I think I messed up all the files, so this is the correct set of data: ti1, ti2 and the ti3 that is scanned with a known spectro: i1Pro1 (to be used as a reference file to build a new ti3 using the date from the CR30 obtained scandata in csv-format) + the csv-file based on the LAB + spectral data from 400-700 nm obtained by scanning with the Aliexpress CR30 colorimeter.
Yep that works now, before you rescan, the last remaining step is that the csv needs unique per-patch names that we can match to SAMPLE_LOC of the .ti2 (e.g. A1, B2 etc.). Right now I'm just matching the closest values but that is not accurate or reliable. I noticed from the screenshots that there are quite some measurement parameters available, see if you can include a reproduceable index to the csv, so we can match the measurement to the correct SAMPLE_LOC
Unfortunately it is not possible but what I can do is make a new target and choose not to randomize the patch layout (standard setting in printtarg command) so the data layout in ti1 and ti2 are in line with another making comparison easier. I keep your informed many thanks for all your work and help already Thanks