CN104915401B - GIS information updating method and system - Google Patents
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Abstract
The present invention relates to a kind of GIS information updating method and systems, which comprises when detecting information update event, judges that display area needs whether the information content of GIS information to be shown is more than presupposed information threshold value；If being more than, the GIS information of the data point of preset number is chosen from the GIS information；The GIS information of selection is loaded into the display area, generates GIS map.Implement the present invention, the GIS information of selection can be loaded into the display area when there is a large amount of GIS information to need to update to GIS, without loading the GIS information of institute's display in need, GIS map is generated, GIS information update efficiency can be effectively improved and is reduced the information load time.
Description
Technical field
The present invention relates to geographic information system technology fields, more particularly to a kind of GIS information updating method and system.
Background technique
In communication planning design field, it is often necessary to be reconnoitred to base station information and its ambient conditions, need to look into
See that current region or the base station details in other geographical locations, traditional survey need to carry PC (personal
Computer, personal computer) check GIS information, need to carry PC, and the end PC not can guarantee real-time update data letter
Breath.
With the development of mobile internet, connect by removable, the light and handy and real-time network of the mobile terminals such as mobile phone
Characteristics, the map data mining platform in GIS (GIS-Geographic Information System) by checking the mobile intelligent terminals such as mobile phone such as logical can obtain in real time
The geographical environments information such as the base station in current region or other geographical locations, target structures.
But GIS-Geographic Information System needs to handle a large amount of spatial positional information, and the processing of the mobile terminals such as mobile phone is fast
Degree is slow and memory is small, when there is a large amount of map data mining platform to need to cover in GIS, the loading velocities of the mobile terminals such as mobile phone compared with
Slowly, time-consuming more, lead to GIS information update low efficiency.
Summary of the invention
Based on this, it is necessary to aiming at the problem that GIS information update low efficiency of above-mentioned mobile terminal, provide a kind of GIS letter
Cease update method and system.
A kind of GIS information updating method, comprising the following steps:
When detecting information update event, judge that display area needs whether the information content of GIS information to be shown is more than pre-
If information threshold；
If being more than, the GIS information of the data point of preset number is chosen from the GIS information；
The GIS information of selection is loaded into the display area, generates GIS map.
A kind of GIS information update system, comprising:
Threshold value judgment module, for when detecting information update event, judging that display area needs GIS information to be shown
Information content whether be more than presupposed information threshold value；
Information chooses module, when being more than the presupposed information threshold value for the information content in the GIS information, from described
The GIS information of the data point of preset number is chosen in GIS information；
Map loading module generates GIS map for the GIS information of selection to be loaded into the display area.
Above-mentioned GIS information updating method and system detect information update event and need GIS to be shown in display area
When the information content of information is more than presupposed information threshold value, the GIS information of the data point of preset number is chosen from the GIS information；
The GIS information of selection is loaded into the display area, generates GIS map.It can be arrived there is a large amount of GIS information to need to update
When GIS, without load institute display in need GIS information, only the GIS information of selection need to be loaded into the display area, give birth to
At GIS map, GIS information update efficiency can be effectively improved and reduced the information load time.
Detailed description of the invention
Fig. 1 is the flow diagram of GIS information updating method first embodiment of the present invention；
Fig. 2 is the flow diagram of GIS information updating method second embodiment of the present invention；
Fig. 3 is the structural schematic diagram of GIS information update system first embodiment of the present invention；
Fig. 4 is the structural schematic diagram of GIS information update system second embodiment of the present invention.
Specific embodiment
Although the step in the present invention is arranged with label, it is not used to limit the precedence of step, unless
Based on the execution of the order or certain step that specify step needs other steps, otherwise the relative rank of step is
It is adjustable.
Referring to Fig. 1, Fig. 1 is the flow diagram of GIS information updating method first embodiment of the present invention.
GIS information updating method described in present embodiment, it may include following steps:
Step S101 when detecting information update event, judges that the information content of display area need GIS information to be shown is
No is more than presupposed information threshold value.
Step S102 chooses the GIS information of the data point of preset number if being more than from the GIS information.
The GIS information of selection is loaded into the display area, generates GIS map by step S103.
Present embodiment detects information update event and needs the information content of GIS information to be shown super in display area
When crossing presupposed information threshold value, the GIS information of the data point of preset number is chosen from the GIS information；By the GIS information of selection
It is loaded into the display area, generates GIS map.It can be when there is a large amount of GIS information that update is needed to arrive GIS, without loading
The GIS information of selection is only loaded into the display area by the GIS information of display in need, is generated GIS map, can effectively be mentioned
High GIS information update efficiency and reduction information load time.
Wherein, for step S101, it can be display area that the information update event, which can be prompted or be instructed for information update,
Longitude, the latitude variation of GIS information to be shown are needed, GIS information to be shown can be needed to increase, delete or replacement for display area
Deng.The display area is the region for showing GIS map.The GIS information includes the environmental information of each location point, is such as built
It builds, vegetation, the information such as base station.
Preferably, can be needed by comparing the display area number of the data point in GIS information to be shown with it is described
Preset number, to judge that display area needs whether the information content of GIS information to be shown is more than presupposed information threshold value, corresponding institute
Stating preset information threshold is the preset number；Can also by the corresponding longitude range in other display areas and latitude scope or
Person display area need GIS information to be shown accounts for the ratio of the corresponding GIS information of entire GIS map, to judge that display area needs
Whether the information content of GIS information to be shown is more than presupposed information threshold value, and the corresponding preset information threshold is preset
Longitude range and latitude scope or ratio.When needing to show the corresponding GIS information of entire GIS map such as the display area, sentence
Determining display area needs whether the information content of GIS information to be shown is more than presupposed information threshold value.
In one embodiment, judging display area needs whether data point sum in GIS information to be shown is more than default
The step of data threshold N the following steps are included:
Obtain the corresponding longitude range in the display area and latitude scope.
GIS information corresponding with the longitude range and the latitude scope is downloaded from GIS server.
Judge whether data point sum is more than the preset number in the GIS information of downloading, if being more than, described in judgement
The information content of GIS information is more than presupposed information threshold value.
GIS information is stored in advance in GIS server, can further decrease the requirement to terminal memory by the present embodiment, into
And memory is saved, by the corresponding longitude range in display area and latitude scope, it can quickly determine the information content of the GIS information
It whether is more than presupposed information threshold value.
Preferably, the corresponding longitude range in the display area and latitude scope are that the display area need to be to be shown
The longitude and latitude of GIS information.
It in other embodiments, can be preparatory by the corresponding GIS information of entire GIS map in the area of required display in advance
Terminal is downloaded to from GIS server, according to the corresponding longitude range in display area and latitude scope, in real time from downloading in advance
GIS information corresponding with the longitude range and the latitude scope is chosen in GIS information.When the GIS information in GIS server
When update, then re-download the GIS information of update.
Further, the GIS map list in GIS server can be shown, corresponding different area is shown, such as:
(1) Beijing San Litun base station data；
(2) Guangzhou Zhongshan District base station data；
(3) Nanshan District of Shenzhen City base station data；
Corresponding GIS map list, the area selection GIS information downloading of the display according to needed for terminal, such as Guangzhou Zhong Shan
Area's base station data, including a plurality of GIS information, for indicating the geographical location of each base station.
In another embodiment, judging display area needs whether the information content of GIS information to be shown is more than default letter
Before the step of ceasing threshold value, comprising the following steps:
Obtain the display area currently corresponding longitude range and latitude scope.
Judge obtain longitude range and dimensional extent respectively with the display area before preset period of time corresponding warp
It spends range and whether latitude scope is identical.
If it is not, then detecting information update event.
The present embodiment can judge whether to detect information by the variation of the corresponding longitude and latitude range in the display area
Update event, quickly to update GIS information.
For step S102, it is preferable that the preset number can be 400, lower than data included in entire GIS map
Point total amount.The data point can be the coordinate of GIS locational information figure position.
Further, before choosing data point, identical data point can be searched in advance, is only stored in identical data point
One, others are deleted, and identical data point is made only to retain one, avoid repeating to choose identical data point.
It in one embodiment, will downloading if data point sum is less than the preset number in the GIS information of downloading
GIS information be loaded into the display area, generate GIS map.
In another embodiment, the step of GIS information of the data point of preset number is chosen from the GIS information is also
The following steps are included:
Text information in the GIS information is hidden.
The GIS information of the data point of preset number is chosen from the GIS information after hiding text information.
The present embodiment, by the Text information hiding in GIS information, can further decrease display area needs data to be shown
Amount improves information update efficiency.
Wherein, the text information is written language information, such as text, symbol.
Preferably, the step of choosing the GIS information of N number of data point from the GIS information after hiding text information packet
Include following steps:
The data of the preset number are randomly selected from the GIS information after hiding text information by random function
The GIS information of point.
In other embodiments, a data point can be chosen every one section of pre-determined distance by equidistant selection method
GIS information, until choosing the data point for arriving the preset number.Other technologies hand that can also be usual by those skilled in the art
Section chooses the information of data point, keeps original distribution of GIS map.
For step S103, can be added by GIS information of the usual technological means of those skilled in the art to selection
It carries.
In one embodiment, the GIS information of selection is loaded into the display area, before generating GIS map, also wrapped
Include following steps:
Generate graphical symbol corresponding with the picture of identified geographic information is used in the GIS information.
The corresponding picture in the GIS information is replaced with the graphical symbol of generation.
The present embodiment replaces picture with the graphical symbol of drafting, and can further display region needs information content to be shown, mentions
High information update efficiency.
Preferably, the geographical location information such as longitude and latitude can be acquired by data acquisition applications or GPS device, be then introduced into
The database of GIS server, these geographic information datas are the data source of GIS map figure layer.Can in the management platform of terminal,
The information of default GIS figure layer, the shape for each geographical location point such as to be shown, size, color etc., and GIS can be believed
Breath carries out classification displaying, for example according to work construction completion status classification, completion indicates that unfinished uses circle table with triangle
Show, or complete indicated with green, it is unfinished to be indicated with red.Such setting can satisfy different scene demands.
It in other embodiments, can be after downloading to need GIS information to be shown, i.e., in generation and the GIS information
The corresponding graphical symbol of picture for identified geographic information.It is replaced with the graphical symbol of generation corresponding in the GIS information
Picture
In another embodiment, the step of GIS information of selection being loaded into the display area, generating GIS map
Later, further comprising the steps of:
If detecting the trigger event to any data point in the GIS map, show that the information of the data point is shown
Frame, to push other GIS information of the data point.
The present embodiment can push other not shown GIS information of each data point to user or respond the enquirement of user, so that
GIS information shows more diversification.
The GIS information updating method of the present embodiment can run on the mobile terminals such as smart phone, load number by part
According to GIS information (figure layer) showing on mobile terminals is accelerated, the occupancy of mobile terminal resource is reduced, mobile terminal is accelerated
The operation of GIS and information loading velocity.
Referring to Fig. 2, Fig. 2 is the flow diagram of GIS information updating method second embodiment of the present invention.
GIS information updating method and first embodiment described in present embodiment the difference is that: from the GIS
In information choose preset number data point GIS information the step of the following steps are included:
Step S201 obtains the Hash codes of the GIS information of each data point in the GIS information.
The identical GIS information of Hash codes is divided into an information collection by step S202, concentrates selection N number of from each information
The GIS information of data point, N are natural number.
Step S203 judges whether the quantity for the corresponding data point of GIS information chosen is more than the preset number.
Step S204 chooses the GIS of the data point of the preset number if being more than again from the GIS information of selection
Information.
The present embodiment can quickly filter out the GIS information of the data point of preset data by the Hash codes of GIS information, into
The load of row GIS map improves GIS information update efficiency.
Preferably, the Hash codes of GIS information can be calculated by hash algorithm customary in the art.It can be by customary in the art
Technological means choose data point.
Further, N can be 4 or other numerical value.
In other embodiments, can need the information content of GIS information to be shown in display area is more than presupposed information threshold
When value, the text information in the GIS information is hidden, obtains each data point in the GIS information after hiding text information
GIS information Hash codes；The identical GIS information of Hash codes is divided into an information collection, concentrates selection N number of from each information
The GIS information of data point, N are natural number；Whether the quantity for judging the corresponding data point of GIS information chosen is more than described default
Number；If being more than, the GIS information of the data point of the preset number is chosen again from the GIS information of selection.
Referring to Fig. 3, Fig. 3 is the structural schematic diagram of GIS information update system first embodiment of the present invention.
GIS information update system described in present embodiment, it may include threshold value judgment module 100, information choose module 200
With map loading module 300, in which:
Threshold value judgment module 100, for when detecting information update event, judging that display area needs GIS to be shown
Whether the information content of information is more than presupposed information threshold value.
Information chooses module 200, when being more than the presupposed information threshold value for the information content in the GIS information, from institute
State the GIS information that the data point of preset number is chosen in GIS information.
Map loading module 300 generates GIS map for the GIS information of selection to be loaded into the display area.
Present embodiment detects information update event and needs the information content of GIS information to be shown super in display area
When crossing presupposed information threshold value, the GIS information of the data point of preset number is chosen from the GIS information；By the GIS information of selection
It is loaded into the display area, generates GIS map.It can be when there is a large amount of GIS information that update is needed to arrive GIS, without loading
The GIS information of selection is only loaded into the display area by the GIS information of display in need, is generated GIS map, can effectively be mentioned
High GIS information update efficiency and reduction information load time.
Wherein, for threshold value judgment module 100, the information update event can be prompted or be instructed for information update, can be
Display area needs the longitude of GIS information to be shown, latitude variation, GIS information to be shown can be needed to increase, delete for display area
It removes or replaces.The display area is the region for showing GIS map.
Preferably, can be needed by comparing the display area number of the data point in GIS information to be shown with it is described
Preset number, to judge that display area needs whether the information content of GIS information to be shown is more than presupposed information threshold value, corresponding institute
Stating preset information threshold is the preset number；Can also by the corresponding longitude range in other display areas and latitude scope or
Person display area need GIS information to be shown accounts for the ratio of the corresponding GIS information of entire GIS map, to judge that display area needs
Whether the information content of GIS information to be shown is more than presupposed information threshold value, and the corresponding preset information threshold is preset
Longitude range and latitude scope or ratio.When needing to show the corresponding GIS information of entire GIS map such as the display area, sentence
Determining display area needs whether the information content of GIS information to be shown is more than presupposed information threshold value.
In one embodiment, threshold value judgment module 100 may also include range acquisition module, information downloading module and data
Judgment module, in which:
The range obtains module for obtaining the corresponding longitude range in the display area and latitude scope.
The information downloading module is used to download from GIS server corresponding with the longitude range and the latitude scope
GIS information.
The data judgment module is used to judge in the GIS information of downloading whether data point sum to be more than the present count
Mesh determines that the information content of the GIS information is more than presupposed information threshold value if being more than.
GIS information is stored in advance in GIS server, can further decrease the requirement to terminal memory by the present embodiment, into
And memory is saved, by the corresponding longitude range in display area and latitude scope, it can quickly determine the information content of the GIS information
It whether is more than presupposed information threshold value.
Preferably, the corresponding longitude range in the display area and latitude scope are that the display area need to be to be shown
The longitude and latitude of GIS information.
It in other embodiments, can be preparatory by the corresponding GIS information of entire GIS map in the area of required display in advance
Terminal is downloaded to from GIS server, according to the corresponding longitude range in display area and latitude scope, in real time from downloading in advance
GIS information corresponding with the longitude range and the latitude scope is chosen in GIS information.When the GIS information in GIS server
When update, then re-download the GIS information of update.
Further, the GIS map list in GIS server can be shown, corresponding different area is shown, such as:
(1) Beijing San Litun base station data；
(2) Guangzhou Zhongshan District base station data；
(3) Nanshan District of Shenzhen City base station data；
Corresponding GIS map list, the area selection GIS information downloading of the display according to needed for terminal, such as Guangzhou Zhong Shan
Area's base station data, including a plurality of GIS information, for indicating the geographical location of each base station.
In another embodiment, the GIS information update system may also include update event detection module, be used for:
Obtain the display area currently corresponding longitude range and latitude scope.
Judge obtain longitude range and dimensional extent respectively with the display area before preset period of time corresponding warp
It spends range and whether latitude scope is identical.
If it is not, then detecting information update event.
The present embodiment can judge whether to detect information by the variation of the corresponding longitude and latitude range in the display area
Update event, quickly to update GIS information.
Module 200 is chosen for information, it is preferable that the preset number can be 400, lower than being wrapped in entire GIS map
The data point total amount contained.The data point can be the coordinate of GIS locational information figure position.
Further, before choosing data point, identical data point can be searched in advance, is only stored in identical data point
One, others are deleted, and identical data point is made only to retain one, avoid repeating to choose identical data point.
It in one embodiment, will downloading if data point sum is less than the preset number in the GIS information of downloading
GIS information be loaded into the display area, generate GIS map.
In another embodiment, information is chosen module 200 and be can also be used in:
Text information in the GIS information is hidden.
The GIS information of the data point of preset number is chosen from the GIS information after hiding text information.
The present embodiment, by the Text information hiding in GIS information, can further decrease display area needs data to be shown
Amount improves information update efficiency.
Wherein, the text information is written language information, such as text, symbol.
Preferably, information chooses module 200 and can also be used to believe by random function from the GIS after hiding text information
The GIS information of the data point of the preset number is randomly selected in breath.
In other embodiments, information selection module 200 can also be by equidistant selection method, every one section of pre-determined distance
The GIS information an of data point is chosen, until choosing the data point for arriving the preset number.Those skilled in the art can also be passed through
Usual other technologies means choose the information of data point.
It, can be by the usual technological means of those skilled in the art to the GIS information of selection for map loading module 300
It is loaded.
In one embodiment, the GIS information update system may also include symbol replacement module, for that will choose
GIS information be loaded into the display area, before generating GIS map:
Generate graphical symbol corresponding with the picture of identified geographic information is used in the GIS information.
The corresponding picture in the GIS information is replaced with the graphical symbol of generation.
The present embodiment replaces picture with the graphical symbol of drafting, and can further display region needs information content to be shown, mentions
High information update efficiency.
Preferably, corresponding picture is the consistent picture of corresponding graphical symbol.
Preferably, the geographical location information such as longitude and latitude can be acquired by data acquisition applications or GPS device, be then introduced into
The database of GIS server, these geographic information datas are the data source of GIS map figure layer.Can in the management platform of terminal,
The information of default GIS figure layer, the shape for each geographical location point such as to be shown, size, color etc., and GIS can be believed
Breath carries out classification displaying, for example according to work construction completion status classification, completion indicates that unfinished uses circle table with triangle
Show, or complete indicated with green, it is unfinished to be indicated with red.Such setting can satisfy different scene demands.
It in other embodiments, can be after downloading to need GIS information to be shown, i.e., in generation and the GIS information
The corresponding graphical symbol of picture for identified geographic information.It is replaced with the graphical symbol of generation corresponding in the GIS information
Picture
In another embodiment, the GIS information update system may also include info push module, for that will select
After the step of GIS information taken is loaded into the display area, generates GIS map:
If detecting the trigger event to any data point in the GIS map, show that the information of the data point is shown
Frame, to push other GIS information of the data point.
The present embodiment can push other not shown GIS information of each data point to user or respond the enquirement of user, so that
GIS information shows more diversification.
The GIS information updating method of the present embodiment can run on the mobile terminals such as smart phone, load number by part
According to GIS information (figure layer) showing on mobile terminals is accelerated, the occupancy of mobile terminal resource is reduced, mobile terminal is accelerated
The operation of GIS and information loading velocity.
Referring to Fig. 4, Fig. 4 is the structural schematic diagram of GIS information update system second embodiment of the present invention.
GIS information update system and first embodiment described in present embodiment the difference is that: the information
Choosing module further includes that Hash codes obtain module 410, information collection module 420, quantity judgment module 430, data point selection module
440, in which:
Hash codes obtain the Hash codes that module 410 is used to obtain the GIS information of each data point in the GIS information.
Information collection module 420 is used to the identical GIS information of Hash codes being divided into an information collection, concentrates from each information
The GIS information of N number of data point is chosen, N is natural number.
Quantity judgment module 430 is used for, and judges whether the quantity for the corresponding data point of GIS information chosen is more than described pre-
If number.
Data point is chosen module 440 and is used for when the quantity of the data point of selection is more than the preset number, then from selection
GIS information in choose again the preset number data point GIS information.
The present embodiment can quickly filter out the GIS information of the data point of preset data by the Hash codes of GIS information, into
The load of row GIS map improves GIS information update efficiency.
Preferably, the Hash codes of GIS information can be calculated by hash algorithm customary in the art.It can be by customary in the art
Technological means choose data point.
Further, N can be 4 or other numerical value.
In other embodiments, can need the information content of GIS information to be shown in display area is more than presupposed information threshold
When value, the text information in the GIS information is hidden, obtains each data point in the GIS information after hiding text information
GIS information Hash codes；The identical GIS information of Hash codes is divided into an information collection, concentrates selection N number of from each information
The GIS information of data point, N are natural number；Whether the quantity for judging the corresponding data point of GIS information chosen is more than described default
Number；If being more than, the GIS information of the data point of the preset number is chosen again from the GIS information of selection.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of GIS information updating method, which comprises the following steps:
When detecting information update event, judge that display area needs whether the information content of GIS information to be shown is more than default letter
Cease threshold value；
If being more than, the GIS information of the data point of preset number is chosen from the GIS information, the data point is GIS information
The coordinate of place map location；
The GIS information of selection is loaded into the display area, generates GIS map；
It is described to judge that display area needs whether the information content of GIS information to be shown is more than presupposed information threshold value, including pass through ratio
The display area needs the number and the preset number of the data point in GIS information to be shown, to judge display area
Whether the information content for needing GIS information to be shown is more than presupposed information threshold value, and the presupposed information threshold value is the present count
Mesh.
2. GIS information updating method according to claim 1, which is characterized in that judge that display area needs GIS to be shown
The step of whether data point sum is more than preset data threshold value N in information the following steps are included:
Obtain the corresponding longitude range in the display area and latitude scope；
GIS information corresponding with the longitude range and the latitude scope is downloaded from GIS server；
Judge whether data point sum is more than the preset number in the GIS information of downloading, if being more than, determines the GIS letter
The information content of breath is more than presupposed information threshold value.
3. GIS information updating method according to claim 2, which is characterized in that if data point is total in the GIS information of downloading
Number is less than the preset number, then the GIS information of downloading is loaded into the display area, generates GIS map.
4. GIS information updating method according to claim 1, which is characterized in that choose present count from the GIS information
The step of GIS information of purpose data point, is further comprising the steps of:
Text information in the GIS information is hidden；
The GIS information of the data point of preset number is chosen from the GIS information after hiding text information.
5. GIS information updating method according to claim 1, which is characterized in that choose present count from the GIS information
The step of GIS information of purpose data point the following steps are included:
Obtain the Hash codes of the GIS information of each data point in the GIS information；
The identical GIS information of Hash codes is divided into an information collection, the GIS letter for choosing N number of data point is concentrated from each information
Breath, N is natural number；
Whether the quantity for judging the corresponding data point of GIS information chosen is more than the preset number；
If being more than, the GIS information of the data point of the preset number is chosen again from the GIS information of selection.
6. GIS information updating method according to claim 1, which is characterized in that judge that display area needs GIS to be shown
Before the step of whether information content of information is more than presupposed information threshold value, comprising the following steps:
Obtain the display area currently corresponding longitude range and latitude scope；
Judge obtain longitude range and dimensional extent respectively with the display area before preset period of time corresponding longitude model
It encloses with whether latitude scope is identical；
If it is not, then detecting information update event.
7. GIS information updating method according to claim 1, which is characterized in that be loaded into the GIS information of selection described
Display area, further comprising the steps of before generating GIS map:
Generate graphical symbol corresponding with the picture of identified geographic information is used in the GIS information；
The corresponding picture in the GIS information is replaced with the graphical symbol of generation.
8. GIS information updating method as claimed in any of claims 1 to 7, which is characterized in that by the GIS of selection
It is further comprising the steps of after the step of information is loaded into the display area, generates GIS map:
If detecting the trigger event to any data point in the GIS map, the information display frame of the data point is shown, with
Push other GIS information of the data point.
9. a kind of GIS information update system characterized by comprising
Threshold value judgment module, for when detecting information update event, judging that display area needs the letter of GIS information to be shown
Whether breath amount is more than presupposed information threshold value；
Information chooses module, when being more than the presupposed information threshold value for the information content in the GIS information, believes from the GIS
The GIS information of the data point of preset number is chosen in breath, the data point is the coordinate of GIS locational information figure position；
Map loading module generates GIS map for the GIS information of selection to be loaded into the display area；
Wherein, the threshold value judgment module further includes for needing in GIS information to be shown by comparing the display area
The number of data point and the preset number, to judge that display area needs whether the information content of GIS information to be shown is more than pre-
If information threshold, the presupposed information threshold value is the preset number.
10. GIS information update system according to claim 9, which is characterized in that the threshold value judgment module further includes model
It encloses and obtains module, information downloading module sum number it is judged that module, in which:
The range obtains module for obtaining the corresponding longitude range in the display area and latitude scope；
The information downloading module is used to download GIS corresponding with the longitude range and the latitude scope from GIS server
Information；
The data judgment module is used to judge in the GIS information of downloading whether data point sum to be more than the preset number, if
It is more than then to determine that the information content of the GIS information is more than presupposed information threshold value.
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| CN105303637B (en) * | 2015-11-03 | 2018-05-18 | 用友网络科技股份有限公司 | Coordinate points upload and automatic inspection device and method based on mobile application |
| CN110245201A (en) * | 2019-05-30 | 2019-09-17 | 武汉智云集思技术有限公司 | Data rasterizing processing method, equipment and storage medium based on geographical location |
| CN110704460B (en) * | 2019-09-02 | 2021-07-09 | 广州市城市规划勘测设计研究院 | Space-time big data collection system and method |
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