[GRASS-user] re: r.out.gdal Terragen format

[Markus Metz]

patrick dolan wrote:
> Hello,
>
> I'm attempting to export a DEM to a terragen file and I've run into the
> following error message.
>
> ERROR 1: Inverted, flat, or unspecified span for Terragen file.

Maybe the span of elevation values was not specified?
From
http://www.gdal.org/frmt_terragen.html
Set the MINUSERPIXELVALUE option (a float) to the lowest elevation of
your elevation data, and MAXUSERPIXELVALUE to the highest.

>
> There isn't a great deal of lit in the manual regarding terragen exports,
> and I'm wondering if anyone has any personal experience doing it, or knows a
> better method.
>
> Patrick Dolan
> Dept. of Anthropology
> Washington State University
>
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