WxGUI Vector Digitizer

This page covers core functionality of wxGUI vector digitizer, explains it's usage for newcomers.

• manual page - wxGUI.Vector_Digitizer
• see also GRASS Digitizing tool

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

@TODO

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

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

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 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