Select by Polygon
Documentation | Help File | UI | 2D Mode | Menu | Select | Select by Polygon
Clicking on the Select/Select by Polygon
menu item activates the Select by Polygon
selection method for the Map area. The Select by Polygon
selection method is used to select a shape or multiple shapes contained in the currently active vector layer (the one highlighted in the Legend) that are in a predefined spatial relation with the user drawn polygons. The spatial relation model can be selected from the Select type list.
To select a shape or multiple shapes using the Select by Polygon
selection method
Activate (highlight) the vector layer on which the selection is to be performed. Do this by clicking on its name in the
Legend.
Choose a spatial relation model from the
Select type list available under the
Select/Select type
menu item.
Click on the Select/Select by Polygon
menu item.
Within the
Map area click on a point appropriate to the selection model and location of the desired shapes - this fixes the starting vertex of the first face of the polygon.
Draw the face by moving the mouse pointer in any direction. [OPTIONAL] A single click within the
Map area fixes an intermediate vertex and starts drawing another face of the polygon.
To fix the final vertex of the polygon double-click on any point within the
Map area. If the first and the last vertex do not equal then the Editor will complete the polygon by adding the face connecting these vertices.
To make multiple selections using the Select by Polygon
selection method
Activate (highlight) the vector layer on which the selection is to be performed. Do this by clicking on its name in the
Legend.
Choose a spatial relation model from the
Select type list available under the
Select/Select type
menu item.
Click on the Select/Select by Polygon
menu item.
Press and hold down the Ctrl
key.
Within the
Map area click on a point appropriate to the selection model and location of the desired shapes - this fixes the starting vertex of the first face of the polygon.
Draw the face by moving the mouse pointer in any direction. [OPTIONAL] A single click within the
Map area fixes an intermediate vertex and starts drawing another face of the polygon.
To fix the final vertex of the polygon double-click on any point within the
Map area. If the first and the last vertex do not equal then the Editor will complete the polygon by adding the face connecting this vertices.
Repeat the steps from 5 to 7 as many times as needed.
Release the Ctrl
key.
Also accessible by
The
icon on the
Standard toolbar; if not visible click on the leftmost
icon on the same toolbar and then on the
Select by Polygon
item on the drop-down list.
Associated functions
To transfer the selected shapes to the temporary clipboard layer, use one of the following functions:
Cut,
Copy,
Copy Special.
To remove the selected shapes from the layer, use the
Delete shape feature.
To cancel all previously made selections, use the
Deselect all feature.
To invert the current selection, i.e. select all not selected shapes and deselect all selected shapes in the active layer, use the
Invert Selection feature.
-
Similar functions
Note
All currently selected shapes are highlighted on the
Map area.
Values (or averages, maximal and minimal numeric values) of attributes of the selected shape (or shapes) are displayed in the
Attributes
tab of the
Selected panel.