World Files - Defining Image Rotation

[Flavio Hendry]

Hi David

maybe this helps:
http://en.wikipedia.org/wiki/World_file

Mit freundlichem Gruss / Best Regards
Flavio Hendry

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-----Original Message-----
From: "Fawcett, David" <David.Fawcett at STATE.MN.US>
To: MAPSERVER-USERS at LISTS.UMN.EDU
Date: Fri, 21 Dec 2007 23:34:36 -0600
Subject: [UMN_MAPSERVER-USERS] World Files - Defining Image Rotation

> After spending a lot of time with my friend Google, I have come to
> the conclusion that documentation on how to calculate the rotation
> parameters of a world file is very hard to find.  
> 
> I have an image that I would like to georeference and rotate using a
> world file.  If I want to rotate the image 43 degrees
> counter-clockwise, how do I go about calculating the rotation
> parameters in the world file?  
> 
> Here are the params that I have already determined
> 
> 0.177959962	pixel size x direction
>                 rotation x term
> 	        rotation y term
> 0.177941345	pixel size y direction
> 583930.6469	ul xcoord
> 4895626.67	ul ycoord
> 
> Thanks, 
> 
> David.