CN108171772A - Utilize the method for mapGIS, CJKCOOR_Ver and DELF3D extraction river boundaries - Google Patents
Utilize the method for mapGIS, CJKCOOR_Ver and DELF3D extraction river boundaries Download PDFInfo
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- CN108171772A CN108171772A CN201711454297.9A CN201711454297A CN108171772A CN 108171772 A CN108171772 A CN 108171772A CN 201711454297 A CN201711454297 A CN 201711454297A CN 108171772 A CN108171772 A CN 108171772A
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- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/20—Drawing from basic elements, e.g. lines or circles
- G06T11/203—Drawing of straight lines or curves
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/20—Drawing from basic elements, e.g. lines or circles
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Abstract
The invention discloses a kind of methods using mapGIS, CJKCOOR_Ver and DELF3D extraction river boundaries, specifically include following steps：The latitude and longitude value of the upper river boundaries point .WT of figure is obtained using mapGIS, the latitude and longitude value of boundary point is converted into geodetic coordinates using CJKCOOR_Ver, Basin Boundary is drawn using DELF3D.The invention has the beneficial effects that：As long as mapGIS softwares the 1st, can be operated, it is not necessary to ARCGIS softwares can be operated, you can simply and easily extract river boundaries；2nd, mapGIS softwares can handle no attribute or the unmatched dot file of attribute, the scope of application are more extensive.
Description
Technical field
The present invention relates to a kind of methods for extracting river boundaries, and in particular to it is a kind of using mapGIS, CJKCOOR_Ver and
The method that DELF3D extracts river boundaries, belongs to hydraulic engineering technical field.
Background technology
When extracting Basin Boundary, river areal calculation and River Hydrology parameter extraction are bases, and hydrological analysis is calculated
Precision have a major impact.In the past, everybody mostly obtained longitude and latitude in ARGIS, then stored into Excel forms, by Excel lattice
Batch conversion is into geodetic coordinates in CJKCOOR_Ver2.0 softwares for the latitude and longitude value of formula, and unloading is in Excel formatted files again
X is acquired, Y relative coordinates (compared with minimum value) finally draw Basin Boundary using the program that DELF3D or EFDC are carried.But
In the case of the personnel or map sheet that will not use ARCGIS only have mapGIS forms, it is desirable to analyze water using existing method
Literary problem there is certain difficulty.
Invention content
To solve the deficiencies in the prior art, the purpose of the present invention is to provide a kind of utilizations easy to operate, easy to use
The method that mapGIS, CJKCOOR_Ver and DELF3D extract river boundaries.
In order to realize above-mentioned target, the present invention adopts the following technical scheme that：
A kind of method for extracting river boundaries, which is characterized in that carried out using mapGIS, CJKCOOR_Ver and DELF3D
Extraction, specifically includes following steps：
First, the latitude and longitude value of the upper river boundaries point .WT of figure is obtained using mapGIS
1st, in mapGIS, river boundaries point .WT is imported, clicks graphics process-file conversion-data conversion, first to stream
Domain boundary point resets default ID number；
2nd, the in-edit attribute structure in attribute library management；
3rd, river boundaries point .WT files are opened in projective transformation system, river boundaries point .WT is directly carried out to projection and is turned
It changes, whether correct referring then to Current projection parameter, setting target projection parameter becomes geographic coordinate system, and click starts to convert,
Confirming button separately deposits river boundaries point .WT files；
4th, the river boundaries point .WT files separately deposited are reopened, generate attribute in toolbar selected element position or annotation, so
Metafile river boundaries point .WT is opened afterwards, is clicked browsing attribute and is seen whether attribute is correct, clicks conversion, text is preserved after conversion
This document river boundaries point；
5th, text file is opened in Excel later, this article this document is saved as into Excel forms；
2nd, the latitude and longitude value of boundary point is converted into geodetic coordinates using CJKCOOR_Ver
1st, the latitude and longitude value of Excel forms is changed into file river boundaries point .BL formatted files, then in CJKCOOR_
Latitude and longitude value Batch conversion is obtained into file river boundaries point .XY formatted files into geodetic coordinates in Ver softwares；
2nd, the .XY formatted files unloading of file river boundaries point asks for minimum value in X, Y in Excel formatted files, with every
Column data subtracts minimum value in each column, acquires X, Y relative coordinate；
3rd, Basin Boundary is drawn using DELF3D
XY coordinates are changed into .SPl files in DELF3D, then open .SPl files, edit boundary condition, carry out grid
Subdivision saves as .GRD files later, and a Coordinate System=Cartesian is finally added in .GRD files,
The .GRD files can use in simulating river software.
The method of aforementioned extraction river boundaries, which is characterized in that in step 1, setting target projection parameter becomes ground
After managing coordinate system, at control point during deficiency, remove in conversion process using the TIC points in file.
The invention has the beneficial effects that：
As long as mapGIS softwares the 1st, can be operated, it is not necessary to ARCGIS softwares can be operated, you can simply and easily extract river side
Boundary；
2nd, mapGIS softwares can handle no attribute or the unmatched dot file of attribute, the scope of application are more extensive.
Description of the drawings
Fig. 1 is at the interface that mapGIS softwares convert river boundaries point data；
Fig. 2 is the interface of the in-edit attribute structure in mapGIS software attributes library managements；
Fig. 3 is the interface that the river boundaries point without no longitude and latitude attribute is opened in mapGIS software projective transformation systems；
Fig. 4 is at the interface of mapGIS software projective transformations；
Fig. 5 is the interface that Current projection is opened in mapGIS software projective transformation catalogues；
Fig. 6 is the interface that target projection in projective transformation catalogue is built in mapGIS groups；
Fig. 7 is that river boundaries point obtains longitude and latitude attribute and attribute is changed into the interface of text file simultaneously；
Fig. 8 is the boundary that the latitude and longitude value of river boundaries point is converted to geodetic coordinates conversion in CJKCOOR_Ver softwares
Face；
Fig. 9 is the interface of river boundaries point .SPl File Opens；
Figure 10 is the interface that DELF3D draws Basin Boundary subdivision graph.
Specific embodiment
Make specific introduce to the present invention below in conjunction with the drawings and specific embodiments.
The method of the extraction river boundaries of the present invention, is extracted using mapGIS, CJKCOOR_Ver and DELF3D, had
Body includes the following steps：
First, the latitude and longitude value of the upper river boundaries point .WT of figure is obtained using mapGIS
1st step：In mapGIS, river boundaries point .WT is imported, clicks graphics process-file conversion-data conversion (ginseng
See Fig. 1), first default ID number is reseted to Basin Boundary point.
2nd step：In-edit attribute structure in attribute library management (referring to Fig. 2).
3rd step：River boundaries point .WT files (referring to Fig. 3) are opened in projective transformation system, by river boundaries point .WT
Projection transform (referring to Fig. 4) is directly carried out, it is whether correct (referring to Fig. 5) referring then to Current projection parameter, set target projection
Parameter becomes geographic coordinate system (referring to Fig. 6), at control point during deficiency, removes in conversion process using the TIC points in file, point
It hits and starts to convert, confirming button separately deposits river boundaries point .WT files.
4th step：The river boundaries point .WT files separately deposited are reopened, are belonged in toolbar selected element position or annotation generation
Property (referring to Fig. 7), then open metafile river boundaries point .WT, click browsing attribute see whether attribute correct, click turn
It changes, text file river boundaries point is preserved after conversion.
5th step：Text file is opened in Excel later, this article this document is saved as into Excel forms.
2nd, the latitude and longitude value of boundary point is converted into the 1st step of geodetic coordinates using CJKCOOR_Ver：By Excel forms
Latitude and longitude value changes into file river boundaries point .BL formatted files, then turns latitude and longitude value batch in CJKCOOR_Ver softwares
It changes geodetic coordinates (referring to Fig. 8) into, obtains file river boundaries point .XY formatted files.
2nd step：The point .XY formatted files unloading of file river boundaries asks for minimum value in X, Y in Excel formatted files,
Minimum value in each column is subtracted with every column data, acquires X, Y relative coordinate.
3rd, Basin Boundary is drawn using DELF3D
XY coordinates are changed into .SPl files in DELF3D, then open .SPl files (referring to Fig. 9), edit perimeter strip
Part carries out mesh generation, saves as .GRD files later, and a Coordinate System is finally added in .GRD files
=Cartesian, the .GRD files can use in simulating river software, and the Basin Boundary subdivision graph that DELF3D is drawn is shown in
Figure 10.
It can be seen that using the method for extraction river boundaries provided by the invention, as long as mapGIS softwares can be operated,
ARCGIS softwares must not be operated, are operated very simply, conveniently.
It should be noted that the invention is not limited in any way for above-described embodiment, it is all to use equivalent replacement or equivalent change
The technical solution that the mode changed is obtained, all falls in protection scope of the present invention.
Claims (2)
- A kind of 1. method for extracting river boundaries, which is characterized in that carried using mapGIS, CJKCOOR_Ver and DELF3D It takes, specifically includes following steps：First, the latitude and longitude value of the upper river boundaries point .WT of figure is obtained using mapGIS1st, in mapGIS, river boundaries point .WT is imported, graphics process-file conversion-data conversion is clicked, first gives basin side Boundary's point resets default ID number；2nd, the in-edit attribute structure in attribute library management；3rd, river boundaries point .WT files are opened in projective transformation system, river boundaries point .WT is directly subjected to projection transform, Whether correct referring then to Current projection parameter, setting target projection parameter becomes geographic coordinate system, and click starts to convert, and determines Button separately deposits river boundaries point .WT files；4th, the river boundaries point .WT files separately deposited are reopened, in toolbar selected element position or annotation generation attribute, are then beaten Metafile river boundaries point .WT is opened, browsing attribute is clicked and sees whether attribute is correct, click conversion, text text is preserved after conversion Part river boundaries point；5th, text file is opened in Excel later, this article this document is saved as into Excel forms；2nd, the latitude and longitude value of boundary point is converted into geodetic coordinates using CJKCOOR_Ver1st, the latitude and longitude value of Excel forms is changed into file river boundaries point .BL formatted files, it is then soft in CJKCOOR_Ver Latitude and longitude value Batch conversion is obtained into file river boundaries point .XY formatted files into geodetic coordinates in part；2nd, the .XY formatted files unloading of file river boundaries point asks for minimum value in X, Y in Excel formatted files, with every columns According to minimum value in each column is subtracted, X, Y relative coordinate are acquired；3rd, Basin Boundary is drawn using DELF3DXY coordinates are changed into .SPl files in DELF3D, then open .SPl files, edit boundary condition, grid is carried out and cuts open Point .GRD files are saved as later, and a Coordinate System=Cartesian is finally added in .GRD files, The .GRD files can use in simulating river software.
- 2. the method for extraction river boundaries according to claim 1, which is characterized in that in step 1, setting target is thrown After shadow parameter becomes geographic coordinate system, at control point during deficiency, remove in conversion process using the TIC points in file.
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