I have a input data file with a unique ID (BORRHAL_NR) with 2 variables (Date/Granvattenniva). I am using a python caller in a CT to generate a chart with matplotlib.
I would like to produce as many charts as unique IDs, and I am using the group by in the custom transformer but even though it produces in this case 4 charts I see that is using all data from all unique IDs in those charts (except for the first one that is actually correct).
Any ideas?
I am using FME 2022.2.4. (Build 22792)