[GRASS-user] Rotate a map display

[Cuinet Jérôme]

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" <bain at toraval.fr>
To: "Jérôme - GeoRezo.net" <jerome at georezo.net>
Cc: <grass-user at 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,
>>
>
>