Re: rotating a rectangular image in Gimp

[Ken Irving <fnkci@uaf.edu>]

On Wed, Mar 05, 2008 at 04:53:02PM -0800, PETER EASTHOPE wrote:
> Folk,
> 
> To rotate a rectangular image by 90 degrees 
> in Gimp, I followed these steps.
> * Expand the canvas to a square containing the image, centered.
> * Rotate 90 degrees.
> * Contract the canvas to the boundary of the image.
> If I just rotate without changing the canvas, the 
> image is cropped.
> 
> Does anyone have a way to achieve the rotation 
> in one step?  As trivial a problem as this is, 
> I didn't see it mentioned in the Web based manual.
> 
> Thanks for any ideas,       ... Peter E.

I don't know about Gimp, but ImageMagick convert can do this; e.g.:

  $ convert -rotate 90 input.jpg output.jpg

-- 
Ken Irving, fnkci+debianuser@uaf.edu