[GRASS-dev] Error in redrawing text layer in gis.m

Paul Kelly paul-grass at stjohnspoint.co.uk
Wed Nov 15 03:55:43 EST 2006

On Tue, 14 Nov 2006, Michael Barton wrote:

> Eric,
> I think the issue is with d.grid. In normal mode, you draw a geographic
> (projected) grid in a projected location. If you check the geodesic grid box
> (a flag in d.grid), it allows you to enter latlon coordinates into the grid
> spacing parameters. BUT I think this only works in latlon locations.
> Spearfish is a UTM location, so you need to use it in geographic mode, not
> geodesic mode.

No, the geodetic grid option works in projected locations - in fact that's 
the whole point of it. I used it just the other day - see 
http://www.stjohnspoint.co.uk/gis/total-coverage.png for an example of 
what it looks like. This option is pointless in lat/long locations as the 
grid would be in lat/long co-ordinates anyway. In 6.3 there is another 
option, -w to draw the geodetic grid referenced to the WGS84 ellipsoid 
rather than the projected ellipsoid.


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