<div dir="ltr"><div><div>Hi,<br><br></div>I use the 'v.extrude' module often but cannot understand why the resulting 3D geometries criss-cross on the tops and sometimes the sides of the extrusions. I have tried v.clean in the vector layer but this makes no difference. I have attached an image so that it can be seen. I have tried to use the alternative v.to.3d but this does not complete. Can anyone advise best a use practice.<br>
<br></div>Thanks,<br><div><div><br><b>Paul J. Shapley </b><font><span style="font-family:arial,helvetica,sans-serif">MSc CGeog (GIS) FRGS</span></font><br><div><div dir="ltr"><span style="font-family:times new roman,serif"></span><b><br>
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