Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. It only takes a minute to sign up.
Sign up to join this community
I have this :
poly1 = ogr.CreateGeometryFromWkt(polygons)
and error :
Traceback (most recent call last):
File "C:\PROGRA~1\QGIS3~1.6\apps\Python37\lib\code.py", line 90, in runcode
exec(code, self.locals)
File "<input>", line 1, in <module>
File "C:\PROGRA~1\QGIS3~1.6\apps\Python37\lib\site-packages\osgeo\ogr.py", line 5666, in CreateGeometryFromWkt
return _ogr.CreateGeometryFromWkt(*args, **kwargs)
TypeError: not a string
ConvertGeometryFromWkt creates a geometry from a WKT file. Your title suggests you are trying to create a WKT file - ie. the reverse operation.
The error makes sense in this context. WKT is a string (ie. text), and "polygons" isn't.
If you are trying to convert a shapefile into a WKT file, then the ogr2ogr command line utility is probably a better way of doing this. ogr2ogr is installed with the rest of GDAL/OGR - usually installed with QGis.
OG.CreateGeometryFromWkt (name_layer)and you have some WKT looking image (code is better) as a result. If your input was a shapefile then something has obviously worked. So what were you expecting? You also say you want to do an intersection on two shapefile layers, but that doesn't seem relevant to your code.