Point in polygon: Difference between revisions

From GRASS-Wiki
Jump to navigation Jump to search
(new)
 
No edit summary
Line 1: Line 1:
'''''Q:''' Is there a way to query if a given point is inside if a polygon (closed area)?''  
'''''Q:''' Is there a way to query if a given point is inside a polygon (closed area)?''  


'''''A:''' Yes, with v.select. It allows you to select points which overlap areas or vice versa:
'''''A:''' Yes, with v.select. It allows you to select points which overlap areas or vice versa:

Revision as of 12:10, 13 July 2007

Q: Is there a way to query if a given point is inside a polygon (closed area)?

A: Yes, with v.select. It allows you to select points which overlap areas or vice versa:

    v.select ainput=points binput=areas output=points_in_areas

The resulting map 'points_in_areas' will contain points which are inside the area(s).