CN104599324A - Map data loading method and map data loading device based on GIS (geographic information system) platform - Google Patents
Map data loading method and map data loading device based on GIS (geographic information system) platform Download PDFInfo
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- CN104599324A CN104599324A CN201510063333.3A CN201510063333A CN104599324A CN 104599324 A CN104599324 A CN 104599324A CN 201510063333 A CN201510063333 A CN 201510063333A CN 104599324 A CN104599324 A CN 104599324A
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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
- G06F16/25—Integrating or interfacing systems involving database management systems
- G06F16/254—Extract, transform and load [ETL] procedures, e.g. ETL data flows in data warehouses
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/29—Geographical information databases
Abstract
The invention provides a map data loading method and a map data loading device based on a GIS (geographic information system) platform. Map data of various regions are acquired, the displaying hierarchy of each map datum is calculated, an authority file is created and stored according to the displaying hierarchies of the map data and the regional information of the map data, and the created authority file comprises data attributes corresponding to the displaying hierarchies of the map data in the regions. The map data loading method comprises the following steps of acquiring a map loading instruction; determining objective regional information and objective displaying hierarchies according to the map loading instruction; acquiring the authority file; acquiring objective data attributes which correspond to the objective regional information and the objective display hierarchies from the authority file according to the objective regional information and the objective displaying hierarchies; and loading objective map data according to the objective data attributes. According to the scheme, the loading efficiency of the map data is improved.
Description
Technical field
The present invention relates to field of computer technology, particularly a kind of map datum loading method based on GIS platform and device.
Background technology
GIS (Geographic Information System, Geographic Information System) platform is under the common support of computer software and hardware system, geographic distribution data relevant in epigeosphere space gathered, stores, manage, computing, analysis, display and description technological system.Two three-dimensional GIS platform both can load two dimensional map data also can load three-dimensional map data.
The mode that current two three-dimensional GIS platform load three-dimensional map data comprises: gather three-dimensional map data, and calculate three-dimensional map data to be loaded by the method for quaternary tree, carries out the displaying of three-dimensional map data according to the three-dimensional map data of band loading.
According to prior art, when loading map datum, needing the process gathering and calculate, having caused the efficiency when map datum loads lower.
Summary of the invention
In view of this, the invention provides a kind of map datum loading method based on GIS platform and device, with the problem that efficiency when solving map datum loading in prior art is lower.
The invention provides a kind of map datum loading method based on GIS platform, obtain the map datum of each region, calculate the display level of each map datum, according to the display level of each map datum and the regional information of each map datum, create and storage specification file, wherein, the data attribute corresponding with the display level of each map datum in each region is also comprised in the described authority file of establishment; Comprise:
Obtain map load instructions, determine target area information and target display level according to described map load instructions;
Obtain authority file, according to described target area information and described target display level, in described authority file, obtain described target area information and target data attribute corresponding to described target display level;
According to described target data attribute loaded targets map datum.
Preferably, arrange each 3d viewpoint altitude range and the corresponding relation showing level, the display level of each map datum of described calculating, comprising:
Calculate the 3d viewpoint altitude range of each map datum;
According to the corresponding relation of each 3d viewpoint altitude range arranged with display level, determine the display level of described 3d viewpoint altitude range.
Preferably, comprise further:
When receiving two-dimentional three-dimensional conversion instruction, described target area information and described target display level are added in the three-dimensional conversion instruction of described two dimension, and three-dimensional for described two dimension conversion instruction is sent to target dispatch module, to make described target dispatch module according to described target area information and described target display level, perform described acquisition authority file.
Preferably,
Comprise further: the environmental variance that the store path of authority file is corresponding is set;
Described acquisition authority file, comprising: the value reading described environmental variance, and the value according to the described environmental variance read is determined to obtain described authority file according to described store path by the described store path that described regulation file is corresponding.
Preferably,
Comprise further: the data attribute in described authority file also comprises the memory location of described target map data;
, comprise further before storage specification file in described establishment: the sharing mode of determining each map datum; Being that network is shared map datum and is stored in web data server by sharing mode, is the physical memory that map datum that user exclusively enjoys is stored to local computer by sharing mode.
Present invention also offers a kind of map datum charger based on GIS platform, comprising:
First acquiring unit, for obtaining the map datum of each region;
Computing unit, for calculating the display level of each map datum;
Storage unit, for according to the display level of each map datum and the regional information of each map datum, create and storage specification file, wherein, in the described authority file of establishment, also comprise the data attribute corresponding with the display level of each map datum in each region;
Second acquisition unit, for obtaining map load instructions, determines target area information and target display level according to described map load instructions;
3rd acquiring unit, for obtaining authority file, according to described target area information and described target display level, obtains described target area information and target data attribute corresponding to described target display level in described authority file;
Loading unit, for according to described target data attribute loaded targets map datum.
Preferably,
Described storage unit, for storing each 3d viewpoint altitude range and the corresponding relation showing level;
Described computing unit, for calculating the 3d viewpoint altitude range of each map datum; According to the corresponding relation of each 3d viewpoint altitude range arranged with display level, determine the display level of described 3d viewpoint altitude range.
Preferably, comprise further:
Transmitting element, for when receiving two-dimentional three-dimensional conversion instruction, described target area information and described target display level are added in the three-dimensional conversion instruction of described two dimension, and three-dimensional for described two dimension conversion instruction is sent to target dispatch module, to make described target dispatch module according to described target area information and described target display level, perform described acquisition authority file.
Preferably,
Described storage unit, the environmental variance that the store path for storage specification file is corresponding;
Described 3rd acquiring unit, for reading the value of described environmental variance, the value according to the described environmental variance read is determined to obtain described authority file according to described store path by the described store path that described regulation file is corresponding.
Preferably,
Data attribute in described authority file also comprises the memory location of described target map data, comprises further: determining unit, for determining the sharing mode of each map datum; Being that network is shared map datum and is stored in web data server by sharing mode, is the physical memory that map datum that user exclusively enjoys is stored to local computer by sharing mode.
Embodiments provide a kind of map datum loading method based on GIS platform and device, by precomputing the display level of each map datum in each region, and the regional information of data creates authority file with display level according to the map, when when recording map datum, in authority file, directly obtain the regional information of map datum to be loaded and show map datum corresponding to level, and then loading map datum, eliminate the time gathering and calculate, improve the loading efficiency of map datum.
Accompanying drawing explanation
Fig. 1 is the method flow diagram that the embodiment of the present invention provides;
Fig. 2 is the method flow diagram that another embodiment of the present invention provides;
Fig. 3 is the hardware structure figure of the device place equipment that the embodiment of the present invention provides;
Fig. 4 is the apparatus structure schematic diagram that the embodiment of the present invention provides;
Fig. 5 is the apparatus structure schematic diagram that another embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, embodiments provide a kind of map datum loading method based on GIS platform, obtain the map datum of each region, calculate the display level of each map datum, according to the display level of each map datum and the regional information of each map datum, create and storage specification file, wherein, in the described authority file of establishment, also comprise the data attribute corresponding with the display level of each map datum in each region; The method can comprise the following steps:
Step 101: determine target area information and target display level.
Step 102: obtain authority file, according to described target area information and described target display level, obtains described target area information, target data attribute corresponding to described target display level in described authority file.
Step 103: according to described target data attribute loaded targets map datum.
According to this programme, by precomputing the display level of each map datum in each region, and the regional information of data creates authority file with display level according to the map, when when recording map datum, in authority file, directly obtain the regional information of map datum to be loaded and show map datum corresponding to level, load map datum, eliminate the time gathering and calculate, improve the loading efficiency of map datum.
Due in prior art, the load path of map datum is fixed route, after the memory location of map datum converts, utilize the load path pre-set cannot load this map datum when loading this map datum, therefore, the environmental variance that the store path of authority file is corresponding can be set, when loading map datum, only need the value reading this environmental variance, when the memory location of authority file is after changing, the value of environmental variance changes, by reading the value of this environmental variance, determine the memory location of Current specifications file, thus the map datum in load rule file.
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in Figure 2, embodiments provide a kind of map datum loading method based on GIS platform, the method can comprise the following steps:
Step 201: the map datum obtaining each region, and calculate the display level of each map datum, according to the display level of each map datum and the regional information of each map datum, create and storage specification file, wherein, the data attribute corresponding with the display level of each map datum in each region is also comprised in the authority file of establishment.
In the present embodiment, load for the ease of follow-up map datum, first can gather the map datum of multiple region, such as, obtain the map datum in Tian An-men, Beijing, wherein, map datum can be obtain from different viewpoint height scopes or different engineer's scale scopes.
In the present embodiment, display level can be calculated to each map datum.Wherein, the display level of map datum can comprise: the 1st grade, the 2nd grade, 3rd level ..., the 20th grade.Wherein, the mode calculating the display level of map datum can comprise:
First, quaternary tree mode or other modes is utilized to calculate the 3d viewpoint altitude range of each map datum;
Secondly, according to the corresponding relation of each 3d viewpoint altitude range pre-set with display level, the display level of described 3d viewpoint altitude range is determined.
According to above-mentioned display level, when loading two-dimensional map, obtaining picture corresponding to this three-dimensional map data according to display level, being loaded as two-dimensional map.
Be display level, 3d viewpoint altitude range, the dimensional proportions chi scope that differently diagram data is corresponding below, as shown in table 1 below.
Table 1:
| Display level | 3d viewpoint altitude range | Dimensional proportions chi scope |
| 1st grade | 15000 kilometers | 400000000: 1 |
| 2nd grade | 10123 kilometers | 200000000: 1 |
| 3rd level | 7123 kilometers | 100000000: 1 |
| 4th grade | 6321 kilometers | 5000 ten thousand: 1 |
| 5th grade | 5522 kilometers | 2.5 thousand ten thousand: 1 |
| 6th grade | 3436 kilometers | 1.2 thousand ten thousand: 1 |
| 7th grade | 539 kilometers | 600 ten thousand: 1 |
| 8th grade | 305 kilometers | 1600000: 1 |
| 9th grade | 180 kilometers | 1550000: 1 |
| 10th grade | 133 kilometers | 800000: 1 |
| 11st grade | 100 kilometers | 400000: 1 |
| 12nd grade | 76.5 kilometers | 200000: 1 |
| 13rd grade | 58.2 kilometers | 100000: 1 |
| 14th grade | 23.5 kilometers | 50000: 1 |
| 15th grade | 9.6 kilometer | 2.5 ten thousand: 1 |
| 16th grade | 4 kilometers | 1.2 ten thousand: 1 |
| 17th grade | 2 kilometers | 6000：1 |
| 18th grade | 1.7 kilometer | 3000:1 |
| 19th grade | 1.5 kilometer | 1500:1 |
| 20th grade | 1 kilometer | 800：1 |
In the present embodiment, consider in actual application have some map datums to be that network is shared, and other map datums to be users exclusively enjoy, therefore, can manage the memory location of map datum.
In the present embodiment, determine the sharing mode of each map datum, be that the map datum that network is shared is stored in web data server by sharing mode, user can be directly stored in local computer by the method for loading or buffer memory when loading map datum.In order to ensure the security of the map datum that user exclusively enjoys, be that the map datum that user exclusively enjoys is stored in the physical memory of local computer by sharing mode.
In the present embodiment, base area domain information, display level create and storage specification file, wherein, also comprise the data attribute corresponding with the display level of each map datum in each region in the authority file of establishment.
Wherein, data attribute comprises: 1, data type, such as, and image data, altitude figures, vector data etc.; 2, memory location, such as, the physics of local computer is interior, web data server; 3, store path, namely arrives the path of the memory location of data; 4, title is accessed; 5, display Name.
Step 202: obtain map load instructions, load instructions determines target area information and target display level according to the map.
Such as, map load instructions is used to indicate the map datum that loaded targets region is Tian An-men, Beijing, target display level is 5 grades.
In the present embodiment, the executive agent of this step can be two-dimentional scheduler module, also can be three-dimensional scheduler module.If executive agent is two-dimentional scheduler module, so map load instructions is for loading two dimensional map data, otherwise map load instructions is for loading three-dimensional map data.
Step 203: obtain authority file, according to target area information and target display level, obtains target area information and target data attribute corresponding to target display level in authority file.
In the present embodiment, the mode obtaining authority file can be: working procedure comprises the store path of authority file.Such as, the store path of authority file is: D: wenjianjia1 guifanwenjian.Working procedure goes file under D dish to obtain authority file 1 time according to the store path of authority file.
If the memory location of authority file there occurs change, such as, the store path of authority file is changed to: E: wenjianjia1 wenjianjia2 guifanwenjian.Mode so for above-mentioned acquisition authority file cannot get authority file.
Therefore, in a preferred embodiment, the environmental variance that the store path of authority file is corresponding is set.In working procedure, this environmental variance can be x.When obtaining authority file, only need the value reading environmental variance.Such as, the value of x is: D: wenjianjia1 guifanwenjian, so according to the value of this x read corresponding store path D: wenjianjia1 guifanwenjian, obtain authority file.After the memory location of authority file changes, such as, the value of x is: E: wenjianjia1 wenjianjia2 guifanwenjian, so according to the value of this x read corresponding store path E: wenjianjia1 wenjianjia2 guifanwenjian, obtain authority file.
In the present embodiment, include each a large amount of regions in authority file, each region difference shows data attribute corresponding to level.Such as, according to target area information: Tian An-men, Beijing, target display level: 5 grades, to get in authority file corresponding data attribute, this data attribute got is the data type of instruction target map data, memory location, store path, access title and display Name.
In the present embodiment, when two-dimentional scheduler module carries out loading two-dimensional map, according to target area information and target display level, in authority file, obtain the data attribute accordingly corresponding to diagram data.
Step 204: according to the target data attribute loaded targets map datum got.
In the present embodiment, if target map data is two-dimensional map, so two-dimentional scheduler module needs according to the data type in target data attribute, loads the vector data that two-dimensional map is corresponding.The current two-dimensional map presented is the picture that Tian An-men, Beijing shows that level is 5 grades.
Step 205: when receiving two-dimentional three-dimensional conversion instruction, adds to target area information and target display level in two-dimentional three-dimensional conversion instruction, and three-dimensional for two dimension conversion instruction is sent to target dispatch module.
According in step 204, the target map data of current loading is two-dimensional map, so when receiving two-dimentional three-dimensional conversion instruction, need the three-dimensional map showing that two-dimensional map is corresponding, therefore, target area information and target display level are added in two-dimentional three-dimensional conversion instruction by two dimension scheduler module, and three-dimensional for two dimension conversion instruction is sent to target dispatch module, and this target dispatch module is three-dimensional scheduler module.
Step 206: target dispatch module, according to target area information and target display level, performs step 203-step 204, loads three-dimensional map data.
In the present embodiment, target dispatch module and three-dimensional scheduler module continue to obtain in authority file the target map data of target area information and three-dimensional map corresponding to target display level, and load.Due in step 201 for an identical map datum, its can corresponding three-dimensional viewpoint height scope and correspond to dimensional proportions chi scope, and the three-dimensional map of correspondence and two-dimensional map are same display level, therefore, according to target area information and target display level, the three-dimensional map loaded and two-dimensional map loaded by same map datum, thus ensure that the consistance of two-dimensional map and three-dimensional map display effect after conversion.
According to this programme, by precomputing the display level of each map datum in each region, and the regional information of data creates authority file with display level according to the map, when when recording map datum, in authority file, directly obtain the regional information of map datum to be loaded and show map datum corresponding to level, load map datum, eliminate the time gathering and calculate, improve the loading efficiency of map datum.
As shown in Figure 3, Figure 4, a kind of map datum charger based on GIS platform is embodiments provided.Device embodiment can pass through software simulating, also can be realized by the mode of hardware or software and hardware combining.Say from hardware view; as shown in Figure 3; for the embodiment of the present invention is based on a kind of hardware structure diagram of the map datum charger place equipment of GIS platform; except the processor shown in Fig. 3, internal memory, network interface and nonvolatile memory; in embodiment, the equipment at device place can also comprise other hardware usually, as the forwarding chip etc. of responsible process message.For software simulating, as shown in Figure 4, as the device on a logical meaning, be by the CPU of its place equipment, computer program instructions corresponding in nonvolatile memory is read operation in internal memory to be formed.The map datum charger 40 based on GIS platform that the present embodiment provides comprises:
First acquiring unit 401, for obtaining the map datum of each region;
Computing unit 402, for calculating the display level of each map datum;
Storage unit 403, for according to the display level of each map datum and the regional information of each map datum, create and storage specification file, wherein, in the described authority file of establishment, also comprise the data attribute corresponding with the display level of each map datum in each region;
Second acquisition unit 404, for obtaining map load instructions, determines target area information and target display level according to described map load instructions;
3rd acquiring unit 405, for obtaining authority file, according to described target area information and described target display level, obtains described target area information and target data attribute corresponding to described target display level in described authority file;
Loading unit 406, for according to described target data attribute loaded targets map datum.
Further,
Described storage unit 403, for storing each 3d viewpoint altitude range and the corresponding relation showing level;
Described computing unit 402, for calculating the 3d viewpoint altitude range of each map datum; According to the corresponding relation of each 3d viewpoint altitude range arranged with display level, determine the display level of described 3d viewpoint altitude range.
In an embodiment of the invention, as shown in Figure 5, the map datum charger based on GIS platform may further include:
Transmitting element 501, for when receiving two-dimentional three-dimensional conversion instruction, described target area information and described target display level are added in the three-dimensional conversion instruction of described two dimension, and three-dimensional for described two dimension conversion instruction is sent to target dispatch module, to make described target dispatch module according to described target area information and described target display level, perform described acquisition authority file.
Further, described storage unit 403, the environmental variance that the store path for storage specification file is corresponding;
Described 3rd acquiring unit 405, for reading the value of described environmental variance, the value according to the described environmental variance read is determined to obtain described authority file according to described store path by the described store path that described regulation file is corresponding.
Further, the data attribute in described authority file also comprises the memory location of described target map data, comprises further: determining unit 502, for determining the sharing mode of each map datum; Being that network is shared map datum and is stored in web data server by sharing mode, is the physical memory that map datum that user exclusively enjoys is stored to local computer by sharing mode.
The content such as information interaction, implementation between each unit in the said equipment, due to the inventive method embodiment based on same design, particular content can see in the inventive method embodiment describe, repeat no more herein.
It should be noted that, in this article, the relational terms of such as first and second and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element " being comprised " limited by statement, and be not precluded within process, method, article or the equipment comprising described key element and also there is other same factor.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that programmed instruction is relevant, aforesaid program can be stored in the storage medium of embodied on computer readable, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium in.
Finally it should be noted that: the foregoing is only preferred embodiment of the present invention, only for illustration of technical scheme of the present invention, be not intended to limit protection scope of the present invention.All any amendments done within the spirit and principles in the present invention, equivalent replacement, improvement etc., be all included in protection scope of the present invention.
Claims (10)
1. the map datum loading method based on GIS platform, it is characterized in that, obtain the map datum of each region, calculate the display level of each map datum, according to the display level of each map datum and the regional information of each map datum, create and storage specification file, wherein, in the described authority file of establishment, also comprise the data attribute corresponding with the display level of each map datum in each region; Comprise:
Obtain map load instructions, determine target area information and target display level according to described map load instructions;
Obtain authority file, according to described target area information and described target display level, in described authority file, obtain described target area information and target data attribute corresponding to described target display level;
According to described target data attribute loaded targets map datum.
2. method according to claim 1, is characterized in that, arrange each 3d viewpoint altitude range and the corresponding relation showing level, the display level of each map datum of described calculating, comprising:
Calculate the 3d viewpoint altitude range of each map datum;
According to the corresponding relation of each 3d viewpoint altitude range arranged with display level, determine the display level of described 3d viewpoint altitude range.
3. method according to claim 1, is characterized in that, comprises further:
When receiving two-dimentional three-dimensional conversion instruction, described target area information and described target display level are added in the three-dimensional conversion instruction of described two dimension, and three-dimensional for described two dimension conversion instruction is sent to target dispatch module, to make described target dispatch module according to described target area information and described target display level, perform described acquisition authority file.
4. method according to claim 1, is characterized in that,
Comprise further: the environmental variance that the store path of authority file is corresponding is set;
Described acquisition authority file, comprising: the value reading described environmental variance, and the value according to the described environmental variance read is determined to obtain described authority file according to described store path by the described store path that described regulation file is corresponding.
5., according to described method arbitrary in Claims 1-4, it is characterized in that,
Comprise further: the data attribute in described authority file also comprises the memory location of described target map data;
, comprise further before storage specification file in described establishment: the sharing mode of determining each map datum; Being that network is shared map datum and is stored in web data server by sharing mode, is the physical memory that map datum that user exclusively enjoys is stored to local computer by sharing mode.
6., based on a map datum charger for GIS platform, it is characterized in that, comprising:
First acquiring unit, for obtaining the map datum of each region;
Computing unit, for calculating the display level of each map datum;
Storage unit, for according to the display level of each map datum and the regional information of each map datum, create and storage specification file, wherein, in the described authority file of establishment, also comprise the data attribute corresponding with the display level of each map datum in each region;
Second acquisition unit, for obtaining map load instructions, determines target area information and target display level according to described map load instructions;
3rd acquiring unit, for obtaining authority file, according to described target area information and described target display level, obtains described target area information and target data attribute corresponding to described target display level in described authority file;
Loading unit, for according to described target data attribute loaded targets map datum.
7. the map datum charger based on GIS platform according to claim 6, is characterized in that,
Described storage unit, for storing each 3d viewpoint altitude range and the corresponding relation showing level;
Described computing unit, for calculating the 3d viewpoint altitude range of each map datum; According to the corresponding relation of each 3d viewpoint altitude range arranged with display level, determine the display level of described 3d viewpoint altitude range.
8. the map datum charger based on GIS platform according to claim 6, is characterized in that, comprise further:
Transmitting element, for when receiving two-dimentional three-dimensional conversion instruction, described target area information and described target display level are added in the three-dimensional conversion instruction of described two dimension, and three-dimensional for described two dimension conversion instruction is sent to target dispatch module, to make described target dispatch module according to described target area information and described target display level, perform described acquisition authority file.
9. the map datum charger based on GIS platform according to claim 6, is characterized in that,
Described storage unit, the environmental variance that the store path for storage specification file is corresponding;
Described 3rd acquiring unit, for reading the value of described environmental variance, the value according to the described environmental variance read is determined to obtain described authority file according to described store path by the described store path that described regulation file is corresponding.
10., according to the described map datum charger based on GIS platform arbitrary in claim 6 to 9, it is characterized in that,
Data attribute in described authority file also comprises the memory location of described target map data, comprises further: determining unit, for determining the sharing mode of each map datum; Being that network is shared map datum and is stored in web data server by sharing mode, is the physical memory that map datum that user exclusively enjoys is stored to local computer by sharing mode.
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| CN114166230A (en) * | 2021-11-30 | 2022-03-11 | 北京新兴华安智慧科技有限公司 | Data access method and device, electronic equipment and storage medium |
| CN114722131A (en) * | 2022-03-07 | 2022-07-08 | 海南乾唐视联信息技术有限公司 | Map checking method, map checking device, terminal equipment and storage medium |
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