Yes, only the zero contours are needed. They represent the macro topography which are later reinterpolated and subtracted from the original DTM.
It works when testing in a smaller region, so I don't think that is the issue... On Mar 8, 2013 4:43 PM, "Hamish" <[email protected]> wrote: > Eric wrote: > > The command used to run r.contours: > > grass.run_command("r.contour", input=lp_subtract, > > output=LP_contour, minlevel=0, maxlevel=0, step=10) > > > minlevel and maxlevel are the same? > > > Hamish >
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