CN117271545A - Multi-temporal expression system and method for geographic entity - Google Patents
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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
- G06F16/23—Updating
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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
- G06F16/22—Indexing; Data structures therefor; Storage structures
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- 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
- G06F16/24—Querying
- G06F16/245—Query processing
- G06F16/2458—Special types of queries, e.g. statistical queries, fuzzy queries or distributed queries
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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
- G06F16/24—Querying
- G06F16/248—Presentation of query results
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- 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 multi-temporal expression system and a method of a geographic entity, wherein a geographic entity updating module in the system updates historical geographic entity data to obtain latest geographic entity data; the geographic entity multi-time state storage module stores historical geographic entity data and latest geographic entity data into a database; the geographic entity query module is used for screening target geographic entity data from the database based on query conditions, wherein the target geographic entity data comprises target historical geographic entity data and target latest geographic entity data, and the target latest geographic entity data comprises first target latest entity data consistent with the target historical geographic entity data and second target latest entity data inconsistent with the target historical geographic entity data; the geographic entity multi-temporal visualization module is used for differentially displaying the first target latest entity data and the second target latest entity data. The invention realizes dynamic visual expression and multi-temporal differential comparison expression of the space-time process of the geographic entity.
Description
Technical Field
The invention relates to the technical field of basic mapping, in particular to a multi-temporal expression system and a multi-temporal expression method for geographic entities.
Background
Geographic entities are one of the main achievements of 'novel basic mapping', and how to visually express the characteristics of multi-tenses and the like is a current research hotspot. Wherein, the geographic entity refers to a natural feature or a humanoid facility which occupies a certain space position in the real world and has independent attribute or function. Geographic entities in the real world all have the process from generation to development until final death, and the information of the space and the attribute of the same geographic entity in different time dimensions is called multi-temporal characteristics of the geographic entity. In an information system, in order to intuitively reflect the time-space evolution process of a geographic entity, the specific content of the change of the geographic entity is found, and the multi-temporal characteristics of the geographic entity need to be visually expressed.
Currently, a static map mode is mainly adopted to perform visual expression on geographic entities, namely, static symbols are used for representing information of geographic entities at a certain historical time point, for example, different colors, sizes, shapes and the like are used for representing different data types and values. The time characteristics of the geographic entity are expressed by using a static map mode, only a series of static maps at different moments can be displayed, and the time-space evolution characteristics of the geographic entity are observed by adopting a manual comparison mode. The technical problems are as follows: only the information of the spatial position, the attribute and the like of the geographic entity at a certain fixed time point can be displayed. The evolution process of the geographic entity in the time period cannot be dynamically expressed, and the dynamic comparison expression of the change result is also lacking.
Therefore, there is a need to provide a multi-temporal expression system and method for geographic entities, which solve the above-mentioned problems.
Disclosure of Invention
In view of the foregoing, it is necessary to provide a multi-temporal expression system and method for geographic entities, which are used for solving the technical problems that in the prior art, the temporal characteristics of geographic entities are expressed by using a static map, so that the evolution process of geographic entities in a time period cannot be dynamically expressed, and the dynamic comparison expression of the change results cannot be performed.
In one aspect, the present invention provides a multi-temporal expression system for a geographic entity, comprising: the system comprises a geographic entity updating module, a geographic entity multi-temporal storage module, a geographic entity query module and a geographic entity multi-temporal visualization module;
the geographic entity updating module is used for updating the historical geographic entity data to obtain the latest geographic entity data;
the multi-time state geographic entity storage module is used for storing the historical geographic entity data and the latest geographic entity data into a database;
the geographic entity query module is used for screening target geographic entity data from the database based on query conditions, wherein the target geographic entity data comprises target historical geographic entity data and target latest geographic entity data, and the target latest geographic entity data comprises first target latest entity data consistent with the target historical geographic entity data and second target latest entity data inconsistent with the target historical geographic entity data;
the geographic entity multi-temporal visualization module is used for differentially displaying the first target latest entity data and the second target latest entity data.
In some possible implementations, the multi-temporal expression system of a geographic entity further includes a geographic entity symbol setting module;
the geographic entity symbol setting module is used for setting a first display style of the first target latest entity data and a second display style of the second target latest entity data;
the geographic entity multi-temporal visualization module is specifically configured to differentially display the first target latest entity data and the second target latest entity data based on the first display style and the second display style.
In some possible implementations, the geographic entity updating module includes an identification code setting unit and a geographic entity updating unit;
the identification code setting unit is used for setting a unique identification code for each geographic entity according to a preset rule;
the geographic entity updating unit is used for updating the historical geographic entity data according to the unique identification code to obtain the latest geographic entity data.
In some possible implementations, the geographic entity updating unit includes an updating requirement acquisition subunit and a data updating subunit;
the update demand acquisition subunit is configured to acquire an update demand of the historical geographic entity data, where the update demand includes a geographic entity to be updated and update content;
the data updating subunit is configured to obtain the unique identifier of the geographical entity to be updated, and update the historical geographical entity data based on the unique identifier of the geographical entity to be updated and the update content, so as to obtain the latest geographical entity data.
In some possible implementations, the database includes a geographic implementation library and a geographic entity history library; the multi-time state storage module of the geographic entity comprises a historical data storage unit and an action data storage unit;
the historical data storage unit is used for storing the historical geographic entity data to the geographic entity historical library;
the situation data storage unit is used for storing the latest geographic entity data to the geographic entity situation library.
In some possible implementations, the query condition is at least one of a unique identification code and a time interval of the geographic entity.
In some possible implementations, the second target latest entity data includes at least one of newly added geographic entity data, deleted geographic entity data, and modified geographic entity data; the second display style includes an added geographic entity display style representing the added geographic entity data, a deleted geographic entity display style, and a modified geographic entity display style.
In some possible implementations, the first display style, the new geographic entity display style, the deleted geographic entity display style, and the modified geographic entity display style include a symbol line type, a symbol color, and a transparency of a geographic entity.
In some possible implementations, the geographic entity multi-temporal visualization module includes a time acquisition unit and an animation display unit;
the time acquisition unit is used for determining a first generation time of the historical geographic entity data and a second generation time of the latest geographic entity data;
the animation display unit is used for acquiring historical data to be displayed and latest data to be displayed of the geographic entity to be displayed from the historical geographic entity data and the latest geographic entity data, and displaying the historical data to be displayed and the latest data to be displayed based on time axis sequence.
On the other hand, the invention also provides a multi-temporal expression method of the geographic entity, which comprises the following steps:
updating the historical geographic entity data to obtain the latest geographic entity data;
storing the historical geographic entity data and the latest geographic entity data into a database;
screening target geographic entity data from the database based on query conditions, wherein the target geographic entity data comprises target historical geographic entity data and target latest geographic entity data, and the target latest geographic entity data comprises first target latest entity data consistent with the target historical geographic entity data and second target latest entity data inconsistent with the target historical geographic entity data;
and differentially displaying the first target latest entity data and the second target latest entity data.
The beneficial effects of the implementation mode are that: the multi-temporal expression system of the geographic entity provided by the invention screens out target geographic entity data from a database based on query conditions by arranging a geographic entity query module, wherein the target geographic entity data comprises target historical geographic entity data and target latest geographic entity data, and the target latest geographic entity data comprises first target latest entity data consistent with the target historical geographic entity data and second target latest entity data inconsistent with the target historical geographic entity data; and then a geographic entity multi-temporal visualization module is arranged for differentially displaying the latest entity data of the first target and the latest entity data of the second target, namely: the dynamic changes of various geographic entities can be intuitively reproduced through the first target latest entity data and the second target latest entity data which are differentially displayed, the evolution process of the geographic entities is displayed, the capability of dynamic visual expression and multi-time differential contrast expression of the space-time process of the geographic entities is provided, the development and change reasons of the geographic entities are conveniently explored, and the value capability of extracting the space-time data is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following description will briefly explain the drawings needed in the description of the embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a multi-temporal expression system of a geographic entity according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a structure of an embodiment of a geographic entity updating unit according to the present invention;
FIG. 3 is a schematic view of an embodiment of a village administrative area at a first point in time according to the present invention;
FIG. 4 is a diagram illustrating an example of a village administrative area at a second point in time according to the present invention;
FIG. 5 is a diagram illustrating an example of a village administrative area at a third time point according to the present invention;
FIG. 6 is a diagram illustrating an administrative area of a village at a fourth time point according to an embodiment of the present invention;
FIG. 7 is a flowchart illustrating a method for multi-temporal expression of a geographic entity according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be understood that the schematic drawings are not drawn to scale. A flowchart, as used in this disclosure, illustrates operations implemented according to some embodiments of the present invention. It should be appreciated that the operations of the flow diagrams may be implemented out of order and that steps without logical context may be performed in reverse order or concurrently. Moreover, one or more other operations may be added to or removed from the flow diagrams by those skilled in the art under the direction of the present disclosure.
Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor systems and/or controller systems.
If any, the terms "first," "second," etc. are used merely for distinguishing between technical features, they are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in several embodiments of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
The multi-temporal value of the geographic entity is that the change process of the entity can be represented, and the trend, the sequence and the periodicity of the dynamic phenomenon in time are reflected. The expression mode of the static map can only express the state of a geographic entity at a certain time point, and can not express the dynamic evolution process. In order to solve the technical problem, the invention provides a multi-temporal expression system and a multi-temporal expression method for a geographic entity, which are respectively described below.
FIG. 1 is a schematic structural diagram of an embodiment of a multi-temporal expression system of a geographic entity according to the present invention, and as shown in FIG. 1, a multi-temporal expression system 10 of a geographic entity includes: the system comprises a geographic entity updating module 100, a geographic entity multi-temporal storage module 200, a geographic entity query module 300 and a geographic entity multi-temporal visualization module 400;
the geographic entity updating module 100 is configured to update historical geographic entity data to obtain latest geographic entity data;
the geographic entity multi-temporal storage module 200 is used for storing historical geographic entity data and latest geographic entity data into a database;
the geographic entity query module 300 is configured to screen target geographic entity data from a database based on query conditions, where the target geographic entity data includes target historical geographic entity data and target latest geographic entity data, and the target latest geographic entity data includes first target latest entity data consistent with the target historical geographic entity data and second target latest entity data inconsistent with the target historical geographic entity data;
the geographic entity multi-temporal visualization module 400 is configured to differentially display the first target latest entity data and the second target latest entity data.
Compared with the prior art, the multi-temporal expression system 10 of the geographic entity provided by the embodiment of the invention screens target geographic entity data from the database based on the query condition by setting the geographic entity query module 300, wherein the target geographic entity data comprises target historical geographic entity data and target latest geographic entity data, and the target latest geographic entity data comprises first target latest entity data consistent with the target historical geographic entity data and second target latest entity data inconsistent with the target historical geographic entity data; the geographic entity multi-temporal visualization module 400 is then configured to differentially display the first target latest entity data and the second target latest entity data, i.e.: the dynamic changes of various geographic entities can be intuitively reproduced through the first target latest entity data and the second target latest entity data which are differentially displayed, the evolution process of the geographic entities is displayed, the capability of dynamic visual expression and multi-time differential contrast expression of the space-time process of the geographic entities is provided, the development and change reasons of the geographic entities are conveniently explored, and the value capability of extracting the space-time data is improved.
It should be noted that: in some scenarios, the geographic entity undergoes multiple evolutions, and the historical geographic entity data includes multiple historical geographic entity sub-data in one-to-one correspondence with each evolution, namely: the history geographic entity data contains abundant multi-state history information, the history state of the geographic entity is traced back, and different history states are compared, so that the evolution rule and trend of the geographic entity can be perceived more intuitively. Therefore, in some embodiments of the present invention, the historical geographic entity sub-data corresponding to two evolution events adjacent in time should also be displayed differently, so that the multi-temporal expression system 10 for geographic entities provided in the embodiments of the present invention has an intuitive space-time difference effect, that is, when the historical states of the space-time data are traced back, the comparison of different historical states can more intuitively sense the change content of the geographic entities.
It should be understood that: the geographic entity is composed of one or more primitives, which are abstract representations of the real world, organized in the form of point primitives, line primitives, and face primitives in a computer. In order to more intuitively demonstrate the differentiation of the geographic entities, in some embodiments of the present invention, as shown in fig. 1, the multi-temporal expression system 10 of geographic entities further includes a geographic entity symbol setting module 500;
the geographic entity symbol setting module 500 is configured to set a first display style of the first target latest entity data and a second display style of the second target latest entity data;
the geographic entity multi-temporal visualization module 400 is specifically configured to differentially display the first target latest entity data and the second target latest entity data based on the first display style and the second display style.
According to the embodiment of the invention, the first target latest entity data and the second target latest entity data can be displayed in a differentiated mode based on the first display style and the second display style by setting the first display style and the second display style for the first target latest entity data and the second target latest entity data respectively.
Because the evolution process of the geographic entity comprises three types of adding, changing and deleting the geographic entity, in some embodiments of the invention, the second target latest entity data comprises at least one of adding the geographic entity data, deleting the geographic entity data and modifying the geographic entity data; the second display style includes an added geographic entity display style representing the added geographic entity data, a deleted geographic entity display style, and a modified geographic entity display style.
According to the embodiment of the invention, by setting the second display patterns including the newly-added geographic entity display patterns representing the newly-added geographic entity data, deleting the geographic entity display patterns and modifying the geographic entity display patterns, all evolution processes possibly occurring in the geographic entity can be displayed, and the comprehensiveness and the accuracy of multi-time expression of the geographic entity are improved.
In some embodiments of the present invention, the first display style, the new geographic entity display style, the deleted geographic entity display style, and the modified geographic entity display style include a symbol line type, a symbol color, and a transparency of the geographic entity.
It should be noted that: the first display style, the newly added geographic entity display style, the deleted geographic entity display style and the modified geographic entity display style can also be set by other parameters, so long as the first target latest entity data, the newly added geographic entity data, the deleted geographic entity data and the modified geographic entity data can be distinguished.
In a specific embodiment of the present invention, the symbol color is black, the transparency is 0, the symbol line type of the newly added geographic entity display style is a solid line, the symbol color is black, the transparency is 0, the symbol line type of the deleted geographic entity data is a broken line, the symbol color is black, the transparency is 50%, the symbol line type of the modified geographic entity data is a solid line, the symbol color is red, the transparency is 100%, the symbol line type of the first target latest entity data corresponding to the modified geographic entity data is a broken line, the symbol color is black, and the transparency is 50%.
To improve the convenience and speed of updating the historical geographic entity data, in some embodiments of the present invention, as shown in fig. 1, the geographic entity updating module 100 includes an identification code setting unit 110 and a geographic entity updating unit 120;
the identification code setting unit 110 is configured to set a unique identification code for each geographic entity according to a preset rule;
the geographic entity updating unit 120 is configured to update the historical geographic entity data according to the unique identifier to obtain the latest geographic entity data.
According to the embodiment of the invention, the unique identification code is set for each geographic entity by the identification code setting unit 110, and the geographic entity data of the corresponding geographic entity can be obtained through the unique identification code in the process of updating and displaying the historical geographic entity data, so that the accuracy and the efficiency of updating the historical geographic entity data are improved.
In some embodiments of the present invention, as shown in fig. 2, the geographic entity updating unit 120 includes an update demand acquisition subunit 121 and a data updating subunit 122;
the update requirement obtaining subunit 121 is configured to obtain an update requirement of the historical geographic entity data, where the update requirement includes a geographic entity to be updated and an update content;
the data updating subunit 122 is configured to obtain the unique identifier of the geographic entity to be updated, and update the historical geographic entity data based on the unique identifier of the geographic entity to be updated and the update content, so as to obtain the latest geographic entity data.
In order to avoid the technical problems of data confusion and errors in the database when the historical geographic entity data and the latest geographic entity data are stored in the unified database, in some embodiments of the present invention, as shown in fig. 1, the geographic entity multi-temporal storage module 200 includes a historical data storage unit 210 and an active data storage unit 220;
the historical data storage unit 210 is configured to store historical geographic entity data into a geographic entity history repository;
the presence data storage unit 220 is configured to store the latest geographic entity data to the geographic implementation presence library.
According to the embodiment of the invention, the historical geographic entity data and the latest geographic entity data are respectively stored in different databases, so that the historical geographic entity data and/or the latest geographic entity data can be independently and accurately extracted and analyzed.
In some embodiments of the present invention, the query condition in the step geographic entity querying module 300 is at least one of a unique identification code and a time interval of the geographic entity.
Namely: the evolution process of a certain geographic entity in a certain time range or the evolution process of all geographic entities in a certain time range can be queried.
In order to more intuitively observe the change process of the geographic entity, in some embodiments of the present invention, as shown in fig. 1, a geographic entity multi-temporal visualization module 400 includes a time acquisition unit 410 and an animation display unit 420;
the time acquisition unit 410 is configured to determine a first generation time of the historical geographic entity data and a second generation time of the latest geographic entity data;
the animation display unit 420 is configured to obtain historical data to be displayed and latest data to be displayed of a geographic entity from the historical geographic entity data and the latest geographic entity data, and display the historical data to be displayed and the latest data to be displayed based on a time axis sequence.
According to the embodiment of the invention, the historical data to be displayed and the latest data to be displayed are displayed based on the time axis sequence, so that the time axis animation display is realized, the evolution process of the geographic entity can be obtained through the change of the images in the front frame animation and the rear frame animation, and the evolution process is more visual.
Wherein the first generation time may be determined based on a time code carried in the historical geo-entity data, in particular, the number of bits of the time code may be 10 bits, for example: 2023072515. likewise, the second generation time may be determined based on a time code carried in the most recent geo-entity data.
In a specific embodiment of the present invention, fig. 3-6 are schematic diagrams showing the changing process of the administrative region of a village at different time points between 2010 and 2022, wherein fig. 3 is the administrative region of the village at 10 th of 2010, fig. 4 is the administrative region of the village at 5 th of 2015, fig. 5 is the administrative region of the village at 16 th of 2019, fig. 6 is the administrative region of the village at 23 th of 2022, and fig. 3-6, wherein two administrative regions are added at 5 th of 2015 compared with 10 th of 2010, three administrative regions are added at 16 th of 2019 compared with 5 th of 2015, one administrative region is modified at 23 th of 2022 compared with 16 th of 2019.
As can be seen from fig. 3-6: the multi-temporal expression system 10 of the geographic entity provided by the embodiment of the invention has a continuous dynamic play effect, namely, the geographic entity forms are continuously expressed in a certain time change sequence, so that the dynamic changes of various geographic entities can be intuitively simulated and reproduced, and the evolution process of the geographic entities is displayed. The method is convenient for exploring the reasons of development and change, and further improves the value capability of extracting space-time data; and the method has the visual space-time difference effect, namely when the historical state of the space-time data is traced back, the comparison of different historical states is performed, the visual sign is used for performing outstanding visual display on the change information, and the change content of the geographic entity can be visually perceived.
The embodiment of the invention also provides a multi-temporal expression method of the geographic entity, as shown in fig. 7, comprising the following steps:
s701, updating historical geographic entity data to obtain latest geographic entity data;
s702, storing historical geographic entity data and latest geographic entity data into a database;
s703, screening target geographic entity data from a database based on query conditions, wherein the target geographic entity data comprises target historical geographic entity data and target latest geographic entity data, and the target latest geographic entity data comprises first target latest entity data consistent with the target historical geographic entity data and second target latest entity data inconsistent with the target historical geographic entity data;
s704, the first target latest entity data and the second target latest entity data are displayed in a differentiated mode.
The multi-temporal expression method of the geographic entity provided by the embodiment can implement the technical scheme described in the multi-temporal expression system embodiment of the geographic entity, and the specific implementation principle of each flow can be referred to the corresponding content in the multi-temporal expression system embodiment of the geographic entity, which is not repeated here.
Those skilled in the art will appreciate that all or part of the flow of the methods of the embodiments described above may be accomplished by way of a computer program stored in a computer readable storage medium, instructing the relevant hardware. The computer readable storage medium is a magnetic disk, an optical disk, a read-only memory or a random access memory.
The above description of the multi-temporal expression system and method of the geographic entity provided by the present invention applies specific examples to illustrate the principles and embodiments of the present invention, and the above examples are only used to help understand the method and core ideas of the present invention; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the ideas of the present invention, the present description should not be construed as limiting the present invention in summary.
Claims (10)
1. A multi-temporal expression system for a geographic entity, comprising: the system comprises a geographic entity updating module, a geographic entity multi-temporal storage module, a geographic entity query module and a geographic entity multi-temporal visualization module;
the geographic entity updating module is used for updating the historical geographic entity data to obtain the latest geographic entity data;
the multi-time state geographic entity storage module is used for storing the historical geographic entity data and the latest geographic entity data into a database;
the geographic entity query module is used for screening target geographic entity data from the database based on query conditions, wherein the target geographic entity data comprises target historical geographic entity data and target latest geographic entity data, and the target latest geographic entity data comprises first target latest entity data consistent with the target historical geographic entity data and second target latest entity data inconsistent with the target historical geographic entity data;
the geographic entity multi-temporal visualization module is used for differentially displaying the first target latest entity data and the second target latest entity data.
2. The multi-temporal expression system of a geographic entity of claim 1, wherein the multi-temporal expression system of a geographic entity further comprises a geographic entity symbol setting module;
the geographic entity symbol setting module is used for setting a first display style of the first target latest entity data and a second display style of the second target latest entity data;
the geographic entity multi-temporal visualization module is specifically configured to differentially display the first target latest entity data and the second target latest entity data based on the first display style and the second display style.
3. The multi-temporal expression system of a geographic entity of claim 1, wherein the geographic entity updating module comprises an identification code setting unit and a geographic entity updating unit;
the identification code setting unit is used for setting a unique identification code for each geographic entity according to a preset rule;
the geographic entity updating unit is used for updating the historical geographic entity data according to the unique identification code to obtain the latest geographic entity data.
4. A multi-temporal expression system of a geographic entity as in claim 3 wherein the geographic entity update unit comprises an update demand acquisition subunit and a data update subunit;
the update demand acquisition subunit is configured to acquire an update demand of the historical geographic entity data, where the update demand includes a geographic entity to be updated and update content;
the data updating subunit is configured to obtain the unique identifier of the geographical entity to be updated, and update the historical geographical entity data based on the unique identifier of the geographical entity to be updated and the update content, so as to obtain the latest geographical entity data.
5. The multi-temporal expression system of geographic entities of claim 1, wherein the database comprises a geographic entity implementation library and a geographic entity history library; the multi-time state storage module of the geographic entity comprises a historical data storage unit and an action data storage unit;
the historical data storage unit is used for storing the historical geographic entity data to the geographic entity historical library;
the situation data storage unit is used for storing the latest geographic entity data to the geographic entity situation library.
6. The multi-temporal expression system of a geographic entity of claim 1, wherein the query condition is at least one of a unique identification code and a time interval of the geographic entity.
7. The multi-temporal expression system of geographic entities of claim 2, wherein the second target most recent entity data comprises at least one of newly added geographic entity data, deleted geographic entity data, and modified geographic entity data; the second display style includes an added geographic entity display style representing the added geographic entity data, a deleted geographic entity display style, and a modified geographic entity display style.
8. The multi-temporal representation system of a geographic entity of claim 7, wherein the first display style, the newly added geographic entity display style, the deleted geographic entity display style, and the modified geographic entity display style comprise a symbol line type, a symbol color, and a transparency of a geographic entity.
9. The multi-temporal expression system of a geographic entity of claim 1, wherein the geographic entity multi-temporal visualization module comprises a time acquisition unit and an animation presentation unit;
the time acquisition unit is used for determining a first generation time of the historical geographic entity data and a second generation time of the latest geographic entity data;
the animation display unit is used for acquiring historical data to be displayed and latest data to be displayed of the geographic entity to be displayed from the historical geographic entity data and the latest geographic entity data, and displaying the historical data to be displayed and the latest data to be displayed based on time axis sequence.
10. A method for multi-temporal expression of a geographic entity, comprising:
updating the historical geographic entity data to obtain the latest geographic entity data;
storing the historical geographic entity data and the latest geographic entity data into a database;
screening target geographic entity data from the database based on query conditions, wherein the target geographic entity data comprises target historical geographic entity data and target latest geographic entity data, and the target latest geographic entity data comprises first target latest entity data consistent with the target historical geographic entity data and second target latest entity data inconsistent with the target historical geographic entity data;
and differentially displaying the first target latest entity data and the second target latest entity data.
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| CN202311532715.7A CN117271545A (en) | 2023-11-17 | 2023-11-17 | Multi-temporal expression system and method for geographic entity |
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| CN101231642A (en) * | 2007-08-27 | 2008-07-30 | 中国测绘科学研究院 | Space-time database administration method and system |
| CN101593208A (en) * | 2009-07-09 | 2009-12-02 | 浙江大学 | A kind of ancestor ground space-time data storage means of the dynamic correction extended model based on ground state |
| CN111475565A (en) * | 2020-04-21 | 2020-07-31 | 北京邮电大学 | Visual target historical geographic information data playback system and method |
| US20230091252A1 (en) * | 2021-11-29 | 2023-03-23 | Beijing Baidu Netcom Science Technology Co., Ltd. | Method for processing high-definition map data, electronic device and medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101231642A (en) * | 2007-08-27 | 2008-07-30 | 中国测绘科学研究院 | Space-time database administration method and system |
| CN101593208A (en) * | 2009-07-09 | 2009-12-02 | 浙江大学 | A kind of ancestor ground space-time data storage means of the dynamic correction extended model based on ground state |
| CN111475565A (en) * | 2020-04-21 | 2020-07-31 | 北京邮电大学 | Visual target historical geographic information data playback system and method |
| US20230091252A1 (en) * | 2021-11-29 | 2023-03-23 | Beijing Baidu Netcom Science Technology Co., Ltd. | Method for processing high-definition map data, electronic device and medium |
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