[tclc]

Hi

I'm new to GIMP. I want to use it to create/test colour (or greyscale) separations for a woodcut, but I'm finding it hard.

For example I have attached a black and white image.  kirsty.JPG (84.7K)
Number of downloads: 3

I open the image in GIMP, then from Image I choose mode - indexed, 4 colours. So far so good as this gives me the 4 greyscale levels I need to create a two block woodcut. Now I use the 'select by colour' tool to find the first colour, and I paste this into a new layer. That works fine. Then I select the next colour and try to paste that into a second new layer, but it doesn't work. It produces another layer called 'Floating Selection (pasted layer)' and won't paste the second or third layers.

How can I separate the 4 layers into individual images??


Thanks.

[alexstandiford]

tclc, on 03 August 2012 - 09:12 AM, said:

Hi

I'm new to GIMP. I want to use it to create/test colour (or greyscale) separations for a woodcut, but I'm finding it hard.

For example I have attached a black and white image. kirsty.JPG

I open the image in GIMP, then from Image I choose mode - indexed, 4 colours. So far so good as this gives me the 4 greyscale levels I need to create a two block woodcut. Now I use the 'select by colour' tool to find the first colour, and I paste this into a new layer. That works fine. Then I select the next colour and try to paste that into a second new layer, but it doesn't work. It produces another layer called 'Floating Selection (pasted layer)' and won't paste the second or third layers.

How can I separate the 4 layers into individual images??


Thanks.

I actually just answered this question for a gimp user on my website the other day. Here is the post on it:

http://gimpedtutoria...te-in-gimp-2-8/

It explains what floating selections are, and how to use them when you're trying to copy and paste in gimp 2.8

[tclc]

alexstandiford, on 03 August 2012 - 11:13 AM, said:

tclc, on 03 August 2012 - 09:12 AM, said:

Hi

I'm new to GIMP. I want to use it to create/test colour (or greyscale) separations for a woodcut, but I'm finding it hard.

For example I have attached a black and white image. kirsty.JPG

I open the image in GIMP, then from Image I choose mode - indexed, 4 colours. So far so good as this gives me the 4 greyscale levels I need to create a two block woodcut. Now I use the 'select by colour' tool to find the first colour, and I paste this into a new layer. That works fine. Then I select the next colour and try to paste that into a second new layer, but it doesn't work. It produces another layer called 'Floating Selection (pasted layer)' and won't paste the second or third layers.

How can I separate the 4 layers into individual images??


Thanks.

I actually just answered this question for a gimp user on my website the other day. Here is the post on it:

http://gimpedtutoria...te-in-gimp-2-8/

It explains what floating selections are, and how to use them when you're trying to copy and paste in gimp 2.8

Thanks for this, but for some reason I cannot access your link. I get an Error 138 "access denied" though I can access the rest of the internet just fine. I'll try again tomorrow. Any ideas? Any chance you could cut and paste the entry?

Thanks again

[rich2005]

tclc, on 03 August 2012 - 09:12 AM, said:

Hi

I'm new to GIMP. I want to use it to create/test colour (or greyscale) separations for a woodcut, but I'm finding it hard.

For example I have attached a black and white image. kirsty.JPG

I open the image in GIMP, then from Image I choose mode - indexed, 4 colours. So far so good as this gives me the 4 greyscale levels I need to create a two block woodcut. Now I use the 'select by colour' tool to find the first colour, and I paste this into a new layer. That works fine. Then I select the next colour and try to paste that into a second new layer, but it doesn't work. It produces another layer called 'Floating Selection (pasted layer)' and won't paste the second or third layers.

How can I separate the 4 layers into individual images??


Thanks.

You need to anchor the floating selection. Little anchor icon bottom right in the layers dialog.

Why try and save as layers if you want individual images?

Using your image in indexed (4 colours) mode.
Select using the color-selection-tool
Copy
Paste as a new image. This will have transparency, so remove if required (colours -> transparency menu).
Repeat for next colour. (Select -> copy -> paste as new image)
If any of the colours are close to each other (ambiguous) bring up the colormap dialog and use the color picker tool. Clicking in the image brings up a border in the colormap for the corresponding colour. Use that location with the select-by-color tool.

My stab at what I think you mean.
screenshot http://www.imageno.c...lxeqdp1pic.html

Of course if you do want as layers you can always import the 4 separate images by using File -> open as layers.

This post has been edited by rich2005: 06 August 2012 - 07:12 PM

[tclc]

rich2005, on 06 August 2012 - 07:10 PM, said:

tclc, on 03 August 2012 - 09:12 AM, said:

Hi

I'm new to GIMP. I want to use it to create/test colour (or greyscale) separations for a woodcut, but I'm finding it hard.

For example I have attached a black and white image. kirsty.JPG

I open the image in GIMP, then from Image I choose mode - indexed, 4 colours. So far so good as this gives me the 4 greyscale levels I need to create a two block woodcut. Now I use the 'select by colour' tool to find the first colour, and I paste this into a new layer. That works fine. Then I select the next colour and try to paste that into a second new layer, but it doesn't work. It produces another layer called 'Floating Selection (pasted layer)' and won't paste the second or third layers.

How can I separate the 4 layers into individual images??


Thanks.

You need to anchor the floating selection. Little anchor icon bottom right in the layers dialog.

Why try and save as layers if you want individual images?

Using your image in indexed (4 colours) mode.
Select using the color-selection-tool
Copy
Paste as a new image. This will have transparency, so remove if required (colours -> transparency menu).
Repeat for next colour. (Select -> copy -> paste as new image)
If any of the colours are close to each other (ambiguous) bring up the colormap dialog and use the color picker tool. Clicking in the image brings up a border in the colormap for the corresponding colour. Use that location with the select-by-color tool.

My stab at what I think you mean.
screenshot http://www.imageno.c...lxeqdp1pic.html

Of course if you do want as layers you can always import the 4 separate images by using File -> open as layers.

Brilliant! Many thanks. Your stab is exactly what I needed.