Hi, my savior
After measuring 52 grayscale points with the colourspace ZRO, I found that my RGB separatation never had any data, all other charts did, see my attachment
May I ask what I have not set correctly?

Also, what does the CLIP chart mean please?
In order to simplify my understanding, I've deleted the data and only have 2 dots left, the first one is all (0,0,0) and the second one is (100,100,100), but the RGB lines in the chart are 0.0211,0,-0.0371 as shown in the attachment III.
Can you suggest where this data comes from?

Thank you very much for your help!

As is explained in the User Guides, you need matching R, G, & B primary measurements that match the grey scale measurements.

Steve

Steve
OH, thanks, I see, it needs R=G=B grayscale and separate R/G/B color grades, all four patterns together to be drawn

Thanks a lot Steve!

What about clip charts？
the User Guides are too short to understand them

Clip is as explained in the 'Reading ColourSpace Graphs' section of the Advanced Operation guide, as are all the graphs: https://lightillusion.com/advanced_operation.html#graphs

Steve

If you have bought Ted's calibration disk (BD-ISO, Media Files, or PGenerator), then you have access to some patchlists:

https://www.avsforum.com/threads/colourspace-zro-low-cost-manual-calibration-software-thread.3175441/post-61259901

The Quick Profile of Primary or Primary and Secondary will plot the RGB Separation graph.

Tick the AUTO radio button on your Profile luma so the software can automatically use your measured black/white measurements to generate the charts.