User Tools

Site Tools


guide:help:mnuselectselectbypolygon

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

  1. Activate (highlight) the vector layer on which the selection is to be performed. Do this by clicking on its name in the Legend.
  2. Choose a spatial relation model from the Select type list available under the Select/Select type menu item.
  3. Click on the Select/Select by Polygon menu item.
  4. 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.
  5. 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.
  6. 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

  1. Activate (highlight) the vector layer on which the selection is to be performed. Do this by clicking on its name in the Legend.
  2. Choose a spatial relation model from the Select type list available under the Select/Select type menu item.
  3. Click on the Select/Select by Polygon menu item.
  4. Press and hold down the Ctrl key.
  5. 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.
  6. 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.
  7. 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.
  8. Repeat the steps from 5 to 7 as many times as needed.
  9. 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.
  • To remove the selection figure, use the mnuselectclearselection 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.
2018/05/22 11:51

Page Tools