CN101706809B - Method, device and system for processing multi-source map data - Google Patents

Abstract

The present invention provides a method, device and system for processing multi-source map data. The method includes: selecting a data reading interface corresponding to the format of the geographic information data source interface from the multi-source map data processing system, and reading the interface according to the data The interface is used to read geographic information data from the geographic information data source; the geographic information data is layered according to the preset layer classification to obtain geographic information layered data; the coordinate system is unified; in the form of layers The geographic information layered data is loaded and displayed on the map; the layer interface detects the user's business operation request and transmits it to the dispatch center, and the dispatch center dispatches the layer interface of the corresponding layer to execute the business operation. The solution of the present invention can synthesize various types of data provided by various manufacturers and display them in an optimal manner, solving the problem that data from different data sources cannot be shared on one application platform due to the different formats and interfaces of geographical information data provided by different manufacturers question.

Description

Multi-source map data processing method, device and system

technical field

The invention relates to the technical field of geographic information systems, in particular to a multi-source map data processing method, device and system.

Background technique

Geographic Information Systems (GIS, Geographic Information Systems) is a high-tech technology that integrates computer graphics and databases to store and process spatial information. It organically combines geographic location and related attributes, and integrates spatial information and Its attribute information is accurate and true, and it is output to users with pictures and texts, which meets the requirements of urban and rural construction, enterprise management, and residents' life for spatial information. With the help of its unique spatial analysis function and visual expression function, various auxiliary decision-making is carried out. At present, GIS is stepping out of the traditional fields such as surveying and mapping, drawing, resources and environmental management, and increasingly penetrates into all aspects of social life, and gradually begins to have close contact with the general public. Therefore, many GIS information providers and service providers have emerged to provide users with Map search, environmental monitoring, disaster emergency response, bus transfer, satellite navigation, travel information and other services.

Each GIS manufacturer or service provider focuses on different fields, so the geographic information data styles, advantages, and service methods provided by each manufacturer are different. For example, Google Earth (Google Earth) adopts ultra-high image compression technology, which can provide a variety of data in real time, and combines local search and satellite images to allow users to browse satellite images and three-dimensional buildings or terrains of any location in the world. images; the 3D map positioning technology it provides allows users to interactively view a specific area on a 3D map, perform map control such as zooming in, zooming out, roaming, etc. from different perspectives, and automatically search for routes to complete road navigation operations; but Google Earth does not It has the data collection and editing functions of GIS, but does not have the mapping, spatial query and spatial analysis functions of GIS. Professional GIS vendors, such as Lingtu UU, can provide vector maps and raster maps, and can provide various thematic maps layered according to user needs, and can also obtain some special maps for geoscience analysis through spatial analysis, such as slope maps, Slope aspect diagrams, profile diagrams, etc.; in addition, Lingtu UU can also provide GIS spatial query and spatial analysis functions, including topological spatial query, buffer analysis, overlay analysis, spatial set analysis, geoscience analysis, establishment of digital elevation models, terrain Analysis, etc.; however, Lingtu UU can provide relatively little satellite image information, and its ability to process 3D map positioning is relatively weak.

However, the data formats and interfaces provided by geographic information data sources of GIS manufacturers or service providers are different. Even the geographic information data produced by the same manufacturer also provides several independent interfaces due to different types of data. Therefore, in the existing GIS In the application system, only a GIS vendor and its geographic information data source and interface standard can be selected according to the specific application needs, and its own system architecture can be designed according to the specific data format and interface standard of the data source, and the advantages of various GIS vendors cannot be integrated Instead, use data from multiple geospatial data sources centrally.

Contents of the invention

The technical problem to be solved by the present invention is to provide a multi-source map data processing method, which can integrate geographical information data from different data sources and display them in layers on the graphics terminal, so as to solve the problems caused by the format and format of geographical information data provided by different manufacturers. The problem that different data sources cannot be shared on one application platform due to different interfaces.

The present invention also provides a multi-source map data processing device and system to ensure the practical application of the above method.

In order to solve the above problems, the present invention discloses a method for processing multi-source map data, which includes: selecting a data reading interface corresponding to the interface format of the geographic information data source from the multi-source map data processing system, and reading the interface according to the data Get the interface to read geographic information data from geographic information data sources; layer geographic information data according to the preset layer classification to obtain geographic information layered data; determine whether the coordinate system of geographic information data sources is consistent with multi-source map data The coordinate system of the processing system is the same, if not, the above-mentioned geographic information layered data is converted into data under the coordinate system of the multi-source map data processing system; the above-mentioned geographic information layered data is loaded and displayed on the map in the form of a layer; After the layer interface of the multi-source map data processing system detects the user's business operation request, it transmits the business operation request to the dispatch center; the dispatch center dispatches the layer interface of the corresponding layer to execute the above business operations.

Preferably, the above-mentioned business operations include moving, rotating, zooming, labeling, querying, layer closing and/or layer opening, and the layers performing the above-mentioned business operations include one or more layers.

Preferably, before the step of loading and displaying the geographic information layered data on the map in the form of a layer, the step further includes: merging the layered data from different data sources and of the same category.

Preferably, the above-mentioned preset layer classification includes a traffic line layer, a building layer, a green layer, a water system layer and/or a user-drawn line layer; the coordinate system of the above-mentioned multi-source map data processing system takes the zero longitude and latitude on the earth as the origin, North is the positive y direction and east is the positive x direction.

According to another preferred embodiment of the present invention, a multi-source map data processing device is also disclosed, including a data source interface library, a data acquisition module, a data conversion module, a layer interface module and a dispatch center module, wherein: the data source interface The library saves one or more data reading interfaces defined according to the interface format of the map data source; the data acquisition module is used to select the corresponding data reading interface from the data source interface library, and, according to the above data reading interface, obtain the geographic information The data source reads the geographic information data; the data conversion module is used to perform hierarchical operations on the geographic information data obtained by the data acquisition module according to the preset layer classification, to obtain the geographic information layered data, and to judge the above-mentioned geographic information layered data Whether the coordinate system of the multi-source map data processing system is the same as that of the multi-source map data processing system, if not, convert the geographic information layered data into data under the coordinate system of the multi-source map data processing system; The geographical information layered data obtained by the conversion module is displayed on the map to form a layer, and the user's business operation request is detected, and the business operation request is passed to the dispatching center module; the dispatching center module is used to analyze the transmission of the user interface module According to the business operation request, select the corresponding layer and schedule the layer interface module to perform the above business operations on the layer, and schedule the data acquisition module to read geographic information data from the geographic information data source.

Preferably, the multi-source map data processing device further includes a layer merging module, and the layer merging module is used for merging hierarchical data of the same category from different data sources, wherein, if the layered data information from different data sources If they are the same, keep the hierarchical data of any data source; otherwise, select according to preset rules or prompt the user to select relevant hierarchical data.

According to another preferred embodiment of the present invention, a multi-source map data processing system is also disclosed, which includes a geographic information data source server and a multi-source map data processing device: the geographic information data source server specifically includes a geographic information database and a geographic Information data interface, the above-mentioned geographic information database is used to store geographic information data, and the geographic information data interface is used to provide an interface for reading geographic information data for the multi-source map data processing device; the multi-source map data processing device specifically includes a data source interface library, Data acquisition module, data conversion module, layer interface module and dispatching center module, the above-mentioned data source interface library stores one or more data reading interfaces defined according to the format of the map data source interface; the data acquisition module is used to obtain data from the data source interface Select the corresponding data reading interface in the library, and read the geographic information data from the geographic information database through the geographic information data interface of the geographic information data source server according to the above data reading interface; the data conversion module is used to Classifying the geographic information data obtained by the data acquisition module for layering operations to obtain the geographic information layered data, and judging whether the coordinate system of the geographic information layered data is the same as the coordinate system of the multi-source map data processing system, if not, Then convert the geographic information layered data into the data under the coordinate system of the multi-source map data processing system; the layer interface module is used to form the geographic information layered data obtained by the data conversion module into a layer and display it on the map. And, detecting the user's business operation request, and transmitting the business operation request to the dispatching center module; the dispatching center module is used to analyze the business operation request transmitted by the layer interface module, select the corresponding layer and dispatch the layer interface The module executes the above business operations on the layer, and the scheduling data acquisition module reads the geographic information data from the geographic information data source.

According to yet another preferred embodiment of the present invention, a multi-source map data processing system is disclosed, including a geographic information data source server, a multi-source map data processing device, and a graphics terminal, wherein: the geographic information data source server includes geographic information A database and a geographic information data interface, the geographic information database is used to store geographic information data; the geographic information data interface is used to provide the multi-source map data processing device with an interface for reading geographic information data; the multi-source map The data processing device includes a data source interface library, a data acquisition module, a data conversion module and a dispatch center module, and the data source interface library stores one or more data reading interfaces defined according to the map data source interface format; the data acquisition The module is used to select a corresponding data reading interface from the data source interface library, and read geographic information data from the geographic information database through the geographic information data interface of the geographic information data source server according to the above data reading interface; The data conversion module is used to perform hierarchical operations on the geographical information data obtained by the data acquisition module according to the preset layer classification to obtain hierarchical geographical information data, and to determine whether the coordinate system of the geographical information hierarchical data is It is the same as the coordinate system of the multi-source map data processing system, if not, convert the geographic information layered data into the data under the coordinate system of the multi-source map data processing system; the dispatching center module is used to analyze the The service operation request transmitted by the layer interface module of the graphic terminal, select the corresponding layer and schedule the layer interface module to perform the business operation on the layer, and schedule the data acquisition module to obtain the data from the geographic information data source Reading geographic information data; the graphics terminal includes a layer interface module, which is used to form layers of geographic information layered data obtained by the data conversion module to display on the map. And, detecting the service operation request of the user, and delivering the service operation request to the dispatch center module.

Preferably, the multi-source map data processing device further includes a layer merging module, and the layer merging module is used for merging hierarchical data of the same category from different data sources, wherein, if the layered data information from different data sources If they are the same, keep the hierarchical data of any data source; otherwise, select according to preset rules or prompt the user to select relevant hierarchical data.

Compared with the prior art, the present invention has the following advantages:

Geographical information data is very rich, including various types of information, and with the passage of time, various new information will be generated. At the same time, the data produced by major manufacturers have their own advantages and characteristics. The interface, unified coordinate system and hierarchical organization of the acquired GIS data can adapt to all kinds of changes without change, integrate various types of data from various manufacturers, and display them in an optimal way, solving the format of geographic information data provided by different manufacturers And/or the interface is different so that it is not possible to share data from different data sources on one application platform.

Description of drawings

Fig. 1 is a flow chart of the first embodiment of the multi-source map data processing method of the present invention;

Fig. 2 is a structural block diagram of the second embodiment of the multi-source map data processing method of the present invention;

Fig. 3 is a structural block diagram of an embodiment of the multi-source map data processing device of the present invention;

Fig. 4 is a structural block diagram of the first embodiment of the multi-source map data processing system of the present invention;

Fig. 5 is a structural block diagram of the second embodiment of the multi-source map data processing system of the present invention.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to Fig. 1, it shows a flow chart of the first embodiment of the multi-source map data processing method of the present invention, which specifically includes the following steps:

Step 101: Select the data reading interface of the geographic information data source;

All major GIS manufacturers provide interfaces for their geographic information databases, and the interface formats are different. In order to read geographic information data from different data sources, in the multi-source map data processing system, a kind of GIS data source is defined. A specific interface format, before reading geographic information data from a GIS data source, first select a specific interface according to the GIS data source.

Step 102: Read the geographic information data from the geographic information data source according to the method defined by the above-mentioned data reading interface;

Step 103: Perform layering operations on the above geographic information data according to the preset layer classification to obtain geographic information layered data;

In order to more conveniently organize and integrate geographic information data from different GIS data sources, the data from GIS data sources are divided into data layers defined by the system itself, such as traffic line layer, building layer, green layer, water system layer, user-drawn lines layers and so on.

Step 104: unified coordinate system;

Different GIS manufacturers may define the coordinate system differently. For example, the coordinate system of some manufacturers takes the zero longitude and latitude point on the earth as the origin, the positive y direction to the north, and the positive x direction to the east; the coordinate system of some manufacturers The system takes zero latitude and east longitude 180 degrees as the origin, the northward direction is the positive y direction, and the eastward direction is the positive x direction. In order to display in one system, the coordinate system must be unified, and a fixed coordinate system is used as the reference coordinate system to convert the hierarchical data different from the reference coordinate system.

In this embodiment, the zero latitude and longitude on the earth is taken as the origin, the northward direction is the positive y direction, and the eastward direction is the positive x direction.

Step 105: Load and display the above-mentioned geographic information layered data in the form of layers on the map after the unified coordinate system.

When loading geographic information layered data presentation layers, it can be loaded layer by layer from bottom to top in the order predefined by the system, or it can be loaded in a user-defined order.

In another preferred embodiment of this embodiment, when each layered data is loaded into the multi-source map data processing system to form a layer and displayed on the map, if two layered data types from different data sources are the same (such as The water system layer of the first data source and the water system layer of the second data source), these two layers are merged into one in order to simplify the processing and make the displayed layers more standardized and beautiful.

Layer merging can be done in the following ways:

If the data information of the two layers is the same, keep the layer data from any one of the data sources, for example, keep the data from the first data source; if the data information of the two layers is not the same, you can use the following two solutions one of the:

Solution 1: Obtain the generation or update time of the two data sources through the corresponding data source reading interface, and keep the layer data whose generation or update time is closest to the current time after comparison; if the generation or update time of the two data sources or the update time is the same, the user will be prompted to manually select which data source to keep the layer data from; of course, in the case of the same generation or update time, it can also be automatically selected from the first data source or the second data source according to the user's pre-configuration. The layer data of the data source;

Solution 2: Prompt the user to manually choose which data source to keep the information from.

In consideration of minimizing the workload of the user, it is preferable to adopt the first solution above.

Referring to Fig. 2, it shows the flow of the second embodiment of the multi-source map data processing method of the present invention, which specifically includes:

Step 201: Select the data reading interface of the geographic information data source, and read the geographic information data;

Step 202: Perform layering operations on the above geographic information data, and unify the coordinate system for the obtained geographic information layered data;

Step 203: loading and displaying the above-mentioned geographic information layered data in the form of layers;

Step 204: Detect whether the user has a service operation request? If so, turn to step 205; otherwise, loop the detection and judgment process of step 204;

Define the user interface based on the visual layer, let the layer interface complete the event listening function, and obtain the user's business operation requests such as moving, rotating, zooming, labeling, querying, layer opening/closing, etc., which can make the user's operation more convenient , direct, and enhance the user experience;

Step 205: Transfer the above business operation request to the dispatch center;

Step 206: The dispatching center selects the interface of the corresponding layer to execute the above business operations.

After the dispatch center receives the user's business operation request, it does not perform specific business operations itself, but selects and schedules layer interfaces to execute on the appropriate layer; in addition, there may be only one layer involved in the above business operations , and there may be multiple layers. For example, when the user modifies the travel route, it only needs to be operated on the layer where the user draws the route; when the user needs to zoom the layer, all the layers should perform the zoom operation together.

After receiving the user's business operation request, the interface of any layer will not immediately process it by itself, but report it to the dispatching center, so that the dispatching center with more information can decide which resources to use and direct the interface of the appropriate layer To perform the corresponding business operations, on the one hand, it can make the system have a better modular structure, easy to manage, and can easily expand the system functions and business scope; on the other hand, use the layer that is more suitable for processing the corresponding operations To perform corresponding business operations, the advantages of each layer from different data sources can be fully utilized, and the processing efficiency and application effect of the system can be further improved.

In addition, as needed, users can add and modify layers, and can also read geographic information data from a new data source or re-read data from a data source that has been read by requesting the dispatch center. At this time, it needs to be executed again Or repeat the process of steps 201 to 206.

Referring to Fig. 3, it shows a structural block diagram of an embodiment of the multi-source map data processing device of the present invention, which specifically includes the following units:

Data source interface library 310: used to store data reading interfaces defined according to different map data source interface formats; there can be one or more data reading interfaces stored in the data source interface library 310;

Data acquisition module 311: used to select a corresponding data reading interface from the data source interface library 310, and read geographic information data from different geographic information data sources according to the above data reading interface;

Data conversion module 312: used to perform hierarchical operations on the geographical information data output by the data acquisition module 311 according to the preset layer classification, to obtain hierarchical geographical information data; and unify the coordinate system of the above-mentioned geographical information hierarchical data;

Wherein, the method of unifying the coordinate system may specifically be: judging whether the coordinate system of the above-mentioned geographic information data source is the same as the coordinate system of the multi-source map data processing system, and if not, converting the above-mentioned geographic information layered data into multi-source map data Process data in the coordinate system of the system;

In the device embodiment of the present invention, the layer classification can be divided according to classification methods such as traffic line layer, building layer, greening layer, water system layer, and user-drawn line layer; the coordinate system of the multi-source map data processing system is preferably based on the The zero longitude and latitude point is the origin, the north is the positive y direction, and the east is the positive x direction;

Layer interface module 313: for displaying on the map the layered geographic information data output by the data conversion module 312; In addition, according to the instruction of the dispatch center module 314, the above-mentioned business operations are executed on the corresponding layer;

Among them, the above business operations specifically include moving, rotating, zooming, labeling, querying, layer opening/closing, etc.;

Dispatch center module 314: used to analyze the business operation request delivered by the layer interface module 313, select an appropriate layer and schedule the layer interface module 313 to execute the business operation on the above layer; in addition, according to the layer interface module 313 delivered For a data read request, the scheduling data acquisition module 311 reads geographic information data from a geographic information data source.

In another preferred embodiment of this device embodiment, in addition to the above-mentioned constituent modules, a layer merging module is also included, and the layer merging module is used to output the data conversion module 312 from different data sources but with the same category. The layer data is merged, and then the merged layer data is submitted to the layer interface module 313 for loading and displaying.

Referring to Fig. 4, it shows a structural block diagram of the first embodiment of the multi-source map data processing system of the present invention, which specifically includes the following devices:

Multi-source map data processing device 31: used to read geographic information data from the geographic information server 32, and display it layered on the map; and receive and analyze the user's business operation request for the map data layer, and then select the appropriate business execution Layer, and perform specific business operations on this layer;

Geographic information server 32: used to store geographic information data and provide geographic information data interfaces for the multi-source map data processing device 31.

Wherein, the multi-source map data processing device 31 specifically includes:

Data source interface library 310: used to store data reading interfaces defined according to different map data source interface formats; there can be one or more data reading interfaces stored in the data source interface library 310;

Data acquisition module 311: for selecting the corresponding data reading interface from the data source interface library 310, and according to the above-mentioned data reading interface, through the geographic information data interface 322 of the geographic information data source server 32 to read from the geographic information database 321 Get geographic information data;

Data conversion module 312: used for classifying according to the preset layer, and performing hierarchical operation on the geographic information data output by the data acquisition module 311 to obtain hierarchical geographic information data; and, judging whether the coordinate system of the geographic information database 321 is consistent with this The coordinate system of the system is the same, if not, the above-mentioned geographical information layered data is converted into the data under the coordinate system of this system;

Layer merging module 315: used to merge layered data from different data sources but of the same category, and then submit the merged geographic information layered data to layer interface module 313 for loading and displaying on the map;

Layer interface module 313: used to load and display the layered geographic information data output by the layer merging module 315 on the map in a layer manner; or directly load and display the layered geographic information data output by the data conversion module 312; in addition, The layer interface module 313 is also used to detect the user's business operation request, and transmit the business operation request to the dispatch center module 314; perform specific business operations on

Dispatching center module 314: used to receive and analyze the business operation request transmitted by the layer interface module 313, select the corresponding layer and schedule the layer interface module 313 to execute the business operation on this layer; the dispatching center module 314 is also used to According to the data reading request transmitted by the layer interface module 313 , the scheduling data acquisition module 311 reads geographic information data from the geographic information server 32 .

The geographic information server 32 specifically includes:

Geographic information database 321: for storing geographic information data;

Geographic information data interface 322 : used to provide the data acquisition module 311 of the multi-source map data processing device 31 with an interface for reading geographic information data.

Referring to Fig. 5, it shows a structural block diagram of the second embodiment of the multi-source map data processing system of the present invention, which specifically includes a multi-source map data processing device 31, a geographic information server 32 and a graphic terminal 33:

Multi-source map data processing device 31: used to read geographic information data from geographic information server 32, and display it layered on the map; and receive and analyze the business operation request for the map data layer sent by the user through the graphic terminal 33, Then select the appropriate business execution layer, and send business execution instructions to the graphic execution.

Wherein, the multi-source map data processing device 31 specifically includes: a data source interface library 310, a data acquisition module 311, a data conversion module 312 and a dispatch center module 314:

The data source interface library 310 is used to store different map data source data reading interfaces;

The data acquisition module 311 is used to select the corresponding data reading interface from the data source interface library 310, and read the data from the geographic information database 321 through the geographic information data interface 322 of the geographic information data source server 32 according to the above data reading interface. geographic information data;

The data conversion module 312 is used to classify according to the preset layer, perform hierarchical operation on the geographic information data output by the data acquisition module 311, obtain the geographic information layered data, and unify the above-mentioned geographic information layered data coordinate system;

The dispatching center module 314 is used to receive and analyze the business operation request transmitted by the graphics terminal 33 and select the corresponding layer to execute the above business operations, and dispatch the data acquisition module 311 from the geographic information server 32 according to the data reading request transmitted by the graphics terminal 33. Read geospatial data.

The layer merging module 315 is used to merge the layered data of the same category from different data sources output by the data conversion module 312, and then submit the merged geographic information layered data to the graphic terminal 33 for loading and displaying on the map.

Geographical information server 32: for preserving geographic information data, and provide geographic information data interface for multi-source map data processing device 31; The data acquisition module 311 of the multi-source map data processing device 31 provides a geographic information data interface 322 for reading geographic information data.

Graphic terminal 33: specifically includes a layer interface module 333, which is used to load and display the geographical information layered data obtained by the multi-source map data processing device 31; and, receiving a business operation instruction from the multi-source map data processing device 31, and executing a specific business operation on the layer specified by the above business operation instruction.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other. For the device and system embodiments of the present invention, since they are basically similar to the method embodiments, the description is relatively simple, and for relevant parts, please refer to the part of the description of the method embodiments.

Above, a kind of multi-source map data processing method, device and system provided by the present invention have been introduced in detail. In this paper, specific examples have been used to illustrate the principle and implementation of the present invention. The descriptions of the above embodiments are only used to help Understand the method of the present invention and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation and scope of application. In summary, the content of this specification is not It should be understood as a limitation of the present invention.

Claims (9)

1. a multi-source map data processing method is characterized in that, comprising:

From the multi-source map data handling system, select and the corresponding data fetch interface of geographic information data source interface form, and read geographic information data from said geographic information data source according to this data fetch interface;

Figure layer classification by preset carried out hierarchical operations with said geographic information data, obtains the geography information individual-layer data;

Whether the coordinate system of judging said geographic information data source is identical with the coordinate system of said multi-source map data handling system, if not, then converts said geography information individual-layer data under the coordinate system of said multi-source map data handling system data;

Form to scheme layer loads on map and represents said geography information individual-layer data;

After the figure layer interface of said multi-source map data handling system detects user's business operation request, said business operation request is passed to the dispatching center;

The figure layer interface of said dispatching center's scheduling corresponding figures layer is carried out said business operation.

2. the method for claim 1 is characterized in that, that said business operation comprises is mobile, rotation, convergent-divergent, mark, inquiry, the figure layer is closed and/or scheme layer open, and the figure layer of carrying out said business operation comprises one or more figure layers.

3. the method for claim 1 is characterized in that, said on map, the loading with the form of scheming layer represents said geography information individual-layer data step and also comprise before:

To merge from different pieces of information source and the identical individual-layer data of classification, wherein,, then keep the individual-layer data of arbitrary data source as if identical from the individual-layer data information in different pieces of information source; Otherwise, select relevant individual-layer data by preset rule selection or prompting user.

4. the method for claim 1 is characterized in that:

Said preset figure layer classification comprises that traffic route layer, construction level, greening layer, water system layer and/or user draw line layer;

The coordinate system of said multi-source map data handling system is an initial point with tellurian zero longitude and latitude, northwards is positive y direction, is eastwards positive x direction.

5. a multi-source map data processing equipment is characterized in that, said device comprises data source interface library, data acquisition module, data conversion module, figure layer interface module and dispatching center's module, wherein:

Said data source interface library is preserved the data fetch interface of the one or more interface format of data source according to the map definition;

Said data acquisition module is used for selecting corresponding data fetch interface from said data source interface library, and, read geographic information data according to above-mentioned data fetch interface from the geographic information data source;

Said data conversion module is used for by preset figure layer classification the geographic information data that said data acquisition module obtains being carried out hierarchical operations, obtains the geography information individual-layer data; And, judge whether the coordinate system of said geography information individual-layer data is identical with the coordinate system of multi-source map data handling system, if not, then convert this geography information individual-layer data under the coordinate system of said multi-source map data handling system data;

The geography information individual-layer data composition diagram layer that said figure layer interface module is used for said data conversion module is obtained represents on map, and, detect user's business operation request, and said business operation request is passed to said dispatching center module;

Said dispatching center module is used to analyze the business operation request that said Subscriber Interface Module SIM transmits, and the corresponding figure layer of selection is also dispatched said figure layer interface module at the said business operation of this figure layer execution; And, dispatch said data acquisition module and read geographic information data from the geographic information data source.

6. device as claimed in claim 5; It is characterized in that; Said device comprises that also the figure layer merges module, said figure layer merge module be used for from the different pieces of information source but the identical individual-layer data of classification merge, wherein; As if identical, then keep the individual-layer data of arbitrary data source from the individual-layer data information in different pieces of information source; Otherwise, select relevant individual-layer data by preset rule selection or prompting user.

7. a multi-source map data handling system is characterized in that, said system comprises geographic information data source server and multi-source map data processing equipment, wherein:

Said geographic information data source server comprises geographic information database and geographic information data interface, and said geographic information database is used to store geographic information data; Said geographic information data interface is used to said multi-source map data processing equipment the interface that reads geographic information data is provided;

Said multi-source map data processing equipment comprises data source interface library, data acquisition module, data conversion module, figure layer interface module and dispatching center's module, and said data source interface library is preserved the data fetch interface of the one or more interface format of data source according to the map definition; Said data acquisition module is used for selecting corresponding data fetch interface from said data source interface library, and from geographic information database, reads geographic information data according to the geographic information data interface of above-mentioned data fetch interface through said geographic information data source server; Said data conversion module is used for by preset figure layer classification the geographic information data that said data acquisition module obtains being carried out hierarchical operations; Obtain the geography information individual-layer data; And whether the coordinate system of judging said geography information individual-layer data is identical with the coordinate system of said multi-source map data handling system; If not, then convert this geography information individual-layer data under the said multi-source map data handling system coordinate system data; The geography information individual-layer data composition diagram layer that said figure layer interface module is used for said data conversion module is obtained represents on map, and, detect user's business operation request, and said business operation request is passed to said dispatching center module; Said dispatching center module is used to analyze the business operation request that said figure layer interface module is transmitted; The corresponding figure layer of selection is also dispatched said figure layer interface module at the said business operation of this figure layer execution; And, dispatch said data acquisition module and read geographic information data from the geographic information data source.

8. a multi-source map data handling system is characterized in that, said system comprises geographic information data source server, multi-source map data processing equipment and graphic terminal, wherein:

Said geographic information data source server comprises geographic information database and geographic information data interface, and said geographic information database is used to store geographic information data; Said geographic information data interface is used to said multi-source map data processing equipment the interface that reads geographic information data is provided;

Said multi-source map data processing equipment comprises data source interface library, data acquisition module, data conversion module and dispatching center's module, and said data source interface library is preserved the data fetch interface of the one or more interface format of data source according to the map definition; Said data acquisition module is used for selecting corresponding data fetch interface from said data source interface library, and from geographic information database, reads geographic information data according to the geographic information data interface of above-mentioned data fetch interface through said geographic information data source server; Said data conversion module is used for by preset figure layer classification the geographic information data that said data acquisition module obtains being carried out hierarchical operations; Obtain the geography information individual-layer data; And whether the coordinate system of judging said geography information individual-layer data is identical with the coordinate system of said multi-source map data handling system; If not, then convert this geography information individual-layer data under the said multi-source map data handling system coordinate system data; Said dispatching center module is used to analyze the business operation request that the figure layer interface module of said graphic terminal is transmitted; The corresponding figure layer of selection is also dispatched said figure layer interface module at the said business operation of this figure layer execution; And, dispatch said data acquisition module and read geographic information data from the geographic information data source;

Said graphic terminal includes figure layer interface module, and the geography information individual-layer data composition diagram layer that said figure layer interface module is used for said data conversion module is obtained represents on map.And, detect user's business operation request, and said business operation request is passed to said dispatching center module.

9. like the described system in one of claim 7 or 8; It is characterized in that; Said multi-source map data processing equipment comprises that also the figure layer merges module, said figure layer merge module be used for from the different pieces of information source but the identical individual-layer data of classification merge, wherein; As if identical, then keep the individual-layer data of arbitrary data source from the individual-layer data information in different pieces of information source; Otherwise, select relevant individual-layer data by preset rule selection or prompting user.

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