is there a command line tool to rotate large(huge) TIFFs?
Tyler Mitchell
tylermitchell at SHAW.CA
Mon Nov 29 18:39:41 PST 2004
Bizarre, how come when I search for something I know nothing about, I end up
finding an email from myself (sometimes with the solution). Wow. Anyway,
these were interesting pages:
http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?RotatingImages
http://mapserver.gis.umn.edu/cgi-bin/wiki.pl?MapRotation
Tyler
On November 29, 2004 06:35 pm, Frank Warmerdam wrote:
> Merrett, Mike wrote:
> > Hi:
> > Does anyone know of a command line tool that will rotate tiff's
> > 24.9degrees counter clockwise?
> >
> > I have the 4 tiffs which I have rotated with Photoshop - but
> > when I try to combine them (and then rotate them) Photoshop blows says
> > too big
> >
> > I believe I can combine them and then split them up again with
> > GDAL tiff tools - but how to rotate them?
>
> Mike,
>
> If you can associate world files with them that describe the rotation you
> want undone then you can use gdalwarp to rotate them. Alternatively if you
> can associate control points with the corners, GDAL can work from that.
> But there isn't any pure "rotate by angle" type operation conveniently
> available in GDAL.
>
> You can contact me directly if you have questions about how to associate
> GCPs with an image, or how to setup a world file.
>
> Best regards,
>
> --
> ---------------------------------------+-----------------------------------
>--- I set the clouds in motion - turn up | Frank Warmerdam,
> warmerdam at pobox.com light and sound - activate the windows |
> http://pobox.com/~warmerdam and watch the world go round - Rush |
> Geospatial Programmer for Rent
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