CN116756261A - GIS data processing method based on relational database management tool - Google Patents
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Abstract
The application provides a GIS data processing method based on a relational database management tool, which comprises the following steps: traversing the space data in the acquired space database, and displaying the space data in a browser embedded in a database management tool based on webgis visualization processing; responding to the interaction process, obtaining a result data set, converting the result data set into a file in a GeoGSON format and analyzing the file; writing SQL files based on the analyzed files; and updating the current spatial database by using SQL sentences. According to the database processing method provided by the application, the embedded webgis system is used for visualizing the space data, so that the space elements can be edited and the database can be put into storage in real time. The system is not limited by an operation environment, can be directly accessed through a browser, edits space elements through the browser and stores the edited result in real time, and can greatly improve the efficiency of space data editing and storing without a third-party space data editing platform.
Description
Technical Field
The application relates to the technical field of databases, in particular to a GIS data processing method based on a relational database management tool.
Background
GIS (geographic information system ) is the main body of development of a spatial database, and the use of spatial database technology to store data is a current requirement for GIS application and development, and how to effectively manage mass data has become one of the most urgent problems faced by GIS.
Specifically, the third party management tools (Arcgis, supersmap, qgis) that are currently in most use on the market suffer from the following drawbacks:
1) Space data editing is carried out through the existing tool, the data is imported into the space database after the editing is completed, the data is needed to be reloaded from the database when the editing is needed next time, and the data is imported after the editing is completed, so that time and labor are consumed, and the efficiency is low;
2) Installing the third party tool requires higher performance, use cost and technical requirements of the machine, and a common machine reflects low speed by using the third party tool.
Disclosure of Invention
The application aims to solve the technical problem of simplifying the space data editing process and realizing real-time editing and warehousing. In view of the above, the present application provides a GIS data processing method based on a relational database management tool.
The technical scheme adopted by the application is that the GIS data processing method based on the relational database management tool comprises the following steps:
step S1, traversing the acquired space data in the space database, displaying the space data in a browser embedded in a database management tool based on webgis visualization processing, wherein the visualization processing is used for realizing the interaction process of a user on the space data;
step S2, responding to the interaction process, obtaining a result data set, and converting the result data set into a file in a GeoGSON format;
step S3, analyzing the file in the GeoGSON format, and writing an SQL file based on the analyzed file to finish converting the space data into SQL sentences which can be identified by a database;
and S4, updating the current space database by using the SQL statement.
In one embodiment, in the step S1, the spatial data includes geospatial data, the geospatial data includes location information and attribute information, the attribute information includes gid, scalerank data, and the location information includes longitude and latitude data of a coordinate point of the corresponding element.
In one embodiment, in the step S1, the location information is displayed in the form of a point, a line, and a plane in a browser embedded in the database management tool.
In one embodiment, the visualization process includes: an edit interactive function is assigned to the coordinate point of the corresponding element of each loaded position information by using the onEachFeature function of the leaf.
In one embodiment, in the step S2, the interaction process includes at least one of deleting, adding, and moving coordinate points.
In one embodiment, the method further comprises:
and placing the row data in the space data into GeoGSON so that the data which generates the interaction process have a unique corresponding detailed address rowid in the result data set.
In one embodiment, the method further comprises:
in response to each interaction of the spatial data, a corresponding set of row data is generated in the GeoGSON-format file.
The application also provides a GIS data processing device based on the relational database management tool, which comprises:
the data reading module is configured to traverse a pre-configured space database, acquire space data, display the space data in a browser embedded in a database management tool based on webgis visualization processing, wherein the visualization processing is used for realizing the interaction process of a user on the space data;
an edit data module configured to implement the interaction process;
the data editing result conversion module is configured to respond to the interaction process, acquire a result data set and convert the result data set into a file in a GeoGSON format; analyzing the file in the GeoGSON format, and writing an SQL file based on the analyzed file to finish converting the space data into an SQL statement which can be identified by a database;
a database updating module configured to update the current spatial database using the SQL statement
Another aspect of the present application also provides an electronic device including: a memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor performs the steps of a GIS data processing method based on a relational database management tool as claimed in any one of the preceding claims.
Another aspect of the present application also provides a computer storage medium having stored thereon a computer program which when executed by a processor performs the steps of a GIS data processing based on a relational database management tool as described in any one of the above.
By adopting the technical scheme, the application has at least the following advantages:
according to the database processing method provided by the application, the embedded webgis system is used for visualizing the space data, so that the space elements can be edited and the database can be put into storage in real time. The system is not limited by an operation environment, can be directly accessed through a browser, edits space elements through the browser and stores the edited result in real time, and can greatly improve the efficiency of space data editing and storing without a third-party space data editing platform.
Drawings
FIG. 1 is a flow chart of a GIS data processing method based on a relational database management tool according to an embodiment of the present application;
FIG. 2 is a diagram of a database management tool framework of an embedded webgis system according to an embodiment of the present application;
FIG. 3 is a schematic view of a space element editing effect according to an embodiment of the present application;
FIG. 4 is a flowchart of converting space element editing result data into database recognizable sentences according to an embodiment of the present application;
FIG. 5 is a diagram illustrating the effects of visual editing of database data according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a GIS data processing device based on a relational database management tool according to an embodiment of the present application;
fig. 7 is a schematic diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to further describe the technical means and effects adopted by the present application for achieving the intended purpose, the following detailed description of the present application is given with reference to the accompanying drawings and preferred embodiments.
It will be understood that the terms "comprises," "comprising," "includes," "including," "having," "containing," and/or "including," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Furthermore, when a statement such as "at least one of the following" appears after a list of features that are listed, the entire listed feature is modified instead of modifying a separate element in the list. Furthermore, when describing embodiments of the present application, the use of "may" means "one or more embodiments of the present application. Also, the term "exemplary" is intended to refer to an example or illustration.
As used herein, the terms "substantially," "about," and the like are used as terms of a table approximation, not as terms of a table level, and are intended to illustrate inherent deviations in measured or calculated values that would be recognized by one of ordinary skill in the art.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The steps of the method flow described in the specification and the flow chart shown in the drawings of the specification are not necessarily strictly executed according to step numbers, and the execution order of the steps of the method may be changed. Moreover, some steps may be omitted, multiple steps may be combined into one step to be performed, and/or one step may be decomposed into multiple steps to be performed.
The steps of the method flow described in the specification and the flow chart shown in the drawings of the specification are not necessarily strictly executed according to step numbers, and the execution order of the steps of the method may be changed. Moreover, some steps may be omitted, multiple steps may be combined into one step to be performed, and/or one step may be decomposed into multiple steps to be performed.
In a first embodiment of the present application, as shown in fig. 1, a GIS data processing method based on a relational database management tool includes the following specific steps:
step S1, traversing the acquired space data in the space database, displaying the space data in a browser embedded in a database management tool based on webgis visualization processing, wherein the visualization processing is used for realizing the interaction process of a user on the space data;
step S2, responding to the interaction process, obtaining a result data set, and converting the result data set into a file in a GeoGSON format;
step S3, analyzing the file in the GeoGSON format, and writing an SQL file based on the analyzed file to finish converting the space data into SQL sentences which can be identified by a database;
and S4, updating the current space database by using the SQL statement.
The method provided by this embodiment will be described in detail below with reference to fig. 1 and 2.
Step S1, traversing the acquired space data in the space database, displaying the space data in a browser embedded in a database management tool based on webgis visualization processing, wherein the visualization processing is used for realizing the interaction process of a user on the space data.
In this embodiment, the spatial data includes geospatial data including position information and attribute information, the attribute information includes gid, scalerank data, and the position information includes longitude and latitude data of a coordinate point of a corresponding element.
In this embodiment, the spatial data is displayed to the embedded browser of the database management tool through webgis visualization technology. After a button is clicked by a management tool (trigger event), html supporting WEBGIS is compiled, wherein GIS data is compiled into a variable array of Javascript in the html, if a plurality of columns of GIS data exist, unified push is displayed in the variable array, and the GIS data is presented in the form of elements. The tool uses an embedded method to embed html into the tool, so that GIS data presentation can be completed.
In one possible implementation, an edit interactive function may be assigned to the coordinate point of the corresponding element of each loaded position information using the onEachFeature function of the leaf.
Specifically, the position information is displayed in the form of points, lines and planes in a browser embedded in the database management tool.
Further, when WEBGIS is embedded, the row data (field is tip, which contains all column data of non-geometric type) in the database data can be put into GeoGSON. Thus, in the edited JSON file, there will be a unique detailed address rowid for the edited data. Through the processing, the page clicking element can display corresponding data, and subsequent interaction and editing processing is facilitated.
And step S2, responding to the interaction process, acquiring a result data set, and converting the result data set into a file in a GeoGSON format.
Illustratively, the interaction process may be at least one of deleting, adding, moving the coordinate points.
Specifically, in the embedded WEBGIS system, an editing module is provided, an editing tool is opened, an element layer is clicked, coordinate points of the element layer are obtained, the coordinate points are dragged, and the coordinate point information is changed, so that the purpose of editing elements is achieved; the editing module is used for editing the space data in the space database after visual display, clicking the visualized space element layer to obtain the coordinate point of the layer, clicking the 'point' to delete, connecting the adjacent two points by themselves, automatically adding the coordinate point when the moving coordinate point exceeds a certain range, and clicking the editing button.
The interactive process of data editing processes the spatial data of the elements, and the attribute data is not processed.
It is understood that the data editing result is a result data set of all elements edited at one time, and a plurality of elements can be edited at one time.
Corresponding to the row data in the database data in step S1, each operation in the interaction process generates a set of corresponding row data in the corresponding GeoGSON.
And S3, analyzing the file in the GeoGSON format, and writing an SQL file based on the analyzed file to finish converting the space data into an SQL statement which can be identified by a database.
Specifically, a result dataset of the edited element is obtained, the result dataset is converted into a file in a GeoJSON format, and each action in the editing process forms a row of data in the GeoJSON file, wherein the GeoJSON file contains functions used by a relational database, a GIS array and a list row unique key id.
Further, the GeoJSON file is parsed. Writing an SQL file, and converting the SQL file into an SQL sentence which can be identified by a database.
And analyzing the update.json file into SQL sentences. The following is an example:
gid is the table's column name, in the update statement, "type" is the primary key of where "MultiLineStng is the geometry type, used for format storage in the data table
The coordinates are arrays for data of the geometry type.
The file does not contain table names and field names, because the table names are the current table; the geometric field in a table of the general service has only one column, and the columns of the geometric type can be checked by comparing the columns of the data table.
The final SQL statement is:
update table name set field name = MULTIPOINT ((114.56951266069335)
65.5009239125414),(99.4883580423949820.408259315991742),
(101.9635466875619364.62975811205244),(127.12822244860263
53.45669408397319),(102.1821977897244349.3499213616005))where gid＝1
And S4, updating the current space database by utilizing SQL sentences.
That is, the modified data is replaced with the original data in the database table through SQL sentences, so that the real-time warehousing function of the editing result is realized.
Compared with the prior art, the embodiment has at least the following advantages:
1) By utilizing the method provided by the application, the style, layer control, interactive operation and the like of the map can be freely customized according to own requirements and preferences.
2) Has cross-platform and cross-device compatibility.
3) The data management tool adopts a webgis system constructed by a leaf program, can run on different platforms and devices, and ensures the consistency of user experience.
4) Lightweight and fast: the application is embedded in the management tool, has small file volume and high loading speed, and can be used by common computers. It focuses on the core map function without excessive redundancy, making it excellent in terms of performance and loading time.
The second embodiment of the present application is an application example based on the above-described first embodiment.
The application takes the coastline data of the world as an example to construct a database management tool for editing space data and warehousing in real time.
In this embodiment, world coastline data stored in a database is read and parsed, so that the world coastline data is visually displayed in a browser, the world coastline data mainly includes attribute data and spatial data, the attribute data mainly includes data such as gid, scalerank, and the spatial data mainly includes longitude and latitude data of element coordinate points;
in this embodiment, an editing event can be given to each loaded element by using the onEachFeature function of the leaf, clicking the editing function, clicking the coastline, enabling the selected coastline to enter an editing state, displaying a plurality of coordinate points on the coastline entering the editing state, as shown in fig. 3, and achieving the purpose of editing the coastline by deleting, adding and moving the coordinate points;
after the editing is completed, clicking a save button to obtain a result data set of the edited coastline, converting the result data into GeoJSON format data, converting the obtained result data into sentences which can be identified by the database by using the flow of FIG. 4, replacing the result data with corresponding data in the original database table to realize the updating of the database, and the updated data visualization information can refer to FIG. 5.
According to a third embodiment of the present application, corresponding to the first embodiment, the present embodiment introduces a GIS data processing apparatus based on a relational database management tool, as shown in fig. 6, including the following components:
the data reading module is configured to traverse a pre-configured space database, acquire space data, display the space data in a browser embedded in a database management tool based on webgis visualization processing, wherein the visualization processing is used for realizing the interaction process of a user on the space data;
an edit data module configured to implement the interaction process;
the data editing result conversion module is configured to respond to the interaction process, acquire a result data set and convert the result data set into a file in a GeoGSON format; analyzing the file in the GeoGSON format, and writing an SQL file based on the analyzed file to finish converting the space data into an SQL statement which can be identified by a database;
and the database updating module is configured to update the current space database by using the SQL statement.
A fourth embodiment of the present application, an electronic device, as shown in fig. 7, can be understood as a physical device, including a processor and a memory storing instructions executable by the processor, when the instructions are executed by the processor, performs the following operations:
step S1, traversing the acquired space data in the space database, displaying the space data in a browser embedded in a database management tool based on webgis visualization processing, wherein the visualization processing is used for realizing the interaction process of a user on the space data;
step S2, responding to the interaction process, obtaining a result data set, and converting the result data set into a file in a GeoGSON format;
step S3, analyzing the file in the GeoGSON format, and writing an SQL file based on the analyzed file to finish converting the space data into SQL sentences which can be identified by a database;
and S4, updating the current space database by using the SQL statement.
In the fifth embodiment of the present application, the flow of the GIS data processing method based on the relational database management tool in the present embodiment is the same as that in the first, second or third embodiment, and the difference is that in engineering implementation, the present embodiment may be implemented by means of software plus a necessary general hardware platform, and of course may also be implemented by hardware, but in many cases, the former is a preferred implementation. Based on such understanding, the method of the present application may be embodied in the form of a computer software product stored on a storage medium (e.g., ROM/RAM, magnetic disk, optical disk) comprising instructions for causing an apparatus to perform the method of the embodiments of the present application.
While the application has been described in connection with specific embodiments thereof, it is to be understood that these drawings are included in the spirit and scope of the application, it is not to be limited thereto.
Claims (10)
1. The GIS data processing method based on the relational database management tool is characterized by comprising the following steps of:
step S1, traversing the acquired space data in the space database, displaying the space data in a browser embedded in a database management tool based on webgis visualization processing, wherein the visualization processing is used for realizing the interaction process of a user on the space data;
step S2, responding to the interaction process, obtaining a result data set, and converting the result data set into a file in a GeoGSON format;
step S3, analyzing the file in the GeoGSON format, and writing an SQL file based on the analyzed file to finish converting the space data into SQL sentences which can be identified by a database;
and S4, updating the current space database by using the SQL statement.
2. The method according to claim 1, wherein in the step S1, the spatial data includes geospatial data, the geospatial data includes location information and attribute information, the attribute information includes gid, scalerank data, and the location information includes longitude and latitude data of a coordinate point of a corresponding element.
3. The method for GIS data processing based on relational database management tool according to claim 2, wherein in step S1, the location information is displayed in the form of points, lines, and planes in a browser embedded in the database management tool.
4. A GIS data processing method based on a relational database management tool according to claim 3, wherein the visualization process comprises: an edit interactive function is assigned to the coordinate point of the corresponding element of each loaded position information by using the onEachFeature function of the leaf.
5. The method for GIS data processing based on relational database management tool according to claim 4, wherein in step S2, the interaction process includes at least one of deleting, adding, and moving coordinate points.
6. The method for GIS data processing based on a relational database management tool according to claim 1, wherein the method further comprises:
and placing the row data in the space data into GeoGSON so that the data which generates the interaction process have a unique corresponding detailed address rowid in the result data set.
7. The method for GIS data processing based on a relational database management tool according to claim 6, wherein the method further comprises:
in response to each interaction of the spatial data, a corresponding set of row data is generated in the GeoGSON-format file.
8. A GIS data processing apparatus based on a relational database management tool, comprising:
the data reading module is configured to traverse a pre-configured space database, acquire space data, display the space data in a browser embedded in a database management tool based on webgis visualization processing, wherein the visualization processing is used for realizing the interaction process of a user on the space data;
an edit data module configured to implement the interaction process;
the data editing result conversion module is configured to respond to the interaction process, acquire a result data set and convert the result data set into a file in a GeoGSON format; analyzing the file in the GeoGSON format, and writing an SQL file based on the analyzed file to finish converting the space data into an SQL statement which can be identified by a database;
and the database updating module is configured to update the current space database by using the SQL statement.
9. An electronic device, the electronic device comprising: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the relational database management tool based GIS data processing method according to any one of claims 1 to 7.
10. A computer storage medium, wherein a computer program is stored on the computer storage medium, and when executed by a processor, the computer program implements the steps of the relational database management tool based GIS data processing method according to any one of claims 1 to 7.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117131125A (en) * | 2023-10-23 | 2023-11-28 | 瀚高基础软件股份有限公司 | Space raster data visualization system, equipment and medium of database management tool |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117131125A (en) * | 2023-10-23 | 2023-11-28 | 瀚高基础软件股份有限公司 | Space raster data visualization system, equipment and medium of database management tool |
| CN117131125B (en) * | 2023-10-23 | 2024-02-02 | 瀚高基础软件股份有限公司 | Space raster data visualization system, equipment and medium of database management tool |
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