Edit: Yes, using a . However, now I'm getting crazy slope values, everything is around 90 degrees. It's a hillside vineyard, I don't think it's vertical.    I am trying to create a slope from a clipped DEM. The DEM is for a small plot of land, as you can see below. Each square is 30x30m.     The slope map is not registering values, just going from NaN to NaN.
I have a DEM layer from ASTER satellite and I want to get the slope information from it.  I use terrain analysis > slope, but the output is so wrong. Why is that?  Here is the DEM:     And here is the "Slope" that is totally wrong. It should stretch the values from 0 - 89.9097 but it does not.
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