Proper use of the "Lineages" Parameter for Lineage Drivers

[jwalewski]

Hello,

I am attempting to run compute_lineage_drivers(), but no matter what value I set for "lineages" I keep getting a value error.:

  File "<string>", line 421, in combined_kernel_analysis
  File "/home/jw2894/.local/lib/python3.10/site-packages/cellrank/estimators/mixins/_lineage_drivers.py", line 137, in compute_lineage_drivers
    _ = fate_probs[lineages]
  File "/home/jw2894/.local/lib/python3.10/site-packages/cellrank/_utils/_lineage.py", line 305, in __getitem__
    obj = self.__getitem(item)
  File "/home/jw2894/.local/lib/python3.10/site-packages/cellrank/_utils/_lineage.py", line 424, in __getitem
    obj = super().__getitem__(item)
IndexError: only integers, slices (`:`), ellipsis (`...`), numpy.newaxis (`None`) and integer or boolean arrays are valid indices

The tutorial has it equal to lineages=["Delta"], for example, but when I've tried an array of strings containing the names of states of my cell population, I still get the same value error. I've also tried the slice [:] on my entire array, and other ways of setting the indices.

What's wrong with the way I'm doing it? Any insight is appreciated.