imagevalue.gh (714.5 KB) How can {R,G,B} values be mapped to coordinate[x, y, z] format? Generating point coordinates from image RGB values is the objective. [Capture]

If you want values [0 255] use what @René_Corella tells you but don’t forget to put this option [image] [image] PS : for my uses, transformation using point could be quite perfect if each color mapped to [0,1] I use this for example to make some clustering then I can use, that is [0, 1] [ima…

[image] Mathew: How can {R,G,B} values be mapped to coordinate[x, y, z] format? Here is a guide for your reference. Grasshopper Online Document

[image] Mathew: How can {R,G,B} values be mapped to coordinate[x, y, z] format? look for the “SplitRGB” component, use the outputs as X, Y, Z for point construction.

You can plug directly a point component. Points will be inside a cube withbrange -1 to 1.

The output of ARGB component produces RGB values independently, with an auto-sort function for each category of R, G, and B. That means I’d have to match data again with some indexing components and merge it again. Don’t know yet… Gotta try later.

You mean…? How does this contribute to my problem? [Capture]

[image] Mathew: Generating point coordinates You ask for it you got it ! RGB with integer from 0 to 255 is a convention, points with coordinates from [-1 to 1] is another.

You suggest it’s similar to a REMAP, but what if you simply want the exact RGB map to xyz?

Maybe use REMAP again and update the domain? LOL

[image] Mathew: Don’t know yet… Gotta try later. Additional insight: [image]

RGB image mapping to point coordinates, HOW?

Grasshopper

Mathew3 (Mathew) May 6, 2026, 8:10pm 12

I’m taking notes right now. It’s a productive day!

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RGB image mapping to point coordinates, HOW?

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