[ gpsdrive ] pdf -> gpsdrive

[Hamish]

Pat wrote:
>  I've found good, free topo maps and nav charts (boat maps) for
> Canada.

I've added the link to this site, with some comments about how to use:
 http://grass.gdf-hannover.de/wiki/Export_for_GpsDrive

[check back for more soon]

e.g. apparently it uses the NAD83 datum, not WGS84 like the GPS does,
but that's a very minor point and probably not worth worrying about.
(?)

where are the nav charts? I only see land.

> These are in PDF or gifs does anyone have any ideas on how to import
> these?
>
> http://toporama.cits.rncan.gc.ca/toporama_en.html

where are the PDFs?
better to use the Tiffs below, if they are in fact GeoTiffs (ie tiffs
with geo-coding information embedded in them as metadata).

>  There is another site that has XML downloads
> 
> see http://ftp2.cits.rncan.gc.ca/pub/canmatrix/50k_300dpi/031/e/

if you download a Tiff block from there, what does gdalinfo say about
it?  (http://gdal.osgeo.org)

Probably you can just download your block and run gdal_slice.sh to make
your GpsDrive tiles.


Hamish



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