[Qgis-user] Reprojection of SRTM

[Bhaskaran]

Thanks Gerardo.  I have now understood that that the hillshade values are
birghtness values of the pixels. Yes, I did use the scale value of 111120.
My problem was partly due to incorrect installation of QGIS.

Thanks

On 8 October 2012 02:00, Gerardo Jimenez <gejst5 at hotmail.com> wrote:

> The hillshade value it ist not height. On another issue, If you used SRTM
> data, this comes in lat lon wgs84. I wonder if you used the 111120 value on
> the "ratio of vertical to horizontal units" option while producing the
> hillshade.
>
> Gerardo Jiménez Delgado
> Instituto de Investigaciones Antropológicas
> Universidad Nacional Autónoma de México
> Ciudad Universitaria s/n
> Coyoacan 04510 Mexico City
> Mexico 56 22 95 16
>
> ------------------------------
> Date: Sun, 7 Oct 2012 04:38:27 +0100
> From: bbkaran at gmail.com
> To: qgis-user at lists.osgeo.org
> Subject: [Qgis-user] Reprojection of SRTM
>
>
> Hi,
>
> I am new to QGIS.  The first thing I wanted to do was to create a
> hillshade for the Indian subcontinent using SRTM elevation data.
>
> The elevation map looks fine.  However, the hillshade looks strage with a
> max terrain value of 195 or so (it shold be 8000m).  I figured out that
> elevation data should be reprojected before attempting to draw hillshade.
> The question is reproject to what? What should be the target SRS?
>
> Please help.
>
> bbkaran
>
>
> _______________________________________________ Qgis-user mailing list
> Qgis-user at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-user
>
> _______________________________________________
> Qgis-user mailing list
> Qgis-user at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-user
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20121008/9901aa45/attachment.html>