Why is select sampled colour not working?

[TheOtherNiki]

What am I doing wrong here? I've tried the tolerance on each end of the scale, tried each different model. It's literally black and white, so it should be able to distinguish between the two. Photo is rasterized. The sampled colour is black. Why isn't it selecting the black?

[NotMyFault]

It would help if you include the layer panel into the screenshot, and the channels panel (large enough to show the thumbnail of pixel selection)

Maybe wrong layer selected in layer stack.

Sometimes the marching ants are unreliable (but the channels panel will show)

to check that it works: add a few large colored spots by brush (red, blue, green), then try again.

you need to mouse-click on a pixel having the color you want to select. Try the RGB colored spots, then the black text or white background 

[TheOtherNiki]

On 2/27/2022 at 2:54 AM, NotMyFault said:

It would help if you include the layer panel into the screenshot, and the channels panel (large enough to show the thumbnail of pixel selection)

Maybe wrong layer selected in layer stack.

Sometimes the marching ants are unreliable (but the channels panel will show)

to check that it works: add a few large colored spots by brush (red, blue, green), then try again.

you need to mouse-click on a pixel having the color you want to select. Try the RGB colored spots, then the black text or white background 

There's only one layer in the layer stack. If I try to erase the white bits, the black erases too. 

[smadell]

I know you said this is a rasterized layer.  Nonetheless, try rasterizing it again. I have found that, occasionally, even a minimal change can cause a layer to act like it’s not really rasterized. I don’t know exactly why this can happen (haven’t yet figured out the “recipe”) but when I come upon an operation that ought to work, but just doesn’t, rasterizing again sometimes lets me proceed.

[carl123]

On 2/27/2022 at 1:23 AM, TheOtherNiki said:

The sampled colour is black. Why isn't it selecting the black?

How are you sampling the colour?

You should just be clicking with the cursor on the black (or white) in the image after the Select Sampled Colour command, then click the Apply button

 

 

[TheOtherNiki]

39 minutes ago, carl123 said:

How are you sampling the colour?

You should just be clicking with the cursor on the black (or white) in the image after the Select Sampled Colour command, then click the Apply button

 

 

I usually click on the eyedropper, select the colour, then double click the colour that the eyedropper sampled to get it into the colour circle on the left.

[Old Bruce]

5 minutes ago, TheOtherNiki said:

I usually click on the eyedropper, select the colour, then double click the colour that the eyedropper sampled to get it into the colour circle on the left.

You shouldn't have to double click.

[TheOtherNiki]

5 minutes ago, Old Bruce said:

You shouldn't have to double click.

Right, for sampled colour. I was thinking of when I want to use the sampled colour. Then I have to double click.

[walt.farrell]

8 minutes ago, TheOtherNiki said:

Right, for sampled colour. I was thinking of when I want to use the sampled colour. Then I have to double click.

If you're using the eyedropper in the Color panel (or Swatches panel, or the other places), not the Color Picker Tool, then you:

1. Drag the eyedropper to the spot you want to sample. This fills the small color well that is part of the sampler.

2. Then to apply the color you click once on the sampler again. This applies it to the selected object and transfers it to the large color well.

[walt.farrell]

But none of that is related to Select Sampled Color. 

 

[TheOtherNiki]

19 minutes ago, walt.farrell said:

But none of that is related to Select Sampled Color. 

 

Nope. We've gotten off track. Lol.

[carl123]

11 hours ago, TheOtherNiki said:

I usually click on the eyedropper, select the colour, then double click the colour that the eyedropper sampled to get it into the colour circle on the left.

You don't use/need the eyedropper to select the colour

Use the mouse cursor and click on the image the colour you want to sample

From the help file...

To create a pixel selection from a sampled colour:

1. Select the pixel layer containing the colour to be sampled.
2. From the Select menu, choose Select Sampled Colour.
3. Click on the colour to be sampled.
4. Adjust the settings in the dialog.
5. Click Apply.

[TheOtherNiki]

8 hours ago, carl123 said:

You don't use/need the eyedropper to select the colour

Use the mouse cursor and click on the image the colour you want to sample

From the help file...

To create a pixel selection from a sampled colour:

1. Select the pixel layer containing the colour to be sampled.
2. From the Select menu, choose Select Sampled Colour.
3. Click on the colour to be sampled.
4. Adjust the settings in the dialog.
5. Click Apply.

But even so, I've got the colour sampled already, regardless of how it was done. So why isn't it actually selecting the sampled colour?

[walt.farrell]

1 minute ago, TheOtherNiki said:

But even so, I've got the colour sampled already, regardless of how it was done. So why isn't it actually selecting the sampled colour?

Because Select Sampled Color doesn't work that way. You must do it like the Help says, clicking the menu option and then clicking on the pixel layer to sample the color.

 

[R C-R]

4 hours ago, TheOtherNiki said:

But even so, I've got the colour sampled already, regardless of how it was done. So why isn't it actually selecting the sampled colour?

The color you sample with Select Sampled Color is independent of & unrelated to any of the colors set elsewhere in the UI, like in the color wells of the Colors panel. So unlike those wells, when sampling colors you have a choice of tolerances & sampling models (RGB Cube, CIELab Cube, etc.).