On the contrary !
That makes no sense is to perform always the same association between map
coordinate system and screen coordinate system. In prove, we have a scale
but no other simple transformation.
I understand that practice, but as soon as you use the map on the field, you
will warp the map. And it is the context, a aircraft on the sky. The map
window must display a map, not a partial map. And I want a map wholly
usable, for example I keep a coordinates query with mouse.
Wrapping the map is a common pilot pratice. Grass is not fixed. My needs are
especially viewer needs.
Jérôme
----- Original Message -----
From: "Vincent Bain" <b...@toraval.fr>
To: "Jérôme - GeoRezo.net" <jer...@georezo.net>
Cc: <grass-user@lists.osgeo.org>
Sent: Wednesday, April 15, 2009 7:28 PM
Subject: Re: [GRASS-user] Rotate a map display
Jérôme,
If you need to warp a map for a strict display purpose, IMHO it's not to
be performed from within grass given that this operation makes no sense
"geographically". Don't know what the context is, but if you just have
to rotate an image output of a map maybe you'd better look towards image
manipulation tools (e.g. imagemagick and the -rotate option, which can
easily be integrated in a script process).
Let us know a bit more about your needs !
Vincent
Le mercredi 15 avril 2009 à 10:22 +0200, Jérôme - GeoRezo.net a écrit :
Hello,
I want to make a map which follow a mobile. So I will have a set of
raster maps
and a polyline which represent a the path. One main feature is that map
could
follow the mobile's route.
The y-axis could be the mobile'direction. My question is how can I do
this.
Best regards,
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