I downloaded Mars HiRise DTM .IMG files and they load fine and generate contours fine. When I try to create an STL using DEMto3D to print it on the 3D printer I can't export it because I cannot put any value in the height field... I get an error if I put in any positive value that that says:
Height of the base must be lower than DEM highest point.
Well the highest point is a NEGATIVE altitude. The DTM goes from -3190 up to -2050... As soon as you put a negative sign in the height field it generates a "ValueError:could not convert string to float"
There is no good documentation at all on the DEMto3D plugin so I have to ask here if I can somehow fool the data to get an STL out of this?