure 1, including island 14 in lake 10, for the ease of storage and later rendering background surfaces, lake 10 is artificially set
The cut-off rule 107,108 set is divided.
Referring to FIG. 2, it illustrates the method flow diagrams of display method for electronic map provided by one embodiment of the present invention.
For the present embodiment by taking the display method for electronic map is in computer equipment as an example, which can be server or a
People's computer or other kinds of computer equipment, this method comprises:
In step 201, multiple background surfaces are carried out the first merging treatment and obtain at least two merging faces by computer equipment,
Each merging face includes belonging to identical faces type and multiple background surfaces with syntople, or merging face includes independent one
Background surfaces.
In electronic map, map element can be indicated with a background surfaces, for example, as shown in Figure 1, island 14 are with one
Background surfaces D is indicated；Map element can also be indicated with the merging face that multiple background surfaces are constituted, for example, lake 10 is with three
Merging face that adjacent background surfaces A, B, C is constituted indicates.
Before showing electronic map, need first to confirm show which map element, map element include lake, river,
Greenery patches, point of interest (Point of Interest, POI) or Road etc..Wherein, the map elements pair such as lake, river, greenery patches
Answer a background surfaces or multiple background surfaces, thus in confirmation display these correspond to one or more background surfaces map element it
Before, multiple background surfaces corresponding to this kind of map element merge, merge into merging face.To multiple background surfaces merge according to
According to being, multiple background surfaces types are identical and have syntople.Each background surfaces have noodles type, and noodles type corresponds to background surfaces
The geographical classification of corresponding map element.For example, as shown in Figure 1, the noodles type of background surfaces A, B, C are water system, the class of background surfaces D
Type is island, and the noodles type of background surfaces E, F is greenery patches, and the noodles type of background surfaces G is river.
Relationship between background surfaces can be determined by following manner.
First way is the face corresponding relationship being stored in advance between background surfaces in electronic map, for example, as shown in Figure 1,
It is syntople between background surfaces A and background surfaces B, is syntople, background surfaces A and background surfaces between background surfaces B and background surfaces C
It is syntople between D, is syntople between background surfaces D and background surfaces B.
The second way be the corresponding relationship in background surfaces and sideline is stored in advance in electronic map, for example, as shown in Figure 1,
The corresponding sideline background surfaces A is contour line 101, cut-off rule 107, contour line 106, cut-off rule 108；The corresponding sideline background surfaces B
For contour line 102, map sheet line 109, contour line 104, cut-off rule 108, contour line 105, cut-off rule 107.It is corresponding by background surfaces A
Sideline and the corresponding sideline background surfaces B, can inquire has shared cut-off rule between background surfaces A and background surfaces B
107,108, will there are the background surfaces of shared cut-off rule to be determined as the background surfaces with syntople.
After syntople between the noodles type and background surfaces for obtaining background surfaces, it can will belong to identical faces type
And multiple background surfaces with syntople carry out the first merging treatment and merge into merging face.
Individual background surfaces without syntople also constitute a merging face, for example, background surfaces D as shown in Figure 1,
A merging face is constituted, indicates a map element island 14.
In step 202, at least two merging faces are carried out the second merging treatment and obtain at least one and surpass by computer equipment
Grade face, each super face include belonging to different sides type and at least two merging faces with inclusion relation.
As shown in Figure 1, including island 14 in lake 10, in map denotation, in order to which lake 10 and island 14 is jointly aobvious
Show, need to carry out the second merging treatment, by the merging face of different sides type, and at least two with inclusion relation merge face and close
And be a super face, such as lake 10 and island 14, water system and the two types of island are respectively corresponded, and island 14 are included in
In lake 10, a super face can be merged into.
In the first merging treatment, noodles type identical background surfaces A, B, C are merged into the first merging face, therefore first closes
And the corresponding noodles type in face is the corresponding noodles type of background surfaces A, B, C, i.e. water system.Background surfaces D is separately formed the second merging face,
Its corresponding noodles type is the noodles type of background surfaces D, i.e. island.
Relationship between merging face can be determined by following manner.
According to the corresponding pass between the available merging face of face corresponding relationship between the background surfaces prestored in electronic map
System.Such as background surfaces A and background surfaces D has syntople, background surfaces D and background surfaces B have syntople, and first merges face
Corresponding background surfaces A and background surfaces B, the second merging face correspond to background surfaces D, therefore, different type can be merged to the corresponding back in face
Merging face in scape face with syntople determines there is inclusion relation, for example, first merges face and the second merging face with packet
Containing relationship.
According to pair between the available merging face of corresponding relationship between the background surfaces and sideline prestored in electronic map
It should be related to.For example, having shared contour line 106 between background surfaces A and background surfaces D, have between background surfaces D and background surfaces B
Therefore different type can be merged the merging face in the corresponding background surfaces in face with shared contour line by shared contour line 105
Determine that there is inclusion relation, for example, first merges face and the second merging face with inclusion relation.
After inclusion relation between the type in the merging face of obtaining and merging face, can will belong to different sides type and
At least two merging faces with inclusion relation carry out the second merging treatment and merge into a super face.The super face corresponds to electronics
With the map element of inclusion relation in map.
In step 203, computer equipment shows the map user interface including super face, shows simultaneously on the super face
Have and belongs to different sides type and at least two merging faces with inclusion relation.
After the second merging treatment obtains super face, computer equipment obtains the corresponding background surfaces in super face, will determine
The information back of display renders the corresponding background surfaces in super face, which can be Fill Color, filling to background surfaces file
Texture increases shade, increases illumination, showing that the modes such as sideline show the corresponding back in super face in the user interface of electronic map
The display to super face can be completed in scape face.
In conclusion in the embodiment of the present invention, by by different type and merging face with inclusion relation merge after show
Show, solve in the related technology only by same type and with syntople background surfaces merge into merging face display caused by electricity
The problem of effective information missing of sub- map denotation, merging face that not only can be big with display area can also show and be included in
The merging face of relatively small area in larger area merging face, increases the display of effective information, more completely shows electronically
Figure information reduces map user and generates erroneous judgement due to that can not inquire the merging face compared with small area when inquiring map
Phenomenon.
In general, when showing map, it may appear that background surfaces and text information are asynchronous, ignore display river, background surfaces are filled out
Technical problems such as " gaps " are filled, in view of the above technical problems, another embodiment of the present invention provides a kind of electronic map and shows
Method, this method are advanced optimizing of making on the basis of display method for electronic map shown in Fig. 2.
Referring to FIG. 3, the method flow of the display method for electronic map provided it illustrates another embodiment of the present invention
Figure.For the present embodiment by taking the display method for electronic map is in computer equipment as an example, which can be server
Or personal computer or other kinds of computer equipment, this method comprises:
In step 301, multiple background surfaces are carried out the first merging treatment and obtain at least two merging faces by computer equipment,
Each merging face includes belonging to identical faces type and multiple background surfaces with syntople, or merging face includes independent one
Background surfaces.
In electronic map, background surfaces file is contained, sideline file, face correspond to relational file and face-line corresponding relationship
File.In an alternative embodiment, background surfaces file, sideline file, face correspond to relational file, face-line corresponding relationship text
Part is the desktop GIS software data of U.S. MapInfo company, wherein graph data (such as the vector of background surfaces
Face data, the line of vector data in sideline) it is stored in MIF formatted file, and text data (such as face number and the face of background surfaces
Type, the wire size code in sideline and line type, face corresponding relationship, face-line corresponding relationship) it is stored in MID formatted file.
Each background surfaces file has face number and noodles type the two information.Wherein, face number is to establish electronically
The unique number defined when chart database, noodles type are the face attribute informations of background surfaces, and which represent the background surfaces correspondingly
The geographical pattern of pel element, for example, as shown in Table 1, the face number of background surfaces A is A, background surfaces A is a background in lake 10
Face, then the noodles type of background surfaces A is water system.
Table one
Each edge line file has wire line number, line type and coordinate points these three information.Wherein, wire size code is to establish electricity
The unique number defined when sub- map data base, line type are the corresponding physical types in sideline, can be and constitute merging face region
The contour line of profile can be the map sheet line of segmentation map, be also possible to divide the cut-off rule in merging face, each edge line is by several
A point is constituted, and the coordinate for constituting the point in sideline is the coordinate points in the sideline.For example, as shown in Table 2, the wire size code in sideline 101
It is 101, line type is contour line, and coordinate points are (10, -15), (20, -5) ....
Table two
It is the corresponding relationship between background surfaces that face, which corresponds to relational file, and face corresponds in relational file comprising face number, group number
Code and noodles type these three information.For example, table three is that face corresponds to relational file, as shown in Table 1, with syntople
Background surfaces A, B, C, D correspond to identical group number 1, and background surfaces E, F, G without syntople have different group numbers, respectively
2,3,4, the noodles type of background surfaces A, B, C, D are water system, and the noodles type of background surfaces E, F is greenery patches, and the noodles type of background surfaces G is river
Stream.
Table three
| Face number | Sets of numbers | Noodles type |
| A | 1 | Water system |
| B | 1 | Water system |
| C | 1 | Water system |
| D | 1 | Island |
| E | 2 | Greenery patches |
| F | 3 | Greenery patches |
| G | 4 | River |
Face-line corresponding relationship file is the corresponding relationship in each background surfaces and its sideline, is wrapped in face-line corresponding relationship file
Number containing face, wire size code and corresponding surface-line are related to these three information.For example, if table four is face-line corresponding relationship file,
As shown in Table 4, the corresponding sideline background surfaces A is 101,107,106,108.
Table four
| Face number | Wire size code |
| A | 101,107,106,108 |
| B | 102,109,104,108,105,107 |
| C | 103,109 |
| D | 106,105 |
| E | 110 |
| F | 111 |
| G | 112 |
In an alternative embodiment, computer equipment is corresponded in relational file in face by the face number of background surfaces and is looked into
The corresponding relationship obtained between background surfaces is ask, the noodles type of background surfaces is obtained by the face number of background surfaces, identical faces will be belonged to
Type and with syntople multiple background surfaces carry out the first merging treatment obtain at least two merging faces.
In an alternative embodiment, computer equipment is by the face number of background surfaces in face-line corresponding relationship file
Middle inquiry obtains the corresponding sideline of background surfaces and the wire size code in the sideline, and the line class in sideline is obtained according to the wire size code in sideline
Type obtains the noodles type of background surfaces by the face number of background surfaces, and the background surfaces with shared cut-off rule are determined as having neighbour
Connect the background surfaces of relationship.
For example, inquiring its corresponding sideline number in table four according to the number A of background surfaces A is 101,107,106,108,
The line type that can get sideline 101,107,106,108 according to sideline file, inquires according to the number B of background surfaces B in table four
Its corresponding sideline number is 107,102,109,104,108,105, according to sideline file can get sideline 107,102,109,
104,108,105 line type, therefore background surfaces A and background surfaces B can be obtained there is shared sideline 107,108, and sideline
107,108 corresponding line types are cut-off rule, thus may determine that background surfaces A and background surfaces B has syntople.Meanwhile root
Can get the noodles type of background surfaces A and background surfaces B according to the face Number Files of background surfaces is all water system, therefore can will be belonged to identical
The background surfaces A and background surfaces B of noodles type merge, and similarly, background surfaces B and background surfaces C are merged, background surfaces A, B, C merge into one
A merging face merges face for first.
It should be noted that individually background surfaces also may be constructed a merging face, for example, as shown in Figure 1, background surfaces D, E,
F, G also constitutes merging face independent.
In step 302a, computer equipment obtains at least two and merges the corresponding contour line in face, which is
For indicating the line of the region outline in merging face.
Computer equipment passes through the face number of the corresponding background surfaces in merging face, according to face-line corresponding relationship file, obtains every
The wire size code and type in the corresponding sideline in a merging face obtain the part that its middle line type is contour line according to line, obtain every
The corresponding contour line number in a merging face.
For example, second merges bread D containing background surfaces, background surfaces as shown in Figure 1, first merges bread A containing background surfaces, B, C
The corresponding sideline A is 101,107,106,108, and the corresponding sideline background surfaces B is 102,109,104,108,105,107, background
The corresponding sideline face C is 103,109, wherein the line type in sideline 102,103,104,105,106 is contour line, then obtains the
One to merge the corresponding contour line in face be 102,103,104,105,106, similarly, second merge the corresponding contour line in face be 105,
106, therefore available first merging face and second merges in face of that should have shared contour line 105,106.
In step 303a, super face is merged into the merging face with common contour line by computer equipment.
After obtaining the corresponding contour line number in each merging face, it will be closed with the merging face of common contour line by second
And it handles and merges into super face.For example, the corresponding background surfaces in the first merging face are A, B, C, second merges the corresponding background surfaces in face
For D, background surfaces A, B, C known to inquiry table four and background surfaces D have a common sideline 105 and 106, and 105 and 106 line type
For contour line, therefore, first, which merges face and second, merges face with common contour line 105 and 106, therefore first can be closed
And a super face is merged into face and the second merging face.
In step 302b, computer equipment obtains the face adjacency information of the background surfaces at least two merging faces, the face
Syntople is used to indicate the syntople between background surfaces and other background surfaces.
Server passes through the face number of the corresponding background surfaces in merging face, corresponds to relational file according to face, obtains each merging
The face adjacency information of corresponding background surfaces in face, the face syntople are used to indicate the adjoining between background surfaces and other background surfaces
Relationship.
For example, as shown in Figure 1, first merges bread A containing background surfaces, B, C, the second merging bread D containing background surfaces, according to looking into
Ask table three, it is known that, the corresponding group number of background surfaces A, B, C is 1, and the corresponding group number of background surfaces D is also 1, thus may determine that background
Face A, B, C and background surfaces D have syntople, so that it is determined that first merges face and the second merging face with face syntople.
In step 302c, computer equipment determines the conjunction with syntople according to the face syntople of background surfaces
And face.
Computer equipment obtains the face adjacency information of the background surfaces at least two merging faces by step 302b, determines
Merging face with face syntople.
In step 303b, computer equipment will merge into super face with the merging face of syntople.
Computer equipment will merge into super face by the second merging treatment with the merging face of syntople.
It should be noted that step 302a to step 303a and step 302b, step 302c can be to step 303b
Successively series connection executes, and can also only carry out 302a to step 303a or only carry out step 302b, step 302c to step 303b.
In step 304, computer equipment is inquired in the first corresponding relationship super according to the corresponding background surfaces in super face
The corresponding text information in face, the first corresponding relationship are the corresponding relationship of background surfaces and text information, and text information is background surfaces
Geographic name.
In electronic map, map element has its geographic name, for example, as shown in Figure 1, lake 10 is corresponding according to its
Actual geographic title is called " lake X ", and similarly, island 14 are called on " island Y ", and greenery patches 11 is called in " park Z ", these map elements are corresponding
Title forms text information data.
The display of the display and background surfaces that are typically due to text information is not uniformly controlled, it is possible that display background
When face, the nonsynchronous problem of text information.For example, as shown in Figure 1, can be according to the face for merging face before the merging face of display
Product screening shows that the area very little for merging the corresponding background surfaces D in face due to second will not be shown, but since background surfaces are shown
It is not uniformly controlled with word-information display, therefore when no display second merges face, second merges the ground of face position
Reason title " island Y " is but shown, due to showing " island Y ", but without showing " island Y " corresponding background surfaces, therefore this display
Situation is very lofty, brings puzzlement using map inquiry for user.
In order to solve this technical problem, in an alternative embodiment, electronic map establishes background surfaces and text
First corresponding relationship of information, the first corresponding relationship include the face number and the corresponding text information of background surfaces of background surfaces, will
Background surfaces and word-information display are uniformly controlled.For example, as shown in Table 5, it illustrates first pair of background surfaces and text information
It should be related to, it includes the corresponding text information of face number A and background surfaces A " lake X " of background surfaces A, the face numbers of background surfaces E
And the list items such as the corresponding text information of background surfaces E " park Z " E,.Since text information is the actual geographic of a map element
Title, and what lake 10 was made of background surfaces A, B, C merging, therefore only need at least one background surfaces of background surfaces A, B, C
The text information in corresponding lake 10, the corresponding text information of background surfaces for not corresponding to text information is N/A (Not
Applicable)。
Table five
| Face number | Text information |
| A | The lake X |
| B | N/A |
| C | N/A |
| D | The island Y |
| E | The park Z |
| F | V forest |
| G | The river W |
Computer equipment inquires super face according to the face number of the corresponding background surfaces in super face in the first corresponding relationship
The corresponding text information of the background surfaces answered.For example, as shown in Figure 1, first merges in the super face that face and the second merging face merge
Corresponding text information is " lake X " and " island Y ".
In step 305, computer equipment determines that the corresponding weighted value in each super face, weighted value use the face in super face
Product, any one of perimeter and area perimeter than in are indicated.
Generally for multiple merging faces, need to do multiple merging faces screening display, the condition of screening is merging face
Area.The threshold value of an area can be arranged in computer equipment, and when merging face greater than this threshold value, which is used as to aobvious
The merging face display shown, but if merging face is area very little, but when the very long river of perimeter.It, may due to area very little
Area threshold can be less than, therefore the merging face of the river type can ignore display under some scale bars in electronic map.
When electronic map has multiple super faces, need to do multiple super faces screening display, the condition of screening is
Super face weighted value, the weighted value can be any one of the area, perimeter or area perimeter in super face than in.Namely it uses
Any one in following three kinds of modes is realized:
First, by the face number of the corresponding background surfaces in super face, inquiry is obtained super in face-line corresponding relationship file
The corresponding sideline of each background surfaces in the super face of coordinate points in face obtains the corresponding seat in each background surfaces sideline according to sideline file
Punctuate；After the coordinate points for obtaining the corresponding sideline of each background surfaces in super face, each background surfaces in super face can be calculated
Area, the areas of the corresponding background surfaces in super face is added, the area in super face can be obtained.
Second, by the face number of the corresponding background surfaces in super face, inquiry is obtained super in face-line corresponding relationship file
Sideline common between background surfaces in each corresponding sideline of background surfaces and super face in face, for example, inquiry table four, according to
First merge face and second merge face merge the corresponding background surfaces in super face in be background surfaces A, B, C, D, obtain background surfaces A and
Background surfaces B common sideline is sideline 107,108, and the common sideline of background surfaces B and background surfaces C are 109, background surfaces A and back
The common sideline of scape face D is 106, and the common sideline of background surfaces B and background surfaces D are 105, therefore is calculating the super face week
When long, need to remove in common sideline 107,108,109,106,105, the sideline 101,102,103,104 that coordinate points obtain
The contour line in as super face is calculated by the coordinate points of the contour line in super face by the perimeter in super face.
After the area and perimeter that obtain super face, the area in super face can be obtained divided by the perimeter in super face for third
The area perimeter ratio in super face.
Within step 306, the super face that weighted value is higher than threshold value is determined as the super face of the first kind to be shown, by weight
Value is determined as ignoring the super face of the second class of display lower than the super face of threshold value.The threshold of weighted value is preset in computer equipment
Value, the threshold value can be an area value, perimeter value or area perimeter ratio.
The super face that weighted value is higher than threshold value is determined as the super face of the first kind to be shown, by weight value lower than threshold value
Super face is determined as ignoring the super face of the second class of display.
It should be noted that being directed to different scale bar levels, there is different weighted values.Computer equipment has determined often
Behind the super face of the corresponding first kind of one scale bar level and/or the super face of the second class, that is, establish each scale bar level
With the corresponding relationship in the super face of the first kind and/or the super face of the second class, that is, each scale bar level and need to show under the level
The super relation of plane shown or ignored has predetermined that.When user accesses electronic map, do not need to open a ratio every time
Example ruler level re-executes above-mentioned steps and determines the super face of the first kind and/or the super face of the second class, it is only necessary to according to each ratio
The super face of the ruler level first kind corresponding with the level and/or the super face corresponding relationship of the second class, that is, can determine display.
In step 307, the sideline of the corresponding background surfaces in the super face of the first kind is obtained, sideline is for constituting background surfaces
The line of profile, sideline include non-shared sideline and shared sideline.
According to the corresponding background surfaces number in the super face of the first kind, it is super that the first kind is obtained in face-line corresponding relationship file
The wire size code and coordinate points in the corresponding sideline in face, the sideline are non-shared sideline and shared sideline.For example, as shown in Figure 1, sideline
101 correspondences, one background surfaces A, then sideline 101 is non-shared sideline, and sideline 107 corresponds to background surfaces A and background surfaces B, then sideline
107 be shared sideline.Merge face and second first to merge in the super face that face merges, sideline 101,102,103,104 is non-
Shared sideline, sideline 105,106,107,108 are shared sideline.
In an alternative embodiment, a document retaining can be individually established into the sideline of the multiple background surfaces of correspondence,
This document contains wire size code, line type and the line coordinates in all shared sidelines.
In step 308, the sideline after being vacuated to the non-shared sideline in sideline, wherein according to vacuating
The coordinate points in evacuating algorithm reduction sideline.
In general, in order to reduce operational data, while guaranteeing that background facial contour is shown smoothly, it can be to merging sideline corresponding to face
It is vacuated, vacuating is the computer equipment sideline reduction coordinate points corresponding to merging face according to preset evacuating algorithm.Due to
Vacuating is to vacuate to all types of sidelines, and the display of electronic map is as unit of background surfaces, therefore it is corresponding to merge face
Background surfaces in, with syntople background surfaces common to contour line, cut-off rule and/or map sheet line after vacuating to background
When the rendering display of face, when computer equipment renders background surfaces, shared line can be identified because corresponding coordinate of line is reduced
It is two, to generate " gap " phenomenon.
As shown in Figure 4 A, it illustrates to the first merging face vacuate before the corresponding sideline of each of which background surfaces coordinate points,
As shown in Figure 4 B, it illustrates the coordinate points that the first merging face vacuates the rear corresponding sideline of each of which background surfaces.As shown, right
After the corresponding background surfaces in first merging face vacuate, since the side coordinate points for corresponding to multiple background surfaces being vacuated, such as sideline 108,
When rendering to background surfaces, since 108 coordinate points of sideline are reduced, computer equipment can not can correctly determine sideline 108, thus will
Sideline 108 judges into sideline 108a and 108b, thus when to 108 corresponding background surfaces A and background surfaces B rendering, in sideline 108
There is gap 401 and 402, gap 403,404,405 is similarly since 108 mistake of sideline is identified as 108a and 108b in place.
Computer equipment vacuates the corresponding non-shared sideline in the super face of the first kind, the sideline after being vacuated.This implementation
In example, computer equipment is vacuated according to coordinate points of the evacuating algorithm to non-shared sideline, reduces the coordinate points in non-shared sideline
Number retains the coordinate points that sideline is shared in the corresponding sideline in the super face of the first kind.
In a step 309, to the corresponding background surfaces in the sideline rendering display super face of the first kind and the first kind after vacuating
The corresponding text information in super face.
Computer equipment vacuated after sideline, i.e., the corresponding background surfaces in the acquisition super face of the first kind vacuate after sideline
Afterwards, each background surfaces are rendered, render process can be the modes such as Fill Color, filling texture, increase shade, increase illumination and exist
The corresponding background surfaces in the super face of the first kind are shown in the user interface of electronic map, meanwhile, it is corresponding according to the super face of the first kind
The corresponding relationship of background surfaces and text information shows the corresponding text letter in the super face of the first kind in the user interface of electronic map
Breath, can be completed the display to the super face of the first kind.
For example, as shown in Figure 1, display first, which merges face and second, merges the super face in face, i.e., after display is vacuated, rendered
Background surfaces A, background surfaces B, background surfaces C, background surfaces D and the corresponding text information of background surfaces A " lake X ", background surfaces D is corresponding
Text information " island Y ".
In conclusion in the embodiment of the present invention, by by different type and merging face with inclusion relation merge after show
Show, solve in the related technology only by same type and with syntople background surfaces merge into merging face display caused by electricity
The problem of effective information missing of sub- map denotation, merging face that not only can be big with display area can also show and be included in
The merging face of relatively small area in larger area merging face, increases the display of effective information, more completely shows electronically
Figure information reduces map user and generates erroneous judgement due to that can not inquire the merging face compared with small area when inquiring map
Phenomenon.
Further, in the embodiment of the present invention, by the way that the first corresponding relationship of background surfaces and text information is arranged, in determination
The background surfaces corresponding text information will necessarily be shown when display background face, solve the aobvious of text information and background surfaces
Show it is not display background face when showing text information caused by same control in some cases, background surfaces and text information
It shows nonsynchronous problem, keeps the display of electronic map more complete and smooth.
Further, in the embodiment of the present invention, by the weighted value for showing perimeter or area perimeter than being set as super face,
It solves since only using area as screening display condition, the perimeter in super face is very long in some cases but area very little is neglected
The problem of showing is shown slightly, keeps the display of electronic map more complete.
Further, in the embodiment of the present invention, during being vacuated to background surfaces sideline, by retaining the corresponding side of background surfaces
The coordinate points in the shared sideline in line solve and render what display background face generated after all vacuating to the corresponding sideline of background surfaces
" gap " phenomenon, so that the display of electronic map is more complete and beautiful.
Referring to FIG. 5, it illustrates the device block diagrams of electronic map display equipment provided by one embodiment of the present invention.It should
Device includes: the first merging module 501, the second merging module 502 and display module 503.
First merging module 501, for realizing the related merging implied in above-mentioned steps 201, step 301 and each step
Function.
Second merging module 502, for realizing above-mentioned steps 202, step 302a, 303a, step 302b, step 302c,
The related combined function of being implied in step 303b and each step.
Display module 503, for realizing above-mentioned steps 203, step 304, step 305, step 306, step 307, step
308, the function for the related display implied in step 309 and each step.
In conclusion by different type and there is packet by the second merging module and display module in the embodiment of the present invention
Merging face containing relationship shows after merging, and solves in the related technology only by same type and background surfaces with syntople are closed
And for merging face show caused by the effective information that show of electronic map lack the problem of, conjunction that not only can be big with display area
And face, can also show include relatively small area in larger area merging face merging face, increase the display of effective information,
It more completely shows electronic map information, reduces map user when inquiring map due to that can not inquire compared with small area
Merging face and the phenomenon that generate erroneous judgement.
Further, in the embodiment of the present invention, background surfaces and text information are uniformly controlled by display module, it is aobvious determining
The background surfaces corresponding text information will necessarily be shown by showing when background surfaces, solve the display of text information and background surfaces
It is not that display background face, background surfaces and text information be not aobvious when showing text information caused by same control in some cases
Show nonsynchronous problem, keeps the display of electronic map more complete and smooth.
Further, it in the embodiment of the present invention, is shown by display module using perimeter or area perimeter ratio as super face
Weighted value show super face, solve due to only using area as screening display condition, in some cases week in super face
Long very long but area very little is ignored the problem of showing, keeps the display of electronic map more complete.
Further, in the embodiment of the present invention, display module is during vacuating background surfaces sideline, by retaining background
The coordinate points in the shared sideline in the corresponding sideline in face solve rendering display back after all vacuating to the corresponding sideline of background surfaces
" gap " phenomenon that scape face generates, so that the display of electronic map is more complete and beautiful.
Fig. 6 is a kind of structural block diagram of server shown according to an exemplary embodiment, which includes: processor
61, memory 62 and network interface 63.
It will be understood by those skilled in the art that the structure of server shown in Fig. 6 does not constitute the restriction to server,
It may include perhaps combining certain components or different component layouts than illustrating more or fewer components.Wherein:
Bus of network interface 63 or other means is connected with processor 61, for receiving or sending by wired or wireless
The information of network transmission, such as receive the request for the display electronic map that terminal is sent or send display electronic map to terminal
Instruction.
The processor 61 can be central processing unit (English: central processing unit, CPU), network processes
The combination of device (English: network processor, NP) or CPU and NP.Processor 121 can further include hardware
Chip.Above-mentioned hardware chip can be specific integrated circuit (English: application-specific integrated
Circuit, ASIC), programmable logic device (English: programmable logic device, PLD) or combinations thereof.It is above-mentioned
PLD can be Complex Programmable Logic Devices (English: complex programmable logic device, CPLD), scene
Programmable gate array (English: field-programmable gate array, FPGA), Universal Array Logic (English:
Generic array logic, GAL) or any combination thereof.
The bus or other means of memory 62 is connected with processor 61, be stored in memory 62 at least one instruction,
At least a Duan Chengxu, code set or instruction set, it is above-mentioned at least one instruction, at least a Duan Chengxu, code set or instruction set by
Reason device 61 is loaded and is executed to realize the display method for electronic map such as Fig. 2 or Fig. 3.Memory 62 can be volatile memory
(English: volatile memory), nonvolatile memory (English: non-volatile memory) or their group
It closes.Volatile memory can be random access memory (English: random-access memory, RAM), for example, it is static with
Machine accesses memory (English: static random access memory, SRAM), dynamic random access memory (English:
Dynamic random access memory, DRAM).Nonvolatile memory can be read-only memory (English: read
Only memory image, ROM), such as programmable read only memory (English: programmable read only
Memory, PROM), Erasable Programmable Read Only Memory EPROM (English: erasable programmable read only
Memory, EPROM), electrically erasable programmable read-only memory (English: electrically erasable
Programmable read-only memory, EEPROM).Nonvolatile memory may be flash memory (English:
Flash memory), magnetic memory, for example (,) tape (English: magnetic tape), floppy disk (English: floppy disk), firmly
Disk.Nonvolatile memory may be CD.
It is a kind of computer-readable in the storage medium the embodiment of the invention also provides a kind of computer readable storage medium
Storage medium is stored at least one instruction, at least a Duan Chengxu, code set or instruction set in storage medium, and at least one refers to
It enables, an at least Duan Chengxu, code set or instruction set is loaded by processor and executed to realize as shown in Figure 2 or Figure 3 electronically
Figure display methods, optionally, the computer readable storage medium include high speed access storage, nonvolatile memory.
It should be understood that referenced herein " multiple " refer to two or more."and/or", description association
The incidence relation of object indicates may exist three kinds of relationships, for example, A and/or B, can indicate: individualism A exists simultaneously A
And B, individualism B these three situations.Character "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or".
The serial number of the above embodiments of the invention is only for description, does not represent the advantages or disadvantages of the embodiments.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (14)
1. a kind of display method for electronic map, which is characterized in that it include multiple background surfaces in the map file of the electronic map,
Each background surfaces have corresponding noodles type, which comprises
Multiple background surfaces are subjected to the first merging treatment and obtain at least two merging faces, each merging face includes belonging to
Identical faces type and with syntople multiple background surfaces or the merging face include an independent background surfaces；
At least two merging face is subjected to the second merging treatment and obtains at least one super face, each super face includes
Belong to different sides type and at least two merging faces with inclusion relation；
Display includes the map user interface in the super face, is shown on the super face simultaneously and described belongs to different sides type
And at least two with inclusion relation merge face.
2. the method according to claim 1, wherein described merge the second merging of face progress for described at least two
Processing obtains at least one super face, comprising:
The corresponding contour line at least two merging faces is obtained, the contour line is intended to indicate that the ground in the merging face
The line of domain profile；
To there is the merging face of the common contour line to merge into the super face.
3. the method according to claim 1, wherein described merge the second merging of face progress for described at least two
Processing obtains at least one super face, comprising:
The face adjacency information of the background surfaces in at least two merging face is obtained, the face syntople is for indicating the back
Syntople between scape face and other background surfaces；
According to the face syntople of the background surfaces, the merging face with syntople is determined；
The super face is merged into merging face with the syntople.
4. method according to any one of claims 1 to 3, which is characterized in that the display includes the map in the super face
User interface, comprising:
When the super face is at least two, determine that the corresponding weighted value in each super face, the weighted value use institute
Any one of the area, perimeter and area perimeter in super face than in is stated to be indicated；
The super face that the weighted value is higher than threshold value is determined as the super face of the first kind to be shown, the weight value is lower than institute
The super face for stating threshold value is determined as ignoring the super face of the second class of display；
Display includes the map user interface in the super face of the first kind.
5. method according to any one of claims 1 to 3, which is characterized in that the method also includes:
The sideline of the corresponding background surfaces in the super face is obtained, the sideline is the line for constituting the profile of the background surfaces,
The sideline includes non-shared sideline and shared sideline, and the non-shared sideline is the sideline of the only corresponding background surfaces,
The shared sideline is the sideline of corresponding at least two background surfaces；
Sideline after being vacuated to the non-shared sideline in the sideline, wherein it is described vacuate according to vacuate
Algorithm reduces the coordinate points in the sideline；
The corresponding background surfaces in the super face are shown to the sideline rendering after described vacuate.
6. scheme according to any one of claims 1 to 3, which is characterized in that the method also includes:
The corresponding text information in the super face, institute are inquired in the first corresponding relationship according to the corresponding background surfaces in the super face
The corresponding relationship that the first corresponding relationship is the background surfaces and the text information is stated, the text information is the background surfaces
Geographic name；
By the corresponding word-information display in the super face in the super face.
7. a kind of electronic map display equipment, which is characterized in that the map file of the electronic map includes multiple background surfaces, often
A background surfaces have corresponding noodles type, and described device includes:
First merging module obtains at least two merging faces for multiple background surfaces to be carried out the first merging treatment, each
The merging face include belong to identical faces type and with syntople multiple background surfaces or the merging face include independent
One background surfaces；
Second merging module obtains at least one super face for at least two merging face to be carried out the second merging treatment,
Each super face includes belonging to different sides type and at least two merging faces with inclusion relation；
Display module is shown described simultaneously for showing the map user interface including the super face on the super face
Belong to different sides type and at least two merging faces with inclusion relation.
8. device according to claim 7, which is characterized in that first merging module is also used to:
The corresponding contour line at least two merging faces is obtained, the contour line is intended to indicate that the ground in the merging face
The line of domain profile；
To there is the merging face of the common contour line to merge into the super face.
9. device according to claim 7, which is characterized in that first merging module is also used to:
The face adjacency information of the background surfaces in at least two merging face is obtained, the face syntople is for indicating the back
Syntople between scape face and other background surfaces；
According to the face syntople of the background surfaces, the merging face with syntople is determined；
The super face is merged into merging face with the syntople.
10. the device according to claim 7 to 9, which is characterized in that the display module is also used to:
When the super face is at least two, determine that the corresponding weighted value in each super face, the weighted value use institute
Any one of the area, perimeter and area perimeter in super face than in is stated to be indicated；
The super face that the weighted value is higher than threshold value is determined as the super face of the first kind to be shown, the weighted value is lower than institute
The super face for stating threshold value is determined as ignoring the super face of the second class of display；
Display includes the map user interface in the super face of the first kind.
11. the device according to claim 7 to 9, which is characterized in that the display module is also used to:
The sideline of the corresponding background surfaces in the super face is obtained, the sideline is the line for constituting the profile of the background surfaces,
The sideline includes non-shared sideline and shared sideline, and the non-shared sideline is the sideline of the only corresponding background surfaces,
The shared sideline is the sideline of corresponding at least two background surfaces；
Sideline after being vacuated to the non-shared sideline in the sideline, wherein it is described vacuate according to vacuate
Algorithm reduces the coordinate points in the sideline；
The corresponding background surfaces in the super face are shown to the sideline rendering after described vacuate.
12. the device according to claim 7 to 9, which is characterized in that the display module is also used to:
The corresponding text information in the super face, institute are inquired in the first corresponding relationship according to the corresponding background surfaces in the super face
The corresponding relationship that the first corresponding relationship is the background surfaces and the text information is stated, the text information is the background surfaces
Geographic name；
By the corresponding word-information display in the super face in the super face.
13. a kind of computer readable storage medium, which is characterized in that be stored at least one instruction, institute in the storage medium
Instruction is stated to be loaded by processor and executed to realize the display method for electronic map as described in claim 1 to 6 is any.
14. a kind of server, which is characterized in that the server includes processor and memory, is stored in the memory
At least one instruction, at least a Duan Chengxu, code set or instruction set, at least one instruction, an at least Duan Chengxu, institute
Code set or instruction set is stated to be loaded by the processor and executed to realize the electronic map as described in claim 1 to 6 is any
Display methods.
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