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+--- Thread: Creating Sample Point (/Thread-Creating-Sample-Point)
Creating Sample Point - RussG - 12-15-2024
PLEASE NOTE: Within an hour or two of posting (below) I discovered the answer on my own. Everything I had read referred to Control-clicking. I should have known to try Command-clicking on Mac. D'oh!. That's the answer.
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Brand new to GIMP and struggling.
Running GIMP 2.10.38
Mac OS X 11.7.10
I've been using computers for a long time. Thinking about moving from my current mid-2015 MacBook Pro to a new M4 MacBook Pro. If I do that I will lose the ability to use my old standalone (non-subscription) version of PhotoShop CS6 so I'm looking at GIMP as a possible replacement and trying to see if I will be able to do what I want.
One of the things I can do in PhotoShop is to look at the RGB values of a point in an image while at the same time seeing what the values are as I change curves. levels, etc. This has been very valuable to me as I color correct and I've been trying to replicate or approximate this functionality in GIMP, and basically getting nowhere.
This brings me to creating sample points. This was the first step in the process in PhotoShop. It was simple: click the tool and then click the image and bingo, you had a sample point on the image and you could a number of them.
So far I have been unable to create a single sample point in GIMP. I have a copy of the GNU Image Manipulation Program User Manual November 17, 2021 which says "To create a sample point, Ctrl-click on one of the two measure rules of the image window and drag the mouse pointer. Two perpendicular guides appear. The sample point is where both guides intersect. You can see its coordinates in the lower left corner and the information bar of the image window. Release the mouse button." This doesn't work for me. If I control-click on the upper (horizontal ruler) and drag it puts a horizontal line on the image. There is no perpendicular guide. In order to create a perpendicular guide, or line, or whatever it is, I have to control-click on the vertical ruler. I don't think doing these things creates a sample point where the lines intersect or anywhere else for that matter as no sample points or shown in the Sample Points dialog.
Queries of AI bots Gemini and Copilot yield varying and differing instructions on creating sample points. Some of the instructions are impossible to follow and those that an be followed simple don't seem to work.
I'm not off to a good start with GIMP. Can you help? What am I missing?
Thanks.
RE: Creating Sample Point - Krikor - 12-15-2024
"To create a sample point, Ctrl-click on one of the two measurement rules of the image window and drag the mouse pointer. Two perpendicular guides appear. The sample point is where both guides intersect. You can see its coordinates in the lower left corner and the information bar of the image window. Release the mouse button."
This guidance is correct.
Are you actually clicking the ctrl key or the commmand key?
Considering your OS, the key should be command.
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