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| =v.digit=
| | __TOC__ |
| GRASS digitizing tool should be
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| * written in '''wxPython''' Programming language or Tcl
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| * it should extend functionality of map display just like new Georeferencing tool does:
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| ** (like ArcGIS does) only new "Digitizing Toolbox" would appear, after digitizing tool is started
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| ** Vector file editing will happen in current map display, with all it's functions for zooming, quering and so on
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| * There should be graphical tool for database management, at least for adding (?and removing?) columns, adding new features and editing existing ones.
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| While digitising, edited vector file would be drawed to map display. ''Only currently edited or selected features would be stored in memory.'' This should spead up digitising and redrawing process significantly.
| | == GUI vector digitizer == |
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| =v.edit= | | === New digitizer === |
| GRASS graphical digitising tool should be graphical front-end for new v.edit module. v.edit should be CML tool for
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| * creating new vector file, eventualy overwrite existing ones '''create'''
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| * adding new features (points, lines, polylines, centroids) '''add'''
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| * removenig old features (with database record) '''delete'''
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| * moving whole feature '''move'''
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| * moving specified vertex '''vertex'''
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| * adding new vertext to line/boundary '''break'''
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| * spliting line/boundary completely '''split'''
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| * removing vertex '''straight'''
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| * selecting features '''select'''
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| * merging two lines/boundaries together '''merge'''
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| * IMHO funtionality for adding 'z' values to vector contour lines should be back too
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| v.edit should accept feature selection by:
| | Quick overview: |
| * bbox '''bbox''' | | * Editing of vector objects: |
| * catlist '''cats''' | | ** Add, Break, Copy, Connect, Convert Type, Delete, Flip direction, Merge, Move, Select lines by query, Snap, Split |
| * single coordinates '''coords''' | | * Cats: |
| | ** Copy, Delete, Z-Bulk Labeling |
| | * Vertex: |
| | ** Insert, Delete, Move |
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| ==Examples of actions==
| | * '''For details, see [[WxGUI#Vector_digitizer|Vector digitizer]] in [[wxGUI]]''' |
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| (see also [http://grass.itc.it/grass63/manuals/html63_user/v.edit.html v.edit manual page])
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| * Create new vector file
| | [[Image:WxGUI-vdigit-win0.png|thumb|400px|center]] |
| v.edit tool=create map=vectfile
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| creates new vector map, eventualy will read data from standard inputs in default format (standard/point)
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| v.edit tool=create map=vectfile input=file.txt
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| creates new vector map and reads data from file file.txt in default format
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| * Add new feature to existing vector | | === Old digitizer === |
| cat points | v.edit tool=add map=vectfile
| | * TCL/TK-based old fashioned [http://grass.osgeo.org/grass63/manuals/html63_user/v.digit.html v.digit] module |
| Read data from standard inputs in standard format
| | * no longer maintained |
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| | [[Image:V digit tcltk.png|thumb|400px|center]] |
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| * Remove feature from vector file
| | == Command Line (CLI) vector digitizer == |
| v.edit tool=delete map=vectfile cat=34,24
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| Remove features with category 34 and 24 from file vectfile
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| v.edit tool=delete map=vectfile coords=344556.23,23445.2345
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| Remove feature located on coordinates 344556.23,23445.2345
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| v.edit tool=delete map=vectfile bbox=344556.23,234455.2345,567566.34,456455.34
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| Remove features defined by bounding box 344556.23,234455.2345,567566.34,456455.34
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| * Move feature
| | See manual page of {{cmd|v.edit}}. |
| v.edit tool=move map=vectfile coords=344556.23,23445.2345 move=100000,-100000
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| Move feature located on coordinates 344556.23,23445.2345 to coordinates 644556.23,43445.2345
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| v.edit tool=move map=vectfile cat=45 move=1000,-1000
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| Move all points of feature of category 45 to coordinates about 1000 map units to the west and 1000 map units to the south
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| v.edit tool=move map=vectfile bbox=344556.23,234455.2345,567566.34,456455.34 to=1000,-1000
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| Move all points of features defined by bounding box 344556.23,234455.2345,567566.34,456455.34 about 1000 map units to the west and 1000 map units to the south
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| * Moving vertex
| | == Raster digitizer == |
| v.edit tool=vertex map=vectfile coords=344556.23,23445.2345 move=1000,-1000
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| Move vertex on coordinates 344556.23,23445.2345 to 545556.23,22445.2345
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| * Breaking line
| | The {{cmd|r.in.poly}} ASCII format is almost the same as the standard vector ASCII format. So the new digitizer should be able to output for both, and then we have a replacement for {{cmd|r.digit}} too! |
| v.edit tool=break map=vectfile coords=344556.23,23445.2345
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| Break line on coordinates 344556.23,23445.2345 at coords 345433.3,34567.32
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| v.edit tool=break map=vectfile cat=45 coords=345433.3,34567.32
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| Break line of category 45 at coords 345433.3,34567.32
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| * Remove vertex -- straight line
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| v.edit tool=straight map=vectfile coords=344556.23,23445.2345
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| Remove vertex at coordinates 344556.23,23445.2345
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| * Splitting line
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| v.edit tool=split map=vectfile coords=344556.23,23445.2345
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| Split line on coordinates 344556.23,23445.2345 at coords 345433.3,34567.32
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| v.edit tool=split map=vectfile cat=45 coords=345433.3,34567.32
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| Split line of category 45 at coords 345433.3,34567.32
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| * Merging two lines
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| v.edit tool=merge map=vectfile coords=606853.875,4921332,603216.75,4922763
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| Merge first line defined by coordinates 606853.875,4921332 with second line, defined by coordinates 603216.75,4922763. Define nearest distance between line first and last points and move first (last) point of second line to first line -- First line will remain untached.
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| v.edit tool=merge map=vectfile bbox=344556.23,23445.2345
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| Merge two lines defined by bounding box
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| v.edit tool=merge map=vectfile cat=43,45
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| Merge two lines defined by category
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| * Selecting features
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| Print line id's selected by coords, bbox or cat. Example:
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| v.edit map=soils@PERMANENT tool=select bbox=595733.8125,4919781.75,598536.1875,4917396.75
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| Example with d.vect:
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| d.vect col=red width=2 -i cat="`v.edit map=soils@PERMANENT tool=select bbox=595733.8125,4919781.75,598536.1875,4917396.75`" map=soils
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| ==Summary==
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| v.edit --help
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| Description:
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| Edits a vector map - allows adding, deleting and modifying objects in a vector map.
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| Keywords:
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| vector, editing, geometry
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| Usage:
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| v.edit [-tin] map=name [layer=value] [type=string[,string,...]]
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| tool=string [input=name] [move=x,y] [thresh=value] [cats=range]
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| [ids=range] [coords=x,y[,x,y,...]] [bbox=x1,y1,x2,y2]
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| [polygon=x,y[,x,y,...]] [where=sql_query] [--verbose] [--quiet]
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| Flags:
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| -t Do not build topology
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| -i Print ID's of edited features
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| -n Do not expect header of input data
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| --v Verbose module output
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| --q Quiet module output
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| Parameters:
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| map Name of input vector map
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| layer Layer number
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| A single vector map can be connected to multiple database tables. This number determines which table to use.
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| default: 1
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| type Type
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| Feature type(s)
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| options: point,line,boundary,centroid
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| default: point,line,boundary,centroid
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| tool Editing tool
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| options: create,add,delete,copy,move,flip,catadd,catdel,merge,
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| break,snap,vertexadd,vertexdel,vertexmove,select
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| create: Create new (empty) vector map
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| add: Add new feature(s) to existing vector map
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| delete: Delete selected feature(s) from vector map
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| copy: Copy selected features
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| move: Move selected feature(s) in vector map
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| flip: Flip direction of selected vector lines
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| catadd: Set new category(ies) to selected vector feature(s) for defined layer
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| catdel: Delete category(ies) from selected vector feature(s) for defined layer
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| merge: Merge selected vector lines
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| break: Break (split) vector line into two separate lines
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| snap: Snap one vector line to another
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| vertexadd: Add new vertex to selected vector lines
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| vertexdel: Remove vertex from selected vector lines
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| vertexmove: Move vertex of selected vector lines
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| select: Select lines and print their ID's
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| input ASCII file to be converted to binary vector map, if not given (or "-") reads from standard input
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| move Difference in x,y direction for moving feature or vertex
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| thresh Threshold distance
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| default: 0
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| cats Category values
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| Example: 1,3,7-9,13
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| ids ID values
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| Example: 1,3,7-9,13
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| coords List of point coordinates
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| bbox Bounding box for selecting features
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| polygon Polygon for selecting features
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| where WHERE conditions of SQL statement without 'where' keyword
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| Example: income < 1000 and inhab >= 10000
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| = r.digit =
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| The r.in.poly ascii format is almost the same as the standard vector ascii format. So the new digitizer should be able to output for both, and then we have a replacement for r.digit too! | |
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| [[Category:Development]] | | [[Category:Development]] |
| | [[Category:Vector]] |
