Square Contours

[luckyphil78]

Hi, Ive obtained some free data DEM from the USGS, namely the ASTGDEMv2 and im trying to use the rasters to produce some contours but they are squareish.

Ive tried to project the rasters and change the re-sampling technique to bilinear, as well as use the raster contouring tool in the 3D extension.


Im out of ideas.  Any tip on how to make the contours curved?

Thanks in advance.

[GeraldineEGGERMONT]

Hi Philip,

You problem with the resolution of USGS DEM is mentioned here. Maybe you should just download the newer datasets. Techniques to create smoother contours are described in this page as well (e.g. using Focal Statistics to smooth the input ratser).

If you have a Desktop Standard license, you can also use the Smooth Line tool. And there is a Smooth command in the Advanced Editing toolbar to smooth lines in an edit session.