Feature request: Take a subset of samples for a specific set of features #376
Description
Can we take only some samples for a specific set of features? For example, if I have features:
| Feature1 | Feature2 |
|---|---|
| A | X |
| A | X |
| A | X |
| A | Y |
| A | Y |
| A | Y |
| B | X |
| B | Y |
can I do grouping based on Feature2 only where Feature1 == "A" without generating the extra groups where Feature1 == "B"?