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

Michael Barton michael.barton at asu.edu
Wed Nov 15 09:54:08 EST 2006


I'll look some more. There is some kind of inconsistent behavior, but I'm
not sure what it is.

Michael Barton, Professor of Anthropology
School of Human Evolution & Social Change
Center for Social Dynamics & Complexity
Arizona State University

phone: 480-965-6213
fax: 480-965-7671
www: http://www.public.asu.edu/~cmbarton

> From: Paul Kelly <paul-grass at stjohnspoint.co.uk>
> Date: Wed, 15 Nov 2006 08:55:43 +0000 (GMT)
> To: Michael Barton <michael.barton at asu.edu>
> Cc: "Patton, Eric" <epatton at nrcan.gc.ca>, <grass-dev at grass.itc.it>
> Subject: Re: [GRASS-dev] Error in redrawing text layer in gis.m
> 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.
> Paul

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