[Qgis-user] Slope not calculating correctly

G. Allegri giohappy at gmail.com
Tue Apr 10 03:45:36 PDT 2012


You're SRTM has geographical CRS (WGS84). You must keep into account when
doing morphological analysis. If you reproject it to a planar projections
(e.g. UTM) the results are correct.

giovanni

2012/4/10 Rudi Thiede <rudi at linfiniti.com>

> I've got a DEM, basically a cut-out of SRTM data. Trying to calculate its
> slope gives me extremely weird output, such that all values are >89 degrees.
>
> Dataset: http://linfiniti.com/~rudi/SRTM.zip
>
> Can anyone confirm? I'm suspecting a local issue though, not the data ...
>
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