I can draw line chart with multiple columns, each for one line; or a single Y column with another column as group. But is it possible to do them at the same time?
e.g. I have some thing like
index | value X | value Y | Group
---------+----------------+------------+---------------
01 | 0.8 | 0.9 | A
01 | 0.7 | 0.75 | B
02 | 0.85 | 0.6 | A
02 | 0.7 | 0.55 | B
So I’d like to draw 4 lines in the line chart, i.e. value X for group A, value X for group B, value Y for group A, value Y for group B