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Shrink tool

Feb 11, 2014, 22:11
Post: #1
Shrink tool
This may be just an example of a general newbie misunderstanding about how to use Gimp, as I've had this *kind* of problem before - but an hour's searching has not turned up an answer. Please help.

I'm trying to use color-select to select an image that's in its own layer, then Shrink to shrink it. (I need to use Shrink, and not e.g. Scale Image, bc this image has to fit over another, larger version of the same image. If that makes sense.) Anyway, I can Select, and Shrink, but that leaves me with a dotted outline that shows what it WILL look like if I (so to speak) say to Gimp, "Yes, good, go ahead and do that." But it's THAT elementary final step I don't understand. HOW do I as it were say YES or ENTER or GO or whatever? As it is, whatever I do next simply cancels the shrink and takes me back to where I was.

I'm not exaggerating: I have read at least a dozen online explanations of how to use Shrink that do not explain this essential last step.
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Feb 11, 2014, 23:41 (This post was last modified: Feb 11, 2014 23:55 by fluffybunny2.)
Post: #2
RE: Shrink tool
(Feb 11, 2014 22:11)richardfarr Wrote:  This may be just an example of a general newbie misunderstanding about how to use Gimp, as I've had this *kind* of problem before - but an hour's searching has not turned up an answer. Please help.

I'm trying to use color-select to select an image that's in its own layer, then Shrink to shrink it. (I need to use Shrink, and not e.g. Scale Image, bc this image has to fit over another, larger version of the same image. If that makes sense.) Anyway, I can Select, and Shrink, but that leaves me with a dotted outline that shows what it WILL look like if I (so to speak) say to Gimp, "Yes, good, go ahead and do that." But it's THAT elementary final step I don't understand. HOW do I as it were say YES or ENTER or GO or whatever? As it is, whatever I do next simply cancels the shrink and takes me back to where I was.

I'm not exaggerating: I have read at least a dozen online explanations of how to use Shrink that do not explain this essential last step.
Hi Richard,
The 'shrink' I assume you are referring to is under the Selection menu?
Then that would explain your misunderstanding.
The select by color, simply creates a selection.
The Shrink command under the Selection menu does exactly that - Shrinks the current selection. Nothing more, how you decide to use this new selection is up to you. It does nothing to the image as such, just as selecting by color does nothing to the underlying image.
If you post the image you are working on and explain what the outcome you want to achieve is supposed to look like, I can provide the answer to solve your requirements.
Hope that clears things up a little for you.
Depending on your image, it might just be that you shrink your selection on the copy of the underlying image, then Selection->Invert then Edit->Clear.
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Feb 12, 2014, 00:47
Post: #3
RE: Shrink tool
(Feb 11, 2014 23:44)ofnuts Wrote:  I assume you are talking about the Scale tool (Scale) (if not this is what you should be using). When you use it, a side dialog pops up with current width and height, and four buttons. When you have scaled as you wish you just click on the "Scale" button to confirm.

NO - scale won't have the right effect because it changes the overall SIZE of the image. I need to shrink the borders of the image without changing e.g. the height or width. That's why I'm using (or trying to use) Select > Shrink
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Feb 12, 2014, 00:54
Post: #4
RE: Shrink tool
(Feb 11, 2014 23:41)fluffybunny2 Wrote:  
(Feb 11, 2014 22:11)richardfarr Wrote:  This may be just an example of a general newbie misunderstanding about how to use Gimp, as I've had this *kind* of problem before - but an hour's searching has not turned up an answer. Please help.

I'm trying to use color-select to select an image that's in its own layer, then Shrink to shrink it. (I need to use Shrink, and not e.g. Scale Image, bc this image has to fit over another, larger version of the same image. If that makes sense.) Anyway, I can Select, and Shrink, but that leaves me with a dotted outline that shows what it WILL look like if I (so to speak) say to Gimp, "Yes, good, go ahead and do that." But it's THAT elementary final step I don't understand. HOW do I as it were say YES or ENTER or GO or whatever? As it is, whatever I do next simply cancels the shrink and takes me back to where I was.

I'm not exaggerating: I have read at least a dozen online explanations of how to use Shrink that do not explain this essential last step.
Hi Richard,
The 'shrink' I assume you are referring to is under the Selection menu?
Then that would explain your misunderstanding.
The select by color, simply creates a selection.
The Shrink command under the Selection menu does exactly that - Shrinks the current selection. Nothing more, how you decide to use this new selection is up to you. It does nothing to the image as such, just as selecting by color does nothing to the underlying image.
If you post the image you are working on and explain what the outcome you want to achieve is supposed to look like, I can provide the answer to solve your requirements.
Hope that clears things up a little for you.
Depending on your image, it might just be that you shrink your selection on the copy of the underlying image, then Selection->Invert then Edit->Clear.

Aha! What I needed was Select > Invert / Edit > Clear / Select > None. It works. Though how anyone is supposed to work that out is a mystery to me! (My problem re learning the Gimp interface is summed up in your "how to use it is up to you" - the problem precisely was, I could not work out, having done it, any way at all of using it....) Thank you anyway.
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Feb 12, 2014, 02:28
Post: #5
RE: Shrink tool
(Feb 12, 2014 00:54)richardfarr Wrote:  
(Feb 11, 2014 23:41)fluffybunny2 Wrote:  
(Feb 11, 2014 22:11)richardfarr Wrote:  This may be just an example of a general newbie misunderstanding about how to use Gimp, as I've had this *kind* of problem before - but an hour's searching has not turned up an answer. Please help.

I'm trying to use color-select to select an image that's in its own layer, then Shrink to shrink it. (I need to use Shrink, and not e.g. Scale Image, bc this image has to fit over another, larger version of the same image. If that makes sense.) Anyway, I can Select, and Shrink, but that leaves me with a dotted outline that shows what it WILL look like if I (so to speak) say to Gimp, "Yes, good, go ahead and do that." But it's THAT elementary final step I don't understand. HOW do I as it were say YES or ENTER or GO or whatever? As it is, whatever I do next simply cancels the shrink and takes me back to where I was.

I'm not exaggerating: I have read at least a dozen online explanations of how to use Shrink that do not explain this essential last step.
Hi Richard,
The 'shrink' I assume you are referring to is under the Selection menu?
Then that would explain your misunderstanding.
The select by color, simply creates a selection.
The Shrink command under the Selection menu does exactly that - Shrinks the current selection. Nothing more, how you decide to use this new selection is up to you. It does nothing to the image as such, just as selecting by color does nothing to the underlying image.
If you post the image you are working on and explain what the outcome you want to achieve is supposed to look like, I can provide the answer to solve your requirements.
Hope that clears things up a little for you.
Depending on your image, it might just be that you shrink your selection on the copy of the underlying image, then Selection->Invert then Edit->Clear.

Aha! What I needed was Select > Invert / Edit > Clear / Select > None. It works. Though how anyone is supposed to work that out is a mystery to me! (My problem re learning the Gimp interface is summed up in your "how to use it is up to you" - the problem precisely was, I could not work out, having done it, any way at all of using it....) Thank you anyway.
Your welcome. It takes time to get to grips with this program. Understanding selections and how to use them is an important step.
Keep at it, it only gets easier Wink
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