I have a shapefile of 3D polyline. I want to apply a bufferer to these polylines using an attribute to create a surface. However, when I use the Bufferer transformer on the polylines, it seems that I loose Z values of the polylines. How can I fix that?
Hope you could help.
Best regards,
Asher
+19
Assuming that all vertices belonging to a line have identical z coordinate value:
- extract z-value before buffering (ElevationExtractor),
- restore it after buffering (3DForcer).
Takashi
+19Could you please illustrate with some examples?
+15
Or segemtne the lines and use the points in a SurfaceModeller?
In my case, i want to make a Mesh out of polylines with changing z-values over the line as well (public transport lines). I used a surfacedraper and a ascii grid to get the z-values, but the bufferer "deletes" them.
Any workaround tipps for me? If i understand this transformer right, the surfacemodeller won't help me here...
+41In my case, i want to make a Mesh out of polylines with changing z-values over the line as well (public transport lines). I used a surfacedraper and a ascii grid to get the z-values, but the bufferer "deletes" them.
Any workaround tipps for me? If i understand this transformer right, the surfacemodeller won't help me here...
,
Could you share us the template file ( .FMWT )?
Thanks,
Danilo
+17Buffering is a 2D operation. That said it feels like you could take one copy of the lines and buffer them. Take another copy and put them into the draper as the breaklines (or the points/lines -- I'll let someone else advise or just experiment). Then put the buffered ones (now polygons) in to get Z values assigned.
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