CN105069105B - Factor data display methods and system - Google Patents
Factor data display methods and system Download PDFInfo
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- CN105069105B CN105069105B CN201510484196.0A CN201510484196A CN105069105B CN 105069105 B CN105069105 B CN 105069105B CN 201510484196 A CN201510484196 A CN 201510484196A CN 105069105 B CN105069105 B CN 105069105B
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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 present invention relates to a kind of factor data display methods and systems, its method is comprising steps of after the element including sensitivity regions area that server receives client transmission shows solicited message, element screening, which is carried out, according to the sensitivity regions area obtains target face object element, the target face object element is returned into the client, carrying out target face object by client will show, relevant face object element client is all returned to without server to show, reduce the amount of communication data of client and Feature Service end, improve the display efficiency of factor data.
Description
Technical field
The present invention relates to Internet technical fields, more particularly to a kind of factor data display methods and system.
Background technique
With computer network, cloud computing and the fast development of big data storing technology, more and more application software
Store data in server, when client needs data, need to service data, last client to data into
Row processing, and be shown on client screen.
The basic function of GIS (Geographic Information System, GIS-Geographic Information System) client is from wanting
Plain server obtains geometric element, which includes line object, point object, in face of a variety of elements such as pictures, and in GIS client
End display.Under normal conditions, in order to reduce the transmission of data, GIS client will not disposably request all to Feature Service
Data, but according to current indication range and figure layer to be shown is needed to send request to Feature Service.For example, if current
The screen of GIS client shows the range of map: longitude is 120.1 to 120.3, and latitude is 30.2 to 30.2.When GIS client
When needing to show the road map data mining platform in the region, then asking for " obtaining the Road factor data within the scope of this " is sent to service
When asking, or needing to show the forest land map data mining platform of the range, then " obtain the forest land face within the scope of this to want to Feature Service transmission
The request of prime number evidence ".After Feature Service receives this kind of request, and the element in corresponding figure layer is retrieved, in the range
Element return to current GIS client.
It can be seen that traditional element display mode, reduces logical between GIS client and Feature Service device to a certain extent
Letter data amount only transmits the data in the finding region of GIS client.But since the data in visibility region might not
It is exactly visual data, the amount of communication data between GIS client and Feature Service device is often still larger, it is still desirable to occupy more
Network bandwidth resources, display efficiency is low.For example, user is China in the display area that GIS client is arranged, if to show
The forest land in the region is distributed, and needs institute's forest land face element into service request China, this quantity is extremely huge
's.
Summary of the invention
The purpose of the present invention is to provide a kind of factor data display methods and system, amount of communication data is reduced, and is improved
Display efficiency.
The purpose of the present invention is achieved through the following technical solutions:
A kind of factor data display methods, includes the following steps:
Element, which is sent, to server shows that solicited message, the element show that solicited message includes sensitivity regions area；
It receives the server and the target face object element that element screening returns is carried out according to the sensitivity regions area；
The target face object element is shown.
A kind of factor data display methods, includes the following steps:
It receives the element that client is sent and shows that solicited message, the element show that solicited message includes sensitivity regions face
Product；
Element screening, which is carried out, according to the sensitivity regions area obtains target face object element；
The target face object element is returned to the client to show.
A kind of factor data display system, including client, the client include:
Transmit-Receive Unit shows that solicited message, the element show that solicited message includes quick for sending element to server
Sensitivity region area receives the server according to the sensitivity regions area and carries out the target face object that element screening returns
Element；
Display unit, for being shown to the target face object element.
A kind of factor data display system, including server, the server include:
Receiving unit, the element for receiving client transmission show that solicited message, the element show request packet
Include sensitivity regions area；
Screening unit obtains target face object element for carrying out element screening according to the sensitivity regions area；
Transmission unit is shown for the target face object element to be returned to the client.
According to scheme present invention as described above, be server receive client transmission include sensitivity regions
After the element of area shows solicited message, element screening acquisition target face object is carried out according to the sensitivity regions area and is wanted
The target face object element is returned to the client by element, and carrying out target face object by client will show, due to basis
The sensitivity regions area has carried out element screening, and relevant face object element is all returned to client without server
It is shown, reduces the amount of communication data of client and Feature Service end, improve the display efficiency of factor data.
Detailed description of the invention
Fig. 1 is the flow diagram of factor data display methods embodiment one of the invention；
Fig. 2 is the flow diagram of factor data display methods embodiment two of the invention；
Fig. 3 is the flow diagram of factor data display methods embodiment three of the invention；
Fig. 4 is the structural schematic diagram of one embodiment of factor data display system of the invention；
Fig. 5 is the structural schematic diagram of another embodiment of factor data display system of the invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, with reference to the accompanying drawings and embodiments, to this
Invention is described in further detail.It should be appreciated that the specific embodiments described herein are only used to explain the present invention,
And the scope of protection of the present invention is not limited.
The present invention program mainly consider in the face object element of substantial amounts, may there are many face object element because
For area and its small, when showing on the display screen of GIS client, display effect will not be influenced ignoring.And it transmits
This kind of quantity is big, area is small and face object element that importance is little can make entire generalized information system degraded performance.For this
Problem, the mode that the present invention program is screened using opposite object element, to improve display efficiency.Below to the present invention
Scheme is described in detail.
Embodiment one
It is shown in Figure 1, it is the flow diagram of factor data display methods embodiment one of the invention.In the embodiment
It is to be illustrated by taking the treatment process of client as an example in one.
As shown in Figure 1, the treatment process of the client in the embodiment one includes:
Step S101: element is sent to server and shows that solicited message, the element show that solicited message includes susceptibility
Region area；
Here, sensitivity regions area can be system default setting, be also possible to what user was set as needed, this
Outside, sensitivity regions area can also dynamically be adjusted according to current indication range, for example, becoming larger in current indication range
When, sensitivity regions area also becomes larger therewith；
In user setting sensitivity regions when area, detailed process be may is that when detecting the information that mouse is pressed, inspection
Survey the movement (shifting of cursor on the screen of the corresponding cursor of the mouse on the screen while mouse keeps persistently being pressed
Dynamic triggered by user's control mouse is mobile), a sensitivity regions are drawn according to the moving distance of the cursor, and calculate quick
The area in sensitivity region；
The shape of the sensitivity regions can be set according to actual needs, for example, square, rectangle or circle etc.；
But the area of sensitivity regions for ease of calculation, sensitivity regions are preferably shaped to square or rectangle；
If sensitivity regions are square region, the moving distance of the cursor can be used as the side of the square area
It grows (but being also not necessarily limited to side length, such as can also be diagonal line), then the size of sensitivity regions are as follows: side length * side length, side length unit
For pixel, sensitivity regions area are as follows: (lateral resolution of side length * current map) * (longitudinal resolution of side length * current map
Rate), since resolution ratio describes the relationship of pixel and longitude and latitude, the square measure of sensitivity regions is longitude and latitude at this time
The quadratic power of degree can also carry out the conversion of square measure for vivider description area, by the list of sensitivity regions area
Position is converted to square metre by the quadratic power of longitude and latitude, and it will not be described here；
If sensitivity regions are rectangle, sensitivity regions area are as follows: (lateral resolution of lateral length * current map) *
(longitudinal resolution of longitudinal length * current map), wherein lateral length, longitudinal length correspond to the long side or short of rectangle
Side；
In user setting sensitivity regions when area, detailed process is also possible to: detecting the letter of contact on the touchscreen
Breath determines touch point, the movement of touch point while keeping the contact with touch screen is detected, according to the touch point
Moving distance draws a sensitivity regions, and calculates the area of sensitivity regions, which is pressed with detection mouse
Information when treatment process it is similar, it will not be described here；
Further, it is also possible to which the size of sensitivity regions is defaulted as 1 pixel *, 1 pixel size；
Step S102: the server is received according to the sensitivity regions area and carries out the target face that element screening returns
Object element；
Here, target face object element is that the server is carrying out filtering out the face for meeting screening conditions when element screening
Object element；
Element screening process is executed by server, server can precompute the area of face object element, will show
The area of the face object element of need figure layer to be shown in range is compared with the sensitivity regions area, to filter out
Meet the face object element of screening conditions, therefore, the target face object element can be by described in one of the embodiments,
The area of face object element is compared acquisition with the sensitivity regions area by server；
In addition, it is contemplated that the sensitivity regions area that user may be arranged sometimes is excessive, and the face of each face object element
Product is all smaller, thus can not filter out the face object element for meeting screening conditions, and in view of face object element may be connected, if
The gross area of the face object element of dry zonule is possible larger and meets screening conditions；
For this purpose, the target face object element may include isolated and area not less than institute in one of the embodiments,
State sensitivity regions area face object element, be connected and the gross area be not less than the sensitivity regions area at least two faces
Object element, that is to say, that, can also if its area is not less than the sensitivity regions area for isolated face object element
To be screened out and as target face object element；For connected face object element, if its gross area is not less than the sensitivity
Region area is spent, can also be screened out and as target face object element；
For the ease of quickly determine face object element be it is isolated be also connected to, can also be by the pre-recorded face of server
The connection relationship of object element, description connection relationship can for similar to { face id1, face id2 }, { face id3, face id10 },,
{ face idn } }, the face that representation id is 1 is connected with the face for being 2 id, and the face that id is 3 is connected with the face for being 10 id, and id is n's
Face is isolated；
The connected and gross area can also be not less than the sensitivity by the server in one of the embodiments,
The face object element for spending region area forms a new face object element, and by the connected and gross area not less than described quick
Sensitivity region area in face of being the new face object element as factor substitute, due to connected face object element quantity extremely
It is not less than two less, therefore, by the way of in the present embodiment, it is possible to reduce the quantity of the target face object element of return, and
The vertex quantity for constituting target face object element is reduced, for example, for two four side types, totally 8 vertex, if the two four sides
What type was connected to, less than or equal to 8 vertex can be used to describe；
In order to reduce the communication interaction number of client and server, can handle relevant all face object elements with
Afterwards, then by the target face object element filtered out client is uniformly returned to；
Step S103: the target face object element is shown.
It accordingly, is to send element to server to show solicited message according to the scheme in above-described embodiment one, it is described to want
Element display solicited message includes sensitivity regions area, receives the server according to the sensitivity regions area and carries out element
The target face object element returned is screened, the target face object element is shown, due to according to the sensitivity regions
Area has carried out element screening, and relevant face object element is all returned to client without server and is shown, reduces
The amount of communication data of client and Feature Service end, improves the display efficiency of factor data.
Embodiment two
It is shown in Figure 2, it is the flow diagram of factor data display methods embodiment two of the invention.In the embodiment
It is to be illustrated by taking the treatment process of server as an example in two.
As shown in Fig. 2, the treatment process of the client in the embodiment one includes:
Step S201: it receives the element that client is sent and shows that solicited message, the element show that solicited message includes quick
Sensitivity region area；
Step S202: element screening is carried out according to the sensitivity regions area and obtains target face object element；
It is described in one of the embodiments, that element screening acquisition target face pair is carried out according to the sensitivity regions area
As the step of element may include: to judge whether the area of face object element is less than the sensitivity regions area；If it is not, then will
The face object element is determined as the target face object element；It specifically, can be respectively by the corresponding figure layer in indication range
The area of each face object element is compared with the sensitivity regions area, to judge the area of corresponding face object element
Whether the sensitivity regions area is less than, if it is not, then by the face, object element is determined as the target face object element；
In order to avoid occur because the area of face object element is all smaller can not filter out meet screening conditions in face of as
It is the case where element, described in one of the embodiments, that element screening acquisition target is carried out according to the sensitivity regions area
The step of face object element may include: the associated relation of acquisition face object element；If getting orphan according to the associated relation
Vertical face object element, then judge whether the area of the isolated face object element is less than the sensitivity regions area, if it is not,
Isolated face object element is then determined as the target face object element；If getting connected face according to the associated relation
Object element, then judge whether the gross area of the connected face object element is less than the sensitivity regions area, if it is not, then will
The connected face object element is determined as the target face object element.
In order to reduce return target face object element quantity, in one of the embodiments, can also be by the phase
The face object element connected forms a new face object element, as the facing in face of what is be connected as described in factor substitute as wanting newly
Element；
Step S203: the target face object element is returned into the client and is shown.
It accordingly, is to receive the element that client is sent to show solicited message, institute according to the scheme in above-described embodiment two
It states element and shows that solicited message includes sensitivity regions area, element screening is carried out according to the sensitivity regions area and obtains mesh
The target face object element is returned to the client and shown, due to according to the susceptibility by mark face object element
Region area has carried out element screening, and relevant face object element is all returned to client without server and is shown,
The amount of communication data for reducing client and Feature Service end improves the display efficiency of factor data.
Other technical characteristics are identical with embodiment one in the present embodiment two, and it will not be described here.
Embodiment three
In conjunction with the scheme in above-described embodiment one, embodiment two, factor data display methods of the invention is shown in Fig. 3
The flow diagram of embodiment three.It in the present embodiment, is two-way between server and client when being shown with factor data
It is illustrated for interactive process, this explanation is not limited to constitute to the present invention program.
As shown in figure 3, the two-way interactive process between server and client in the embodiment three includes:
Step S301: user end to server sends element and shows that solicited message, the element show that solicited message includes
Sensitivity regions area；
Step S302: the server receives the element and shows solicited message；
Step S303: the server carries out element screening acquisition target face object according to the sensitivity regions area and wants
Element；
Step S304: the target face object element is returned to the client by the server；
Step S305: the client shows the target face object element.
Accordingly, according to the scheme in above-described embodiment three, be server receive client transmission include sensitivity
After spending the element display solicited message of region area, element screening is carried out according to the sensitivity regions area and obtains target face pair
As element, the target face object element is returned into the client, carrying out target face object by client will show, due to
Element screening has been carried out according to the sensitivity regions area, relevant face object element is all returned into visitor without server
Family end is shown, the amount of communication data of client and Feature Service end is reduced, and improves the display efficiency of factor data.
Specific example
Scheme to facilitate the understanding of the present invention, with a specific example, the present invention will be further described below,
It in the specific example, is illustrated by taking two-way interactive process when factor data is shown between server and client as an example,
And the server in this specific example is Feature Service device.Client in this specific example is GIS client, but these are not
It is limited to be constituted to the present invention program.
Firstly, current indication range is arranged, needs figure layer to be shown in client terminal start-up GIS client-side program；Prompt
User carries out sensitivity regions setting, and the size of sensitivity regions is defaulted as 1 pixel *, 1 pixel size, if user is without quick
The setting of sensitivity region, then system is using the sensitivity regions defaulted；If user is configured, detection user drags mouse and draws
A square area, then the size of sensitivity regions be (side length pixel * side length pixel) size；And in square area
Show the area in the region, the size of sensitivity regions area calculates as follows: (lateral resolution of side length * current map) (side *
The longitudinal resolution of long * current map), since resolution ratio is to describe the relationship of pixel and longitude and latitude, susceptibility area at this time
The square measure in domain is the quadratic power of longitude and latitude.For vivider description area, third party database can use sensitive
The square measure in degree region has switched to square metre, is not discussed in detail herein.
Indication range, need figure layer to be shown, sensitivity regions area are sent to Feature Service by GIS client, here
Indication range, to need figure layer to be shown, sensitivity regions area to be equivalent to so above-mentioned that want element display solicited message.
After Feature Service gets the request of GIS client transmission, the processing and screening of data are carried out, GIS is returned to
Meet the face object element of condition, specific process includes:
In order to reach higher processing speed, Feature Service needs to pre-process face object element, calculates each face
As the area of element；
In order to avoid there is the both less than default sensitizing range of the area of each face object element, but face object element may phase
Even, therefore the face object element of several zonules may constitute large area, thus Feature Service not only judge individually to face as
Whether element, which meets display, requires, but needs to carry out the judgement of the associated relation of face object element in advance, i.e. record needs aobvious
Which needs face object element to be shown to interconnect in the figure layer shown.The connected data structure of description is similar to
{ face id1, face id2 }, { face id3, face id10 },, { face idn } }, the face that representation id is 1 is connected with the face for being 2 id,
The face that id is 3 is connected with the face for being 10 id, and id is that the face of n is isolated；
According to above-mentioned pre-processing as a result, to indication range, the face object element in figure layer to be shown is needed to sieve
Choosing:
If a certain face object element is judged as isolated face object element, if the area of the isolated face object element
Less than sensitivity regions area, then the isolated face object element is not returned；Otherwise return to the isolated face object element；Due to
The face object element that isolate and area is less than susceptibility has been screened out, the communication number of GIS client and Feature Service is reduced
According to amount；
If certain face object elements are judged as connected face object element, these face object elements constitute face object element
Collection does not return to the face if the gross area for each face object element that the face object element is concentrated is less than sensitivity regions area
Each face object element that object element is concentrated；Otherwise the face of each face object element composition of face object element concentration is returned to, i.e.,
Do not return to each face object element that the face object element is concentrated, return to that this batch of face object element constitute it is new in face of as
Element can be reduced the vertex quantity for constituting target face object element in this way；
In addition, can handle whole in indication range to reduce the communication interaction number of GIS client and Feature Service
After all face object elements of a need figure layer to be shown, then uniformly send data to GIS client.
After GIS client receives the data of face object element, each face object element received is shown in
It shows on screen.Due to being screened according to sensitivity regions area opposite object element, the display methods ratio in the example
Traditional method possesses higher efficiency.
According to the factor data display methods in the embodiments of the present invention one, it is aobvious that the present invention also provides a kind of factor datas
Show system, just the embodiment of factor data display system of the invention is described in detail below.It is shown in Fig. 4 of the invention
The structural schematic diagram of the embodiment of factor data display system.For ease of description, it is merely illustrated in Fig. 4 related to the present invention
Part.
As shown in figure 4, factor data display system of the invention, including client 40, client 40 include Transmit-Receive Unit
401, display unit 402, in which:
Transmit-Receive Unit 401 shows that solicited message, the element show that solicited message includes for sending element to server
Sensitivity regions area receives the server according to the sensitivity regions area and carries out the target face pair that element screening returns
As element；
Display unit 402, for being shown to the target face object element.
Other technical characteristics are corresponding with embodiment one in the present embodiment, and it will not be described here.
According to the factor data display methods in the embodiments of the present invention two, it is aobvious that the present invention also provides a kind of factor datas
Show system, just the embodiment of factor data display system of the invention is described in detail below.It is shown in Fig. 5 of the invention
The structural schematic diagram of the embodiment of factor data display system.For ease of description, it is merely illustrated in Fig. 5 related to the present invention
Part.
As shown in figure 5, factor data display system of the invention, including server 50, server 50 include receiving unit
501, screening unit 502, transmission unit 503, in which:
Receiving unit 501, the element for receiving client transmission show that solicited message, the element show solicited message
Including sensitivity regions area；
Screening unit 502 obtains target face object element for carrying out element screening according to the sensitivity regions area；
Transmission unit 503 is shown for the target face object element to be returned to the client.
Other technical characteristics are corresponding with embodiment one in the present embodiment, and it will not be described here.
Factor data display system of the invention and factor data display methods of the invention correspond, in above-mentioned element
Technical characteristic and its advantages that the embodiment of data display method illustrates are suitable for the implementation of factor data display system
In example, hereby give notice that.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (7)
1. a kind of factor data display methods, which comprises the steps of:
Element, which is sent, to server shows that solicited message, the element show that solicited message includes sensitivity regions area；
It receives the server and the target face object element that element screening returns is carried out according to the sensitivity regions area；
The target face object element is shown；
The target face object element is carried out the area of face object element and the sensitivity regions area by the server
Compare acquisition；
The target face object element for receiving the server and carrying out element screening return according to the sensitivity regions area
The step of include:
The associated relation of acquisition face object element；
If getting isolated face object element according to the associated relation, judge that the area of the isolated face object element is
It is no to be less than the sensitivity regions area, if it is not, isolated face object element is then determined as the target face object element；
If getting connected face object element according to the associated relation, the gross area of the connected face object element is judged
Whether it is less than the sensitivity regions area, is wanted if it is not, the connected face object element is then determined as the target face object
Element.
2. factor data display methods according to claim 1, which is characterized in that the target face object element includes orphan
Vertical and area is not less than the sensitivity regions not less than face object element, the connected and gross area of the sensitivity regions area
The face object element of area.
3. factor data display methods according to claim 2, which is characterized in that by the server by it is described be connected and
The gross area forms a new face object element not less than the face object element of the sensitivity regions area, and is connected described
And the gross area faces to be the new face object element as factor substitute not less than the sensitivity regions area.
4. a kind of factor data display methods, which comprises the steps of:
It receives the element that client is sent and shows that solicited message, the element show that solicited message includes sensitivity regions area；
Element screening, which is carried out, according to the sensitivity regions area obtains target face object element；
The target face object element is returned to the client to show；
It is described according to the sensitivity regions area carry out element screening obtain target face object element the step of include:
Judge whether the area of face object element is less than the sensitivity regions area；
If it is not, then by the face, object element is determined as the target face object element；
It is described that the step of element screening obtains target face object element is carried out according to the sensitivity regions area further include:
The associated relation of acquisition face object element；
If getting isolated face object element according to the associated relation, judge that the area of the isolated face object element is
It is no to be less than the sensitivity regions area, if it is not, isolated face object element is then determined as the target face object element；
If getting connected face object element according to the associated relation, the gross area of the connected face object element is judged
Whether it is less than the sensitivity regions area, is wanted if it is not, the connected face object element is then determined as the target face object
Element.
5. factor data display methods according to claim 4, which is characterized in that further comprise the steps of:
The connected face object element is formed into a new face object element, the phase as described in factor substitute new is faced as this
Face object element even.
6. a kind of factor data display system, which is characterized in that including client, the client includes:
Transmit-Receive Unit shows that solicited message, the element show that solicited message includes susceptibility for sending element to server
Region area receives the server and is wanted according to the target face object that the sensitivity regions area carries out element screening return
Element；
Display unit, for being shown to the target face object element；
Acquiring unit, the target face object element is by the server by the area of face object element and the sensitivity regions
Area is compared acquisition；
The target face object element for receiving the server and carrying out element screening return according to the sensitivity regions area
The step of include:
The associated relation of acquisition face object element；
If getting isolated face object element according to the associated relation, judge that the area of the isolated face object element is
It is no to be less than the sensitivity regions area, if it is not, isolated face object element is then determined as the target face object element；
If getting connected face object element according to the associated relation, the gross area of the connected face object element is judged
Whether it is less than the sensitivity regions area, is wanted if it is not, the connected face object element is then determined as the target face object
Element.
7. a kind of factor data display system, which is characterized in that including server, the server includes:
Receiving unit, the element for receiving client transmission show that solicited message, the element show that solicited message includes quick
Sensitivity region area；
Screening unit obtains target face object element for carrying out element screening according to the sensitivity regions area；
Transmission unit is shown for the target face object element to be returned to the client；
Judging unit, described the step of carrying out element screening acquisition target face object element according to the sensitivity regions area, wrap
It includes:
Judge whether the area of face object element is less than the sensitivity regions area；
If it is not, then by the face, object element is determined as the target face object element；
It is described that the step of element screening obtains target face object element is carried out according to the sensitivity regions area further include:
The associated relation of acquisition face object element；
If getting isolated face object element according to the associated relation, judge that the area of the isolated face object element is
It is no to be less than the sensitivity regions area, if it is not, isolated face object element is then determined as the target face object element；
If getting connected face object element according to the associated relation, the gross area of the connected face object element is judged
Whether it is less than the sensitivity regions area, is wanted if it is not, the connected face object element is then determined as the target face object
Element.
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| CN103020250A (en) * | 2012-12-18 | 2013-04-03 | 广东威创视讯科技股份有限公司 | Map display method and device of geographic information system (GIS) |
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| CN101640000A (en) * | 2009-06-01 | 2010-02-03 | 北京四维图新科技股份有限公司 | Map display method, map display system, navigator and electronic map |
| CN102819671A (en) * | 2012-07-25 | 2012-12-12 | 深圳市网信联动技术有限公司 | Method for carrying out data analysis by combining map |
| CN103020250A (en) * | 2012-12-18 | 2013-04-03 | 广东威创视讯科技股份有限公司 | Map display method and device of geographic information system (GIS) |
| CN104142153A (en) * | 2013-05-07 | 2014-11-12 | 北京四维图新科技股份有限公司 | Electronic map display method, display device and navigation terminal |
| CN104090927A (en) * | 2014-06-20 | 2014-10-08 | 北京奇虎科技有限公司 | Lineation searching method and device based on electronic map |
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