WxGUI Vector Digitizer: Difference between revisions

From GRASS-Wiki
Jump to navigation Jump to search
 
(12 intermediate revisions by 3 users not shown)
Line 1: Line 1:
{{ToModify}}
This page covers core functionality of [[wxGUI]] '''vector digitizer''', explains its usage for newcomers.


This page covers core functionality of [[wxGUI]] '''vector digitizer''', explains it's usage for newcomers.
* see also {{cmd|wxGUI.Vector_Digitizer|desc=manual page}}
 
* manual page - {{cmd|wxGUI.Vector_Digitizer}}
* see also [[GRASS Digitizing tool]]
* see also [[GRASS Digitizing tool]]
* see also [http://grass.osgeo.org/programming7/vectorlib.html#vlibTopoManagement Vector library topology management]
* see also [[:Category:Vector|other vector related pages]]
* see also [http://grass.osgeo.org/programming7/vectorlib.html#vlibTopoManagement Vector library topology management] background


;Global mouse buttons functionality:  
;Global mouse buttons functionality:  
Line 189: Line 188:
** Add new vertex at given position
** Add new vertex at given position
* Right
* Right
** Confirm action
** Confirm changes, rewrite feature
* Control+Left
* Control+Left
** Undo last added vertex
** Undo last added vertex
Line 243: Line 242:


== Category/Attributes management ==
== Category/Attributes management ==
Note: for the modification of attributes in the connected table, use the [[WxGUI Attribute Table Manager]].


=== Display categories ===
=== Display categories ===
Line 396: Line 397:
|}
|}
</center>
</center>
== Vector tutorials ==
{{youTube|9hjIw5imzu0|Digitizing roads in wxGUI Vector Digitizer}}
[[Category:Documentation]]
[[Category:Vector]]
[[Category:WxGUI]]

Latest revision as of 09:46, 5 March 2014

This page covers core functionality of wxGUI vector digitizer, explains its usage for newcomers.

Global mouse buttons functionality
  • Left
    • Do something related to the selected functionality
  • Control-Left
    • Cancel operation (depends on selected functionality)
  • Middle scrolling
    • Zooming
  • Middle
    • Panning
  • Right
    • Confirm changes
wxGUI vector digitizer toolbar

Adding new features

Point

Mouse buttons functionality:

  • Left
    • Add new point on given position
wxGUI vector digitizer - add new point and define it's attributes

Line

Mouse buttons functionality:

  • Left
    • Add new vertex on given position
  • Right
    • Write out the new line with given number of vertices
  • Control+Left
    • Remove last added vertex from the line
wxGUI vector digitizer - add new line and define it's attributes

Boundary

Mouse buttons functionality:

  • Left
    • Add new vertex on given position
  • Right
    • Write out the new boundary with given number of vertices
  • Control+Left
    • Remove last added vertex from the boundary
wxGUI vector digitizer - add new boundary and define it's attributes

Centroid

Mouse buttons functionality:

  • Left
    • Add new centroid on given position
wxGUI vector digitizer - add new centroid and define it's attributes

Area

This functionality combines adding new boundary without category and optionally centroid(s) with category defining new area(s). If the newly added boundary defines an area or two areas on the left and right from the boundary it will also add new centroid(s) which define the newly created area(s).

Mouse buttons functionality:

  • Left
    • Add new vertex on given position
  • Right
    • Write out the new boundary with given number of vertices
  • Control+Left
    • Remove last added vertex from the boundary
wxGUI vector digitizer - add new area and define it's attributes

Modifying linear features

This functionality covers linear features (lines and boundaries).

Vertex

Add

Add new vertex to the linear feature (line or boundary). This operation won't change the shape of the selected feature.

Mouse buttons functionality:

  • Left
    • Place new vertex (in given select threshold)
  • Right
    • Confirm addition
  • Control+Left
    • Cancel action (do not add new vertex)
wxGUI vector digitizer - place new vertex to the linear feature
wxGUI vector digitizer - new vertex confirmed

Remove

Remove selected vertex from the linear feature (line or boundary). This operation will change the shape of the selected feature.

Mouse buttons functionality:

  • Left
    • Select vertex to be removed (in given select threshold)
  • Right
    • Confirm removal
  • Control+Left
    • Cancel action (do not remove vertex)
wxGUI vector digitizer - select vertex to be removed
wxGUI vector digitizer - selected vertex removed

Move

Move selected vertex of the linear feature (line or boundary). This operation will change the shape of the selected feature.

Mouse buttons functionality:

  • Left
    • Select vertex to be moved (in given select threshold)
  • Right
    • Confirm new position of the vertex
  • Control+Left
    • Cancel action (do not move vertex)
wxGUI vector digitizer - select vertex to be moved
wxGUI vector digitizer - confirm new position of the vertex

Split

Split linear feature (line or boundary) on given position. The results are two linear features with the same category(ies) as the original feature.

Mouse buttons functionality:

  • Left
    • Select position on the linear feature (in given select threshold)
  • Right
    • Confirm action
  • Control+Left
    • Cancel action (do not split selected feature)
wxGUI vector digitizer - select position where the linear feature will be split
wxGUI vector digitizer - confirm splitting

Edit

Edit linear feature (line or boundary). Only geometry is changed, categories remain untouched.

Mouse buttons functionality:

  • Left
    • Select vertex where to start editing
    • Add new vertex at given position
  • Right
    • Confirm changes, rewrite feature
  • Control+Left
    • Undo last added vertex
wxGUI vector digitizer - select vertex, start editing
wxGUI vector digitizer - editing linear feature finished

Moving features

Move selected feature to the new location.

Mouse buttons functionality:

  • Left
    • Select feature to be moved (in given select threshold)
  • Right
    • Confirm action (new location of the feature)
  • Control+Left
    • Cancel action (do not move selected feature)
wxGUI vector digitizer - feature to be moved selected
wxGUI vector digitizer - confirm new location of the feature

Deleting features

Delete selected feature.

Mouse buttons functionality:

  • Left
    • Select feature to be deleted (in given select threshold)
  • Right
    • Confirm action (delete feature)
  • Control+Left
    • Cancel action (do not delete selected feature, unselect feature)
wxGUI vector digitizer - feature to be deleted selected
wxGUI vector digitizer - confirm and delete selected feature

Category/Attributes management

Note: for the modification of attributes in the connected table, use the WxGUI Attribute Table Manager.

Display categories

Dialog 'Update categories' allows adding new layer/category, modifying and deleting existing layer/categories records. Modify mode is enable after clicking on the item which user wants to be modify. For deleting record(s) right click on selected item and choose from contextual menu 'Delete selected/all'.

Mouse buttons functionality:

  • Left
    • Select feature and show it's categories
wxGUI vector digitizer - display feature categories

Copy categories

@TODO

Duplicate categories

@TODO

Display attributes

Mouse buttons functionality:

  • Left
    • Select feature and show it's attributes
wxGUI vector digitizer - display feature attributes

Additional tools

Copying features

@TODO

Modifying linear features

Flip

Switch direction of linear feature.

Mouse buttons functionality:

  • Left
    • Select feature to be flipped (in given select threshold)
  • Right
    • Confirm action (flip feature)
  • Control+Left
    • Cancel action (do not flip selected feature, unselect feature)
wxGUI vector digitizer - select linear feature for flipping
wxGUI vector digitizer - flipping confirmed

Merge

Merge selected linear features which are connected exactly with two nodes.

Mouse buttons functionality:

  • Left
    • Select features to be merge (in given select threshold)
  • Right
    • Confirm action (merge features)
  • Control+Left
    • Cancel action (do not merge selected features, unselect features)
wxGUI vector digitizer - select linear feature for merging
wxGUI vector digitizer - feature merged

Break

Break selected linear features on each intersection.

Mouse buttons functionality:

  • Left
    • Select features to be broken (in given select threshold)
  • Right
    • Confirm action (break features)
  • Control+Left
    • Cancel action (do not break selected features, unselect features)
wxGUI vector digitizer - select linear feature for breaking
wxGUI vector digitizer - feature broken on intersections

Snap

@TODO

Connect

Connect selected linear features and break them on each intersection.

Mouse buttons functionality:

  • Left
    • Select features to be connected (in given select threshold)
  • Right
    • Confirm action (connect features)
  • Control+Left
    • Cancel action (do not connect selected features, unselect features)
wxGUI vector digitizer - select linear features for connection
wxGUI vector digitizer - features connected and broken on each intersection

Z-bulk labeling

@TODO

Querying

@TODO

Converting feature type

Convert selected feature types:

  • points to centroids
  • lines to boundaries
  • boundaries to lines
  • centroids to points

Categories are kept untouched.


Mouse buttons functionality:

  • Left
    • Select features to be converted (in given select threshold)
  • Right
    • Confirm action (convert features)
  • Control+Left
    • Cancel action (do not convert selected features, unselect features)
wxGUI vector digitizer - feature types before conversion
wxGUI vector digitizer - feature types after conversion

Vector tutorials

Load video
YouTube
Digitizing roads in wxGUI Vector Digitizer
Retrieved from "https://grasswiki.osgeo.org/w/index.php?title=WxGUI_Vector_Digitizer&oldid=20220"