[ gpsdrive ] Topo website questions

[Hamish]

not a webot wrote:
>  Can anyone figure out how to harvest topos from this website?
> http://atlas.nrcan.gc.ca/site/english/maps/topo/map

not me, sorry.

> I'm trying to harvest topo maps for eastern Ontario. Is there anyplace
> where data sets are available?

idea: import SRTM data into GRASS GIS and use the r.contour module to
make contour lines, then export images with the d.out.gpsdrive module.
see the GRASS newsletter archive for tutorials.

> A feature that would be nice is a third map type, in my case I'd like
> to switch between road maps, topos and navigational charts (boat maps)

Note that the "map types" are very misleading, and IMO should be
changed. It has absolutely nothing to do with content, rather it deals
with map projection, ie if the source data was lat/lon Plate Carrée
(degree based; 1 deg lat == 1 deg lon scaling) or projected (feet/meters
based, e.g. UTM; ground distance is scaled the same in all directions).


Hamish