3

I want to get the difference between two poligons. Ejemplo de lo que quiero obtener

I compare the result from Arcgis erase tool and QGIS difference. ArcGIS give me that I want, but Qgis don't.

Why? Results

QGIS not only give wrong results,don't give me the holes that I want to fill.

Anyone knows why this don't works?. I don't have selected polygons in QGIS.

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  • 1
    Can you provide test data? Are any of the input geometries invalid? This should probably be a bug report rather than a GIS.SE question.
    – underdark
    Apr 2 '16 at 20:32
  • Hi. Thanks for your answer. I get the same result in ArcGIS and QGIS, but in QGIS I used the difference tool from SAGA vector polygon tools. Apr 2 '16 at 20:51
  • 1
    Good to hear that you found a solution! Would still be great if you could file a ticket for the difference tool that didn't work.
    – underdark
    Apr 2 '16 at 20:58
  • ¿How can I get the invalid geometries? Apr 2 '16 at 21:29
  • You can check validity using Vector | Geometry tools | Check validity
    – underdark
    Apr 2 '16 at 21:31
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I get the same result in ArcGIS and QGIS, but in QGIS I used the difference tool from SAGA vector polygon tools.

Here the result.Result

1
  • I have had some issues with the QGIS difference tool for larger complex datasets. But SAGA has worked well. Apr 4 '16 at 10:38

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