[Qgis-user] Wrong values if DEM in grid format is reprojected

[Goyo]

2014-12-09 11:09 GMT+01:00 Agustin Lobo <alobolistas at gmail.com>:
> I'm using a DEM in esri grid format
> (see http://www.icc.cat/eng/Home-ICC/Geoinformacio-digital/Sobre-la-geoinformacio-ICGC/Models-Digitals-d-Elevacions)
> which consisits on a txt file with the data and an xml file with the metadata.
> The projection is UTM31N on ETRS89 datum (EPSG:25831)
>
> If I display the layer on a project with the same EPSG:25831 there is
> no problem,
> but if I set the project projection to Geographic coordinates in WGS84
> (EPSG:4326),
> while the grey shades look coorrect and the coordinates are correct, the
> actual values are totally wrong: values such as 7.999140e-136.

This looks like a bug to me. I remember using the value and identify
tools with reprojected rasters in the pasts (geotiff, but the format
should be irrelevant).

Goyo