[mkgmap-dev] [PATCH v4] contours

Fri Jul 10 13:37:20 BST 2009

On Thu, Jul 9, 2009 at 9:10 PM, Christian Gawron<christian.gawron at gmx.de> wrote:
>
> The CGIAR files are GeoTIFF files which cover 5x5 degrees. You can get them
> from http://srtm.csi.cgiar.org/. The ASTER data
> (http://asterweb.jpl.nasa.gov/gdem.asp) also comes as GeoTIFF files (each
> covering 1x1 degrees as the SRTM HGT files).

Hello Christian,

Thanks for your work on this: this is a great feature!

I was able to successfully compile a small area using ASTER tiles. The
resulting map looked correct.

However, I was not able to compile a larger area. I tried
Rheinland-Pfalz as downloaded from Geofabrik. If I understood the
error message and the coding correctly, this is because
Rheinland-Pfalz crosses the 1x1 ASTER tile boundaries: a map tile
compiled with your patch apparently must lie completely in the 1x1
ASTER boundary.

Is this correct?

If so, this would be an unfortunate limitation. It would require maps
to be split at exactly the 1 degree lat/long boundaries.

Or is this something that can be eventually coded around? I suppose
that this is less of an issue with the 5 degree CGIAR data.

Thanks and Cheers.