17

I want to convert polygons into points using QGIS.

I know how it's done in ArcGIS Desktop.

  • 2
    Do you mean convert the polygon borders into points or just reduce it to a point (get centroids)? – R.K. Apr 30 '12 at 14:35
33

You can do polygon to centroid in QGIS using:

Vector - Geometry Tools - Polygon Centroids

  • Aragon, i didn't make it! i have 2 polygon and after using the tool i got only 2 point in the center of the polygon. i want point in the perimeter of the polygons.how do i do it with qgis? – newGIS Jan 14 '15 at 8:37
  • Check gene answer below. – Alexandre Neto Jan 14 '15 at 14:54
21

You can do polygon to border nodes in QGIS using:

Vector - Geometry Tools - Nodes extraction
1

If you want to decide on your own point spacing, you can use the Sextante Toolbox with SAGA functionality activated (you'll need to install saga - www.saga-gis.org/ - and specify the installation path in sextante). Use the 'polygons to line' geoalgoritm followed by the 'line to points' one. You can create a model in sextante that combines these into one step as well.

Note: you have to make sure you install the right version of SAGA - I think its 2.0.8

-1

If you want to convert polygon to point using QGIS. Then use
Vector > Analysis Tools > Mean Coordinate.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.