I have been using Argis 10.1 and been able to convert polygon m to polygon shapefiles. I would like to do this with QGIS but I am having difficulty in finding the correct tool to do so.
Please Help
I imagine you want to convert Multipart Shapefiles to Singlepart Shapefiles.
The tool you want is: Vector>Geometry Tools>Multipart to singleparts
If this is not the case you need to clarify your question. How do you do it in ArcGIS?
answered Aug 6 '14 at 15:26
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1Polygon M means shapefile type "Polygon with measure". This type is not supported by GDAL and I think not by QGIS either. Read esri.com/library/whitepapers/pdfs/shapefile.pdf for more information. I would have a try with Spatialite. It may be able to import PolygonM data and cast those to XY polygons gaia-gis.it/gaia-sins/xmlBlob/… – user30184 Aug 6 '14 at 16:48
If you have QGIS installed you may use OSGeo4WShell for this. The command would be something like this:
ogr2ogr -f "ESRI Shapefile" C:/Temp/countries.shp C:/Temp/countriesZM.shp -lco SHPT=Polygon
AND to convert to ZM it would be:
ogr2ogr -f "ESRI Shapefile" C:/Temp/countriesZM_2.shp C:/Temp/countries.shp -lco SHPT=PolygonZ
MMGIS's Geometry Convert can also help you drop the m and z and generate a new shp file.
