[Qgis-user] downsample dem in qgis?

Chris Henrick chrishenrick at gmail.com
Thu Sep 20 10:28:15 PDT 2012


thanks Micha. I'll give it a shot.

Have you worked with downsampling dems to create hillshades? I'm wondering
if there is a general resolution to scale ratio one could abide by to
create appropriately detailed hillshades...

-Chris


On Wed, Sep 19, 2012 at 11:15 PM, Micha Silver <micha at arava.co.il> wrote:

>  I think the way to do this is with gdalwarp. Use the -tr (target
> resolution) parameter and -r (resampling method) to get the resolution you
> want.
>
>
> On 19/09/2012 23:04, Chris Henrick wrote:
>
> Hello, I've read in the gdal wiki that there is the potential to
> downsample a dem when using gdal_translate. However I cannot figure out
> what parameters to set in order to do so if running the command from either
> QGIS or shell.
>
>  My goal is to downsample dems to make more generalized shaded reliefs.
>
>  Any advice would be appreciated, I'm on mac os 10.6 with qgis 1.8.
>
>  regards,
>
> -Chris
>
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> --
> Micha Silver
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>
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