[Qgis-user] Reprojection of SRTM

[Gerardo Jimenez]

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



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