gvSIG-Desktop 1.11. User manual

This tool allows you to create a polygonal feature inside an existing feature.

You can access this tool by going to the "Geometry" menu then to "Modify" and "Internal polygon”

or from the following tool bar button:

You can create an internal polygon, either graphically or from the gvSIG command console.

If you wish to create the polygon graphically, the polygon element layer must be in editing mode and you must select the polygon on which you wish to use the selected tool.

Activate the "Internal polygon" tool and place the cursor where you wish to insert the first vertex.

Then insert the vertices of the polygonal feature you wish to create. When you do not wish to insert any more vertices, right click on the mouse and select “End” from the contextual menu that appears.

The corresponding internal polygon is created.

You can also use this tool from the command console. To do so, write the command “internal polygon” in the command line.

Then input the X and Y coordinates of the points which will correspond to the vertices of the new polygonal feature. When you have finished, write “e” to close the new internal polygon you have created.