[GRASS-user] Apparent missing elevation values

[Crutchley, Simon]

I'm new to GRASS. I've tried using my own data and am hitting a problem I don't understand. I've an elevation dataset with values ranging from 36-98m. The histogram shows a range of values. When I run profile analysis it says every point is 45.5m. Screen dumps show my data with the histogram and profile (NFor) as well as that for the test dataset (NCar). Am I doing something basic wrong?

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