R: [GRASS-windows] elevation data error?

[Simon Watkins]

Hi Marco,

Thanks for your very prompt reply.  I just tried that but no luck alas.  It
seems to me like this is being treated as a 2D raster with no elevation data
but I guess  I don't really know enough about formats and such yet.  This is
only a personal project, with no real urgency about it so I'll just keep
plugging away and hope I figure it out.

Simon.

On Mon, Jun 9, 2008 at 9:36 AM, <marco.pasetti at alice.it> wrote:

>  Hi Simon,
>
> did you set the z-exag parameter?
> Since lat/long data are in decimal degrees while elevation is in meters,
> you must set the correct value for the z-exag parameter.
> The transformation from decimal degrees to meters is not univocal, because
> it depends on the geographic zone you're working on, but we can assume a
> generic (mean)transformation value and set the z-exag as follows:
>
> in the z-exag field type 8.9606e-6 and then enter
>
> I hope this helps,
>
> Marco
>
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