CN101908060B - Manufacturing method, display method and system of vector numerical map - Google Patents

Manufacturing method, display method and system of vector numerical map Download PDF

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Publication number
CN101908060B
CN101908060B CN2010102149563A CN201010214956A CN101908060B CN 101908060 B CN101908060 B CN 101908060B CN 2010102149563 A CN2010102149563 A CN 2010102149563A CN 201010214956 A CN201010214956 A CN 201010214956A CN 101908060 B CN101908060 B CN 101908060B
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map
segment
unique point
according
location information
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CN2010102149563A
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Chinese (zh)
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CN101908060A (en
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王宝全
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王宝全
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Abstract

The invention discloses a manufacturing method of a vector numerical map, which comprises the following steps of: dividing the map into a plurality of map blocks, and endowing each map block with a unique identifier; determining all feature points on each map block, which can show map information appearance, and prestoring position information data of the corresponding map block on which the feature points are positioned by taking one map block as a data unit; and making a drawing program for drawing the feature points on map information to form a pattern which is close to the map information appearance to be displayed, and displaying the pattern on a screen of a display terminal. The manufacturing method can overcome the defects of large data volume, slow transmission and the like of the numerical map in the prior art effectively so as to accelerate the display speed of electronic maps and meet the query requirements of users. The invention also discloses a display method and a system of the vector numerical map.

Description

The method for making of vector numerical map, display packing and system

Technical field

The present invention relates to a kind of numerical map method for making, relate more specifically to a kind of method for making, display packing and system of vector numerical map.

Background technology

Application of Digital Maps more and more widely, traditional relatively paper map, numerical map has broad covered area, search easily, be easy to revise and advantages such as renewal.

Present common numerical map (especially being applied to the numerical map in the internet), its cartographic information are mainly through the picture format representation of file.The data volume of picture format file is very big, needs very big storage space, and is difficult to realize the vector convergent-divergent.Because the map datum of each level of zoom all is independently, just mean that the increase googol is according to amount so increase a map rank.

It is thus clear that prior digital map has data volume big, be difficult to realize shortcomings such as vector convergent-divergent and high resolving power.In internet, applications, big data volume means the longer transmission time, under the network transfer speeds condition of limited, and the have to demonstration of wait as long for map of user, this will have a strong impact on customer experience.

Therefore, be necessary to provide a kind of improved numerical map method for making to overcome above-mentioned defective.。

Summary of the invention

The data volume of numerical map that the method for making that the purpose of this invention is to provide a kind of vector numerical map, this method can solve prior art effectively is big, transmission waits shortcoming slowly, thereby accelerates the display speed of electronic chart, satisfies user's query demand.

Another object of the present invention provides a kind of display packing of vector numerical map, and the data volume of numerical map that this method can solve prior art effectively is big, transmission waits shortcoming slowly, thereby accelerates the display speed of electronic chart, satisfies user's query demand.

A purpose more of the present invention provides a kind of display system of vector numerical map, and the data volume of numerical map that this system can solve prior art effectively is big, transmission waits shortcoming slowly, thereby accelerates the display speed of electronic chart, satisfies user's query demand.

For realizing above-mentioned purpose, the invention provides a kind of method for making of vector numerical map, comprise the steps: map is divided into a plurality of map segments, and give unique sign for each map segment; Confirm to demonstrate on each map segment all unique points of map information appearance, and the location information data that said unique point is positioned on the corresponding map segment is that data cell stores in advance with a map segment; Make plotter program, be used for the unique point on the cartographic information is depicted as and the close figure of map information appearance that will show, and be presented on the screen of display terminal.

Preferably, said making plotter program step specifically comprises: make plotter program, be used for the unique point on the cartographic information is connected into curve with the close figure of the map information appearance of drawing out Yu will show, and be presented on the screen of display terminal.

Preferably; Said map comprises a plurality of level of zoom; And the map that rank is high more comprises more high resolving power and more detailed cartographic information; Said method for making also comprises step: make the map operation program, be used to control moving, dwindle and amplifieroperation of map, and obtain through moving, dwindle or amplifieroperation after need the map segment that shows.

Preferably, said cartographic information is linear cartographic information or planar cartographic information.

Preferably, said curve is the closed curve that is used to represent the open curve of linear cartographic information or is used to represent planar cartographic information.

Another embodiment of the present invention provides the method for making of vector numerical map, comprises the steps: to be the map structuring coordinate system, simultaneously said map is divided into a plurality of equal-sized map segments, and each map segment is identified with one group of coordinate figure; For each said map segment all makes up a coordinate system; Confirm to demonstrate on each map segment all unique points of map information appearance, and the coordinate figure that said unique point is positioned on the corresponding map segment is that data cell stores in advance with a map segment; Make plotter program, be used for the unique point on the cartographic information is depicted as and the close figure of map information appearance that will show, and be presented on the screen of display terminal.

A kind of display packing of vector numerical map comprises the steps: to receive the user inquiring request, and said user inquiring request has the positional information of the map of needs demonstration; Judge the sign of the map segment of the map that the positional information that can demonstrate said map is represented according to said user inquiring request; Extract the location information data of the unique point on the said map segment of storing in advance according to the sign of said map segment; Location information data according to said unique point is depicted as said unique point and the close figure of map information appearance that will show according to predetermined plotter program, and is presented on the screen of display terminal.

Preferably, said map comprises a plurality of level of zoom, and the high more map of rank comprises more high resolving power and more detailed cartographic information.

Preferably; Also comprise step: when receiving the operation signal of moving map; Calculate the distance on screen four limits of four limits and the corresponding display terminal of the map that has extracted according to the distance size that moves,, calculate the sign of the map segment that links to each other with corresponding map limit when said distance during less than predetermined value; Extract the location information data of the unique point on the corresponding map segment according to the sign of said map segment, and draw out according to predetermined plotter program.

Preferably; Also comprise step: when receiving the operation signal of enlarged map; Calculate the location information data that amplifies the unique point behind the corresponding multiple according to preset program, and the location information data of the unique point that calculates is drawn out according to predetermined plotter program; After map is amplified to a certain degree; The map segment that extracts in the high rank map the corresponding cartographic information of expression according to preset program replaces existing map segment, and the location information data of the unique point of other map segment of high one-level that will extract according to predetermined plotter program is drawn out.

Preferably; Also comprise step: when receiving the operation signal that dwindles map; Calculate the location information data that dwindles the unique point behind the corresponding multiple according to preset program, and the location information data of the unique point that calculates is drawn out according to predetermined plotter program; After map is narrowed down to a certain degree; The map segment that extracts the corresponding cartographic information of expression in the low rank map according to preset program replaces existing map segment, and the location information data of the unique point of other map segment of low one-level that will extract according to predetermined plotter program is drawn out.

A kind of display system of vector numerical map comprises receiver module, judge module, extraction module and graphics module, and said receiver module is used to receive the user inquiring request, and said user inquiring request has the positional information of the map of needs demonstration; Said judge module is used for judging according to said user inquiring request the sign of the map segment of the map that the positional information that can demonstrate said map is represented; Said extraction module is used for extracting according to the sign of said map segment the location information data of the unique point on the said map segment of storing in advance; Said graphics module is used for said unique point being depicted as and the close figure of map information appearance that will show according to predetermined plotter program according to said location information data, and is presented on the screen of display terminal.

Preferably; Also comprise memory module, the location information data that said memory module is used for all unique points that can demonstrate map information appearance on each map segment are positioned on the corresponding map segment is that data cell stores in advance with a map segment.

Compared with prior art; The method for making of vector numerical map has been utilized the characteristics and the advantage of polar plot among the present invention; At first map is divided into a plurality of map segments; Again the location information data that can demonstrate the unique point of map information appearance on each map segment is stored in advance, only need the unique point on the cartographic information is depicted as and the close figure of map information appearance that will show through plotter program then, and come out at the screen display of display terminal.Therefore, the data volume of numerical map that the method for making of vector numerical map of the present invention can solve prior art effectively is big, transmission waits shortcoming slowly, thereby accelerates the display speed of electronic chart, satisfies user's query demand.

Through following description and combine accompanying drawing, it is more clear that the present invention will become, and these accompanying drawings are used to explain embodiments of the invention.

Description of drawings

Fig. 1 is the realization flow figure of first embodiment of the method for making of vector numerical map of the present invention.

Fig. 2 is the realization flow figure of second embodiment of the method for making of vector numerical map of the present invention.

Fig. 2 .1 is map segment example among second embodiment of the method for making of vector numerical map of the present invention.

Fig. 3 is the realization flow figure of the display packing of vector numerical map of the present invention.

Fig. 4 is the structural representation of the display system of vector numerical map of the present invention.

Embodiment

With reference now to accompanying drawing, describe embodiments of the invention, the similar elements label is represented similar elements in the accompanying drawing.

Please earlier with reference to figure 1, Fig. 1 has shown the realization flow of first embodiment of the method for making of vector numerical map of the present invention, specifically comprises:

Step S101: map is divided into a plurality of map segments, and gives unique sign for each map segment, said map comprises a plurality of level of zoom, and the high more map of rank comprises more high resolving power and more detailed cartographic information.

Step S102: confirm to demonstrate on each map segment all unique points of map information appearance, and the location information data that said unique point is positioned on the corresponding map segment is that data cell stores in advance with a map segment.

Step S103: make plotter program, be used for the unique point on the cartographic information is connected into curve with the close figure of the map information appearance of drawing out Yu will show, and be presented on the screen of display terminal.

In the present embodiment, said cartographic information is linear cartographic information (like the border in area, road, river etc.) or planar cartographic information (like the lake, contour of building etc.).Said curve be used to represent the linear cartographic information and have the open curve of characteristics such as certain width and color or be used to represent planar cartographic information and closed curve fill particular color in enclosed region.

Cartographic information generally comprises border, different kinds of roads, street, shore line, buildings, sub-district, river, lake, ocean, mountain range, vegetation of different rows administrative divisions such as national boundaries, provincial boundaries etc.; These cartographic informations all can use the curve of characteristics such as having certain width and color and these two kinds of geometric figures of face of filling particular color to represent in the two dimensional surface map, and the profile of face also can be regarded closed curve as.So all available curve representation of cartographic information is that the cartographic information of linear can use the open curve of characteristics such as different in width and color to represent like profiles such as border, road, street and partial rivers.Buildings, sub-district, lake, mountain range, greenery patches etc. can use the closed curve of in enclosed region, filling particular color to represent.

Step S104: make the map operation program, be used for the moving, dwindle and amplifieroperation of display terminal control map, and obtain through moving, dwindle or amplifieroperation after need the map segment that shows.

Fig. 2 has shown the realization flow of second embodiment of the method for making of vector numerical map of the present invention, specifically comprises:

Step S201: map is divided into a plurality of level of zoom; The map that rank is high more comprises more high resolving power and more detailed cartographic information; And all make up a coordinate system for the map of each level of zoom; Map with said each level of zoom all is divided into a plurality of equal-sized map segments simultaneously, and makes the one group coordinate figure sign of each map segment with corresponding coordinate system.

Step S202: for each said map segment makes up a coordinate system; Confirm to demonstrate on each map segment all unique points of map information appearance, and the coordinate figure that said unique point is positioned on the corresponding map segment is that data cell stores in advance with a map segment.

Step S203: make plotter program, be used for the unique point on the cartographic information is connected into curve with the close figure of the map information appearance of drawing out Yu will show, and be presented on the screen of display terminal.

Step S204: make the map operation program, be used for the moving, dwindle and amplifieroperation of display terminal control map, and obtain through moving, dwindle or amplifieroperation after need the map segment that shows.

In the present embodiment, in order to reduce the data volume of map, and the data volume of the required processing that reduces at every turn to consult a map.When making map, be divided into equal-sized rectangle map segment to map, each map segment uses the coordinate system of oneself, and is unit with a pixel.The location information data of the unique point on each map segment is the coordinate figure of this unique point place as number.In order to distinguish different map segments, for the map of each level of zoom all makes up a coordinate system, and each map segment that belongs to this level of zoom all uses one group of coordinate figure sign in the corresponding coordinate system.On the map segment position of each unique point in map then the coordinate figure that is positioned on the map segment of level of zoom, map segment coordinate figure and this unique point through map calculate.Please refer to Fig. 2 .1; Fig. 2 .1 representes a rectangle map segment, the coordinate figure (50,100) on the coordinate system of the map that is designated its place level of zoom of this map segment; On this map segment, linear cartographic information " people road " and planar cartographic information " VolksGarden " have been comprised.Wherein, Some A on this map segment, B, C are three unique points on the expression cartographic information " people road "; Thereby make plotter program and formed ' people road ' highway section that is in the map segment (50,100) with the curve that these three unique points are depicted as characteristics such as having preset width and color.In like manner; Some D, E, F, G, H and I on this map segment is six unique points on the expression cartographic information " VolksGarden "; Make plotter program so that these six unique points are depicted as a closed curve; And the color relation of being scheduled in the enclosed region filling of curve has formed " VolksGarden " that is in the map segment (50,100).Wherein, the location information data of unique point A, B, C, D, E, F, G, H and I be exactly these points to be positioned at the segment upper left corner be initial point, one is the coordinate figure in the coordinate system of unit as number.

Fig. 3 has shown the realization flow of the display packing of invention vector numerical map in this, specifically comprises:

Step S301: receive the user inquiring request, said user inquiring request has the positional information of the map of needs demonstration.

Step S302: the sign of judging the map segment of the map that the positional information that can demonstrate said map is represented according to said user inquiring request.

Step S303: the location information data that extracts the unique point on the said map segment of storing in advance according to the sign of said map segment.

Step S304: the location information data according to said unique point is depicted as said unique point and the close figure of map information appearance that will show according to predetermined plotter program, and is presented on the screen of display terminal.

In the present embodiment; Behind said step S304, when receiving the moving map operation signal, calculate the distance on screen four limits of four limits and the corresponding display terminal of the map that has extracted according to the distance size that moves; When said distance during less than predetermined value; Calculate the sign of the map segment that links to each other with corresponding map limit, extract the location information data of the unique point on the corresponding map segment, and draw out according to predetermined plotter program according to the sign of said map segment; Or

When receiving the enlarged map operation signal, calculate the location information data that amplifies the unique point behind the corresponding multiple according to preset program, and the location information data of the unique point that calculates is drawn out according to predetermined plotter program; After map is amplified to a certain degree; The map segment that extracts the corresponding cartographic information of expression in the high rank map according to preset program replaces existing map segment, and according to predetermined plotter program the location information data of the unique point of the map segment that extracts is drawn out; Or

When receiving when dwindling the map operation signal, calculate the location information data that dwindles the unique point behind the corresponding multiple according to preset program, and the location information data of the unique point that calculates is drawn out according to predetermined plotter program; After map is narrowed down to a certain degree; The map segment that extracts the corresponding cartographic information of expression in the low rank map according to preset program replaces existing map segment, and according to predetermined plotter program the location information data of the unique point of the map segment that extracts is drawn out.

Fig. 4 has shown the structure of the display system of vector numerical map among the present invention, for the ease of explanation, only shows the part relevant with the embodiment of the invention.The display system of this vector numerical map can be built in the unit that combines such as the hardware cell in the electronic equipments such as computing machine, portable terminal, software unit or software and hardware.As shown in Figure 4; The display system of vector numerical map comprises memory module 220, receiver module 230, judge module 240, extraction module 250 and graphics module 260 among the present invention, and the location information data that said memory module 220 is used for all unique points that can displayed map information profile on each map segment are positioned on the corresponding map segment is that data cell stores in advance with a map segment.Said receiver module 230 is used to receive the user inquiring request, and said user inquiring request has the positional information of the map of needs demonstration.Said judge module 240 is used for judging according to said user inquiring request the sign of the map segment of the map that the positional information that can demonstrate said map is represented.Said extraction module 250 is used for extracting according to the sign of said map segment the location information data of the unique point on the said map segment of storing in advance.Said graphics module 260 is used for said unique point being depicted as and the close figure of map information appearance that will show according to predetermined plotter program according to said location information data, and is presented on the screen of display terminal.

The method for making of vector numerical map of the present invention and display packing have been utilized the characteristics and the advantage of polar plot; At first map is divided into a plurality of map segments; Again the location information data that can demonstrate the unique point of map information appearance on each map segment is stored in advance; Only need the unique point on the cartographic information is depicted as and the close figure of map information appearance that will show through plotter program then, and come out at the screen display of display terminal.Therefore, the data volume of numerical map that the method for making of vector numerical map of the present invention can solve prior art effectively is big, transmission waits shortcoming slowly, thereby accelerates the display speed of electronic chart, satisfies user's query demand.

Invention has been described more than to combine most preferred embodiment, but the present invention is not limited to the embodiment of above announcement, and should contain various modification, equivalent combinations of carrying out according to essence of the present invention.

Claims (12)

1. the method for making of a vector numerical map is characterized in that comprising the steps:
Map is divided into a plurality of map segments, and gives unique sign for each map segment;
Confirm to demonstrate on each map segment all unique points of map information appearance, and the location information data that said unique point is positioned on the corresponding map segment is that data cell stores in advance with a map segment;
Make plotter program, be used for the unique point on the cartographic information is depicted as and the close figure of map information appearance that will show, and be presented on the screen of display terminal.
2. the method for making of vector numerical map as claimed in claim 1, it is characterized in that: said cartographic information is linear cartographic information or planar cartographic information.
3. the method for making of vector numerical map as claimed in claim 1 is characterized in that, said making plotter program step specifically comprises:
Make plotter program, be used for the unique point on the cartographic information is connected into curve with the close figure of the map information appearance of drawing out Yu will show, and be presented on the screen of display terminal.
4. the method for making of vector numerical map as claimed in claim 3, it is characterized in that: said curve is the closed curve that is used to represent the open curve of linear cartographic information or is used to represent planar cartographic information.
5. the method for making of vector numerical map as claimed in claim 1 is characterized in that, said map comprises a plurality of level of zoom, and the high more map of rank comprises more high resolving power and more detailed cartographic information, and said method for making also comprises step:
Make the map operation program, be used for the moving, dwindle and amplifieroperation of display terminal control map, and obtain through moving, dwindle or amplifieroperation after need the map segment that shows.
6. the method for making of a vector numerical map is characterized in that comprising the steps:
Be the map structuring coordinate system, simultaneously said map be divided into a plurality of equal-sized map segments, and each map segment is identified with one group of coordinate figure;
For each said map segment all makes up a coordinate system; Confirm to demonstrate on each map segment all unique points of map information appearance, and the coordinate figure that said unique point is positioned on the corresponding map segment is that data cell stores in advance with a map segment;
Make plotter program, be used for the unique point on the cartographic information is depicted as and the close figure of map information appearance that will show, and be presented on the screen of display terminal.
7. the display packing of a vector numerical map is characterized in that, comprises the steps:
Receive the user inquiring request, said user inquiring request has the positional information of the map of needs demonstration;
Judge the sign of the map segment of the map that the positional information that can demonstrate said map is represented according to said user inquiring request;
Extract the location information data of the unique point on the said map segment of storing in advance according to the sign of said map segment;
Location information data according to said unique point is depicted as said unique point and the close figure of map information appearance that will show according to predetermined plotter program, and is presented on the screen of display terminal.
8. the display packing of vector numerical map as claimed in claim 7 is characterized in that, said map comprises a plurality of level of zoom, and the high more map of rank comprises more high resolving power and more detailed cartographic information, and said display packing also comprises step:
When receiving the operation signal of moving map; Calculate the distance on screen four limits of four limits and the corresponding display terminal of the map that has extracted according to the distance size that moves; When said distance during less than predetermined value; Calculate the sign of the map segment that links to each other with corresponding map limit, extract the location information data of the unique point on the corresponding map segment, and draw out according to predetermined plotter program according to the sign of said map segment.
9. the display packing of vector numerical map as claimed in claim 7 is characterized in that, said map comprises a plurality of level of zoom, and the high more map of rank comprises more high resolving power and more detailed cartographic information, and said display packing also comprises step:
When receiving the operation signal of enlarged map, calculate the location information data that amplifies the unique point behind the corresponding multiple according to preset program, and the location information data of the unique point that calculates is drawn out according to predetermined plotter program; After map is amplified to a certain degree; The map segment that extracts the corresponding cartographic information of expression in the high rank map according to preset program replaces existing map segment, and according to predetermined plotter program the location information data of the unique point of the map segment that extracts is drawn out.
10. the display packing of vector numerical map as claimed in claim 7 is characterized in that, said map comprises a plurality of level of zoom, and the high more map of rank comprises more high resolving power and more detailed cartographic information, and said display packing also comprises step:
When receiving the operation signal that dwindles map, calculate the location information data that dwindles the unique point behind the corresponding multiple according to preset program, and the location information data of the unique point that calculates is drawn out according to predetermined plotter program; After map is narrowed down to a certain degree; The map segment that extracts the corresponding cartographic information of expression in the low rank map according to preset program replaces existing map segment, and according to predetermined plotter program the location information data of the unique point of the map segment that extracts is drawn out.
11. the display system of a vector numerical map is characterized in that comprising:
Receiver module is used to receive the user inquiring request, and said user inquiring request has the positional information of the map of needs demonstration;
Judge module is used for judging according to said user inquiring request the sign of the map segment of the map that the positional information that can demonstrate said map is represented;
Extraction module, the location information data of the unique point on the said map segment that is used for storing in advance according to the sign extraction of said map segment;
Graphics module is used for said unique point being depicted as and the close figure of map information appearance that will show according to predetermined plotter program according to said location information data, and is presented on the screen of display terminal.
12. the display system of vector numerical map as claimed in claim 11 is characterized in that also comprising:
Memory module, the location information data that is used for all unique points that can demonstrate map information appearance on each map segment are positioned on the corresponding map segment is that data cell stores in advance with a map segment.
CN2010102149563A 2010-06-30 2010-06-30 Manufacturing method, display method and system of vector numerical map CN101908060B (en)

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