As mentioned above, trying to bucket and order column a in asc and then segment by column b value and also order aolumn b in asc order.
Is this possible to do on foundry currently to generate a chart?
Out of curiosity, does doing both sorts for a and b before bucketting achieve the desired result?
Can you please provide a screenshot or some sample values for column a and column b? What data types are these? It might be possible to solve this using Workshop’s chart configuration panel without TS.