CN114064028A - Spatial analysis modeling method based on online visual editing - Google Patents
Spatial analysis modeling method based on online visual editing Download PDFInfo
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Abstract
The invention relates to the field of geospatial analysis, in particular to a spatial analysis modeling method based on online visual editing. The method comprises the following steps: s1, adding and connecting analysis data and analysis tools on line, constructing operators and combining the operators into an operator workflow; s2, processing and analyzing a table in each element class, grid, file or working space in the data in an iterative mode; s3, arranging operators and displaying a workflow sequence by using a chart; s4, operating the operators step by step until the selected operator step is performed, or operating the whole operator; s5, setting the operator as a geographic processing tool, sharing the operator script, and storing the operator script and other operators in an operator library for use; and S6, generating parameter links to automatically execute operator operation. The invention solves the problems of complicated processing process or steps, high technical requirement and strict requirement on personnel quality of the existing geographic data.
Description
Technical Field
The invention relates to the field of geospatial analysis, in particular to a spatial analysis modeling method based on online visual editing.
Background
Currently, the GIS technology is based on geographic space, and provides various spatial and dynamic geographic information in real time by using a geographic model analysis method, and is a computer technology system for geographic research and geographic decision service. In the processing of geographic spatial data GIS, spatial analysis is the basic theory and technology of the analysis, simulation, prediction and regulation process. The establishment and application of a large number of space-time models for spatial analysis are important means for geoscience analysis of regional or global geographic problems, and are new challenges and opportunities, wherein spatial data processing, spatial data analysis and map visualization are three main technical links of a GIS, and in the process of processing spatial data, data processing needs to be more streamlined and automated through some more advanced methods and skills, and a new spatial data processing means needs to be established from existing or extracted data, so that the data collection, spatial analysis and decision making processes are integrated into a common information flow tool.
The GIS has a powerful spatial analysis function, can reveal important information or general rules hidden behind spatial data, and is particularly important when different analysis methods and implementation modes are selected for different applications. Therefore, the method is a process for discovering and mining spatial knowledge, is a geographic data analysis technology based on the spatial layout of geographic objects, is a process for extracting information and knowledge which is hidden in a large amount of incomplete, impure, fuzzy and random data and is unknown by people in advance but is potentially useful, and increasingly requires a GIS (geographic information system) to be capable of integrating tools for automatically completing various complex functions of spatial analysis, scientific data analysis, management and the like.
The prior GIS space analysis modeling tool is more biased to carry out local offline processing and operation, is limited by the access of a local machine or a certain server resource range, urges to generate a space analysis modeling mode of online visual editing regardless of place and time, utilizes an online editing technology to expand and perfect the requirements of the GIS, can greatly facilitate users to carry out online inquiry, operation, processing, GIS editing sharing and other various information dynamic combinations and collaborative processing and analysis of space data all the time, realizes the abstraction of the space and attribute data of different sources into the same internal data model, carries out statistics and mapping on the attribute data, carries out operations such as triangularization and geometric grid construction on the geometric data related to the space, or establishes different projection systems and coordinate conversion according to different types of applications, binds the attribute data on the constructed geometric primitives, the GIS server side is displayed in a common GIS platform and provides efficient interactive operation, which is an important task for integrating a GIS developed geographic information analysis system, and a user can conveniently analyze and process data by browsing and accessing a visual result of the GIS server side.
The geographic information system GIS is a system for delineating and characterizing the earth and other geographic elements, thereby displaying and analyzing spatially registered information. The spatial analysis is the core and soul of the GIS, and is one of the main signs that the GIS is different from a general information system, CAD or electronic map system. Spatial analysis is a quantitative study of geospatial phenomena, the conventional ability of which is to manipulate spatial data into different forms and extract its underlying information. The spatial analysis mainly mines the potential information of the spatial targets through the joint analysis of the spatial data and the spatial model, and the basic information of the spatial targets is not the spatial position, distribution, form, distance, orientation, topological relation and the like of the spatial targets, wherein the distance, orientation and topological relation form the spatial relation of the spatial targets, and the spatial relation is the spatial characteristic among geographic entities and can be used as the basis of data organization, query, analysis and reasoning. By dividing the geospatial objects into different types of points, lines, faces, the morphological structure of these different types of objects can be obtained. Combining the spatial data and the attribute data of the spatial object, a number of task-specific spatial calculations and analyses can be performed.
The GeoScene is a platform with comprehensive GIS functions, is widely applied to the surveying and mapping industry, and plays an important role in aspects of data editing, data processing and data base building, geographic information analysis, GIS application service and the like. When the GeoScene is utilized to carry out actual production operations such as basic geospatial data processing, extremely rich geoscience data processing tools provided by a GeoScene platform can be used frequently, and the tools can be generally called in a tool box. The system is used for completing various geographic spatial analysis, GIS data processing and other works, such as an analysis tool, a conversion tool, a drawing tool, a data management tool, a spatial statistic tool and the like. However, in an actual production process, the requirements for data processing are often complex. The method can not be directly realized by individual system tools, so that a plurality of programmers often adopt programming languages such as VB, C + +, C # and the like to carry out secondary development on a GeoScene platform to form various specially customized production tools or software with strong function pertinence. In addition, however, the GeoScene also provides a model generator tool, which is a graphical modeling tool capable of constructing a geographical processing workflow and a script, can help production operators to autonomously solve many complex GIS tasks without complex programming, and can automate and streamline many productions by using the model generator tool, thereby improving the efficiency of data processing and ensuring the quality of data processing. Thus, for workers who are familiar with GeoScene but do not understand secondary development, the model generator tool is one of the options in production.
The model generator in GeoScene is a visual modeling tool, and also can be said to be an interactive visual programming technology, and provides a graphical modeling framework, and can express a specific modeling process by using an intuitive graphical language to achieve the effect of simplifying the design and implementation of a complex space processing model. The model generator tool can combine various analysis processing tools and data together through flow to customize a set of suitable operation tools, and each time the tools are updated and edited, the tools can be saved and rerun. The model in the model generator tool is displayed by a schema of a flow chart, which links a series of data and processes. To create functions and procedures that can address a particular problem.
The GIS data processing tools of the model generator tool include all the toolsets in the tool box, and can also be models, script customization tools or other system tools. The input data and the output data are of various types, and may be a raster data set or a vector data set (shape and cove/age). Different spatial processing tools require different input data and produce different output data. The modeling is written and connected by scripts, the connection is an indispensable element in the model, the relation between the specified operation and the data is connected, therefore, the elements which meet the conditions can be connected, and if the elements which are not suitable are connected, the model can prompt error information. Only by organically connecting various elements can a complete graphic model be formed.
A series of user desktop system components provided by GeoScene at present well inherits the strong capabilities of data management, drawing, space analysis and the like of traditional desktop software, the application range of a desktop GIS is expanded by sharing application programs with other people, a user can process daily tasks by using special workflows and tools, service application programs are used for integrating service flows, and the functions of task workflows meeting specific service requirements by using configurable application programs and the like are realized.
In the prior art, the process or steps for processing geographic data are too complicated, the requirements of each part of a combination tool on an operating system are different, excessive condition screening is performed on batch processing of a large amount of data, a file server structure is usually adopted in the existing system, the processing function completely depends on a client, the working efficiency is low, when multiple clients perform concurrent operation, multiple backups exist in the data, and the integrity and consistency of the data are difficult to guarantee; a large amount of data is frequently transmitted, network congestion is easily caused, system performance is reduced, and cost is high: if the GIS usage requirements of the user are limited to general functions, expensive professional GIS software is equipped at each client, which causes huge waste and the desktop system is usually complex to operate: the method needs professional foundation and long-term training, is not suitable for enterprise-level and popular application, has high technical requirements and strict requirements on quality of personnel, is time-consuming and labor-consuming in development, delays long time in the middle link of the associated program, and influences the final effect and operation time of analysis execution.
Disclosure of Invention
The invention provides a spatial analysis modeling method based on online visual editing, and aims to solve the problems that the existing geographic data processing process or steps are too complicated, the technical requirements are high, and the requirements on personnel quality are harsh.
The invention provides a space analysis modeling method based on online visual editing, which comprises the following steps:
s1, adding and connecting analysis data and analysis tools on line, constructing operators and combining the operators into an operator workflow;
s2, processing and analyzing a table in each element class, grid, file or working space in the data in an iterative mode;
s3, arranging operators and displaying a workflow sequence by using a chart;
s4, operating the operators step by step until the selected operator step is performed, or operating the whole operator;
s5, setting the operator as a geographic processing tool, sharing the operator script, and storing the operator script and other operators in an operator library for use;
and S6, generating parameter links to automatically execute operator operation.
As a further improvement of the present invention, the step S1 specifically includes the steps of:
s11, analysis data are selected as input items independently, analysis tools used in the data analysis and preparation processes are combined with the analysis data through links corresponding to the analysis tools, and the analysis data are connected in series through a flow chart to create operators and operator workflows.
As a further improvement of the present invention, the step S1 constructs operators and combines them into a model representation of an operator workflow, which is represented by the steps of:
s12, a series of data processing tools or spatial analysis tools are connected in series to form a schematic diagram, the output of one process is used as the input of the other process, parameter links of corresponding tools are generated in a visualized mode, and operator operation is executed automatically.
As a further improvement of the present invention, in step S1, the operator is formed by creating operator elements, and the operator elements include: a geographic processing tool for performing a plurality of operations on geographic data or tabular data; the operator comprises a variable, wherein elements used for storing values or quoting data in the operator comprise a data variable and a value variable; a connector for connecting data and values to the tool, the connector arrow showing the direction of execution of the geographic process; groups, visual elements for grouping related tools together, and folding or unfolding to hide or display the tools.
As a further refinement of the invention, the types of connectors include data, environment, preconditions and feedback.
As a further improvement of the present invention, the operators arranged in step S3 include a single operator and a combined operator, and the combined operator is a combination obtained by arranging.
As a further improvement of the invention, the layout process of the combination operator comprises the following steps:
a1. when an operator is created, fixing an input node, and inputting flowfile flow during arrangement;
a2. setting an output node, renaming the node after dragging the output node, wherein the node name is an output relation name;
a3. dragging an operator, adding a connecting line, selecting a relation, editing an attribute and processing logic.
As a further improvement of the present invention, the arranging the operators in step S4 specifically includes the steps of:
s41, the operator is executed according to the flow direction based on the flow file flow, matching is carried out when the flow direction meets a branch, matching is carried out when the matched output flows out a same flow file flow to the next point, and the matching is not finished until matching is not needed at last.
As a further improvement of the present invention, in step S41, each flow file stream contains stream attributes and stream contents, and in each matching process, the flow file stream is transferred by modifying the stream attributes and the stream contents.
As a further improvement of the invention, the spatial analysis modeling method further comprises the steps of:
s7, online space analysis: abstracting space and attribute data from different sources into the same internal data model, counting and mapping the attribute data, carrying out operations including triangulation and geometric grid construction on the spatial related geometric data, or establishing different projection systems and coordinate conversion according to different types of applications, binding the attribute data on the constructed geometric primitives, and displaying the geometric primitives in a common GIS platform.
The invention has the beneficial effects that: the software of the present invention provides a number of powerful spatial processing tools for performing most basic GIS operations. The method can be operated in any place across platforms without installing and maintaining any special software, and has incomparable advantages in the aspects of installation and deployment, upgrading and maintenance, equipment bandwidth, software learning and popularization cost and the like. With the tools in these toolboxes, it is possible to perform superposition, creating buffers, 3D analysis, spatial manipulation transformation analysis, density analysis, spatial statistical analysis, interpolation computation, and more operations, solving spatial or statistical problems, a collection of operational geo-processing tools such as various analyses, data management, and data transformation. The method is used for solving, mapping and researching the characteristics of complex geographic data and the relation processing and application among the characteristics, and extracting, representing and transporting the positions and spatial forms of geographic objects from a plurality of information sources, so that the adaptability of various comprehensive spatial analysis models to specific activities is obtained, the important problems beyond the simple visual analysis range are solved, and a basic new view angle of model analysis is provided for making a critical decision.
Drawings
FIG. 1 is a schematic diagram of the structure of an operator element in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1, the spatial analysis modeling method based on online visualization editing of the present invention includes the following steps:
s1, adding and connecting analysis data and analysis tools on line, constructing operators and combining the operators into an operator workflow;
s2, processing and analyzing a table in each element class, grid, file or working space in the data in an iterative mode;
s3, arranging operators and displaying a workflow sequence by using a chart;
s4, operating the operators step by step until the selected operator step is performed, or operating the whole operator;
s5, setting the operator as a geographic processing tool, sharing the operator script, and storing the operator script and other operators in an operator library for use;
and S6, generating parameter links to automatically execute operator operation.
The spatial analysis modeling method based on online visual editing further comprises the following steps:
s7, online space analysis: abstracting space and attribute data from different sources into the same internal data model, counting and mapping the attribute data, carrying out operations including triangulation and geometric grid construction on the spatial related geometric data, or establishing different projection systems and coordinate conversion according to different types of applications, binding the attribute data on the constructed geometric primitives, and displaying the geometric primitives in a common GIS platform.
Wherein, step S1 specifically includes the steps of:
s11, analysis data are selected as input items independently, analysis tools used in the data analysis and preparation processes are combined with the analysis data through links corresponding to the analysis tools, and the analysis data are connected in series through a flow chart to create operators and operator workflows.
Step S1 is a step of constructing operators and combining them into a model expression form of an operator workflow:
s12, a series of data processing tools or spatial analysis tools are connected in series to form a schematic diagram, the output of one process is used as the input of the other process, parameter links of corresponding tools are generated in a visualized mode, and operator operation is executed automatically.
The invention relates to a visual geographic processing operator workflow. And the geographic processing operator is used for carrying out automatic processing and recording on the spatial analysis and data management process. The model is represented as a schematic diagram which connects a series of processes and geographic processing tools together in series, the output of one process is used as the input of another process, and the operator operation is automatically executed by the parameter link of the corresponding tool through visualization.
As shown in fig. 1, the operator is created from operator elements in step S1, and the operator elements are basic building units of the operator. Operator elements are mainly divided into four types: geo-processing tools, variables, connectors, and groups.
A geographic processing tool for performing a variety of operations on geographic data or tabular data. After the tool is added into the operator, the tool becomes an operator element. A tool dialog box for any of the geo-processing tools in the operator can be opened to set the input and output parameters.
Variables are elements of operators used to hold values or reference data, and there are two types of variables: data and values.
A connector for connecting data and values to the tool, the connector arrow showing the direction of execution of the geographic process; there are four types of connectors: data, environment, preconditions and feedback.
Groups are visual elements used to group related tools together, and these groups can be folded or unfolded to hide or display the tools, thereby providing more visual space for use.
The operators laid out in step S3 include a single operator and a combined operator. The operators are some functional operators which are processed in advance based on operator kernels, and comprise single operators and combined operators. In the actual arrangement, an operator is basically used for arrangement. An operator may be understood as calling a single kernel to process, and a combination operator is a set of kernel processes, which are combined by a specific arrangement.
The arrangement process of the combination operator comprises the following steps:
a1. the fixed input node fixes the input when the operator is created, and the input is flowfile flow brought in by actual arrangement;
a2. setting an output node, renaming the node after dragging the output node, wherein the node name is an output relation name;
a3. dragging an operator, adding a connecting line, selecting a relation, editing an attribute and processing logic.
The step of arranging the operators in step S4 specifically includes the steps of:
s41, the main lines of operator arrangement are all executed by operators according to the flow direction based on the flow file stream, matching is carried out when the flow direction meets a branch, and matching is carried out when the matched output flows out a same flow file stream to the next point until matching is not needed at last. I.e. one point matching to two outputs, two flow directions will be diffracted, each flow direction having its own end point. Each flow file stream contains stream attributes and stream contents, and the flow file stream is transmitted by modifying the stream attributes and the stream contents in each matching process.
The invention has the following beneficial effects:
(1) GIS space analysis flow automatic processing: a user autonomously selects analysis data as an input item, all analysis tools and data used in the data analysis and preparation process are combined through links corresponding to the analysis tools, the data are connected in series through the existing flow chart form to create a high-level analysis tool to realize a complex GIS task, and then the analysis result corresponding to the analysis tools can be generated and viewed.
(2) Shared data processing: the operation link is generated in each operation and stored in the visual system, so that the operation link can be used by an operator, the operation link is convenient to share with other people, the repeated use of the tool is realized, and unnecessary repeated operation labor is reduced.
(3) No programming process is required: the system provides a graphical modeling environment for designing the analysis script and realizing the spatial processing model, directly and automatically generates the analysis link, greatly reduces the programming requirements on operators and users, and can ensure automation and flow of a plurality of production, thereby improving the efficiency of data processing and ensuring the quality of data processing.
(4) Visual modeling: the method is used for constructing the workflow of the geographic processing and automatically processing the constructed workflow. The expression form is a schematic diagram of a series of data processing tools or spatial analysis tools which are connected in series, the output of one process is used as the input of another process, and finally the result of data processing or spatial analysis is obtained. Visual modeling is a system that utilizes spatial analysis logic and custom organizational models used by users to facilitate better understanding of demand, better design, and easier maintenance.
(5) Online spatial analysis: the online visual editing space analysis modeling mode has no limitation on where and when, and the online editing technology is utilized to expand and perfect the requirements of the GIS, thereby being greatly convenient for users to perform online inquiry, operation, processing, sharing GIS editing and other various information dynamic combinations and collaborative processing and analysis of space data all the time and everywhere. The method realizes the abstraction of space and attribute data from different sources into the same internal data model, the statistics and mapping of the attribute data, the triangularization of the spatial related geometric data, the construction of geometric grids and other operations, or the establishment of different projection systems and coordinate transformation according to different types of applications, the binding of the attribute data on the constructed geometric primitives, the display in a common GIS platform and the provision of efficient interactive operations.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (10)
1. A space analysis modeling method based on online visual editing is characterized by comprising the following steps:
s1, adding and connecting analysis data and analysis tools on line, constructing operators and combining the operators into an operator workflow;
s2, processing and analyzing a table in each element class, grid, file or working space in the data in an iterative mode;
s3, arranging operators and displaying a workflow sequence by using a chart;
s4, operating the operators step by step until the selected operator step is performed, or operating the whole operator;
s5, setting the operator as a geographic processing tool, sharing the operator script, and storing the operator script and other operators in an operator library for use;
and S6, generating parameter links to automatically execute operator operation.
2. The on-line visualization editing-based spatial analysis modeling method as claimed in claim 1, wherein said step S1 specifically includes the steps of:
s11, analysis data are selected as input items independently, analysis tools used in the data analysis and preparation processes are combined with the analysis data through links corresponding to the analysis tools, and the analysis data are connected in series through a flow chart to create operators and operator workflows.
3. The spatial analysis modeling method based on online visualization editing as claimed in claim 1, wherein said step S1 is to construct operators and combine them into model representation of operator workflow as steps:
s12, a series of data processing tools or spatial analysis tools are connected in series to form a schematic diagram, the output of one process is used as the input of the other process, parameter links of corresponding tools are generated in a visualized mode, and operator operation is executed automatically.
4. The spatial analysis modeling method based on online visualization editing as claimed in claim 1, wherein said operator in step S1 is formed by creation of operator elements, said operator elements comprising:
a geographic processing tool for performing a plurality of operations on geographic data or tabular data;
the operator comprises a variable, wherein elements used for storing values or quoting data in the operator comprise a data variable and a value variable;
a connector for connecting data and values to the tool, the connector arrow showing the direction of execution of the geographic process;
groups, visual elements for grouping related tools together, and folding or unfolding to hide or display the tools.
5. The method of claim 4, wherein the type of the connector comprises data, environment, preconditions, and feedback.
6. The method for modeling spatial analysis based on online visual editing according to claim 1, wherein the operators laid out in step S3 include a single operator and a combined operator, and the combined operator is a combination after being laid out.
7. The method for modeling spatial analysis based on online visual editing according to claim 6, wherein the layout process of the combination operator comprises the steps of:
a1. when an operator is created, fixing an input node, and inputting flowfile flow during arrangement;
a2. setting an output node, renaming the node after dragging the output node, wherein the node name is an output relation name;
a3. dragging an operator, adding a connecting line, selecting a relation, editing an attribute and processing logic.
8. The spatial analysis modeling method based on online visualization editing as claimed in claim 1, wherein said step S4 of arranging operators specifically includes the steps of:
s41, the operator is executed according to the flow direction based on the flow file flow, matching is carried out when the flow direction meets a branch, matching is carried out when the matched output flows out a same flow file flow to the next point, and the matching is not finished until matching is not needed at last.
9. The method for modeling spatial analysis based on online visual editing according to claim 8, wherein in step S41, each process file stream contains stream attributes and stream contents, and the process file stream is transferred by modifying the stream attributes and the stream contents during each matching process.
10. The method for modeling spatial analysis based on online visual editing according to claim 1, further comprising the steps of:
s7, online space analysis: abstracting space and attribute data from different sources into the same internal data model, counting and mapping the attribute data, carrying out operations including triangulation and geometric grid construction on the spatial related geometric data, or establishing different projection systems and coordinate conversion according to different types of applications, binding the attribute data on the constructed geometric primitives, and displaying the geometric primitives in a common GIS platform.
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| CN115494989A (en) * | 2022-11-17 | 2022-12-20 | 帆软软件有限公司帆软南京分公司 | Analysis node generation method and device, electronic equipment and storage medium |
| CN117235172A (en) * | 2023-10-19 | 2023-12-15 | 之江实验室 | Interaction method and device for integrating data analysis flow and visualization system construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115494989A (en) * | 2022-11-17 | 2022-12-20 | 帆软软件有限公司帆软南京分公司 | Analysis node generation method and device, electronic equipment and storage medium |
| CN117235172A (en) * | 2023-10-19 | 2023-12-15 | 之江实验室 | Interaction method and device for integrating data analysis flow and visualization system construction |
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