[Gimp-user] Image substraction available?

2005-04-12 Thread Peter Nabbefeld
Hello, is it possible to substract one image from another? Probably setting all identical pixels to transparent? Kind regards Peter Nabbefeld ___ Gimp-user mailing list Gimp-user@lists.xcf.berkeley.edu http://lists.xcf.berkeley.edu/mailman/listinfo/gimp

Re: [Gimp-user] Alpha Channel

2005-04-12 Thread Malcolm Tredinnick
On Wed, 2005-04-13 at 01:47 +0200, cedric wrote: > I wonder why, when Opening or creating a document, there are only 3 > color channel and then, when creatin a layer, the alpha is coming. What > this stand for ? The default setting for a new document is the RGB colorspace with the document filled

[Gimp-user] Alpha Channel

2005-04-12 Thread cedric
I wonder why, when Opening or creating a document, there are only 3 color channel and then, when creatin a layer, the alpha is coming. What this stand for ? Cedric ___ Gimp-user mailing list Gimp-user@lists.xcf.berkeley.edu http://lists.xcf.berkeley.edu/

Re: [Gimp-user] Preserve transparency in a TIFF

2005-04-12 Thread Gregory Yetman
Hi Sven, I'm using version 2.2.4. I've figured out what the problem was -- the image wasn't in RGB mode, it was 'indexed', which I guess doesn't support the alpha channel in TIFF. Thanks, Greg -- Gregory Yetman Center for Inte

Re: [Gimp-user] Preserve transparency in a TIFF

2005-04-12 Thread Sven Neumann
Hi, Gregory Yetman <[EMAIL PROTECTED]> writes: > I don't have multiple layers, my transparency is in an 'alpha' > channel. The GIMP TIFF plug-in supports saving single-layer images with alpha channel. You shouldn't get an export dialog. What version of GIMP are you using? Sven

Re: [Gimp-user] changing the size of selections in GIMP

2005-04-12 Thread Carol Spears
On Tue, Apr 12, 2005 at 07:53:18PM +0200, Andreas Waechter wrote: > Gabor Istvan wrote: > >I've already asked this but haven't got any response. > >How can I change a selection's (eg rectangle) size without > >reselecting again? > > The scale tool (as well as move, rotate, shear, change > perspe

Re: [Gimp-user] changing the size of selections in GIMP

2005-04-12 Thread Andreas Waechter
Gabor Istvan wrote: I've already asked this but haven't got any response. How can I change a selection's (eg rectangle) size without reselecting again? The scale tool (as well as move, rotate, shear, change perspective and flip tools) can be applied to a selection as well as to a layer. Andreas

[Gimp-user] Re: changing the size of selections in GIMP

2005-04-12 Thread Olivier Ripoll
Gabor Istvan wrote: Dear list members: I've already asked this but haven't got any response. How can I change a selection's (eg rectangle) size without reselecting again? Thanks, IG You can increase or shrink the selection by a given amount of pixels with Select->Grow and Select->Shrink respectiv

[Gimp-user] changing the size of selections in GIMP

2005-04-12 Thread Gabor Istvan
Dear list members: I've already asked this but haven't got any response. How can I change a selection's (eg rectangle) size without reselecting again? Thanks, IG ___ Gimp-user mailing list Gimp-user@lists.xcf.berkeley.edu http://lists.xcf.berkeley.edu

Re: [Gimp-user] Preserve transparency in a TIFF

2005-04-12 Thread Gregory Yetman
Hi Eric, I don't have multiple layers, my transparency is in an 'alpha' channel, so there is no 'merge layers' available. I can add a new layer, but I'm not sure how to get it to show transparent areas. Greg -- Gregory Yetman C