Repository navigation
describe_by(groups) (and describe(axis, groups)) gives wrong result for std and percentiles #1124
Description
>>> arr = ndtest((3, 4))
>>> arr.describe('a', 'b0,b1 >> b01;b1,b2 >> b12')
>>> arr.describe_by('b0,b1 >> b01;b1,b2 >> b12')
b\statistic count mean std min 25% 50% 75% max
b01 6.0 4.5 0.0 0.0 2.25 4.5 6.75 9.0
b12 6.0 5.5 0.0 1.0 3.25 5.5 7.75 10.0The correct result should be:
b\statistic count mean std min 25% 50% 75% max
b01 6.0 4.5 3.6193922141707713 0.0 1.75 4.5 7.25 9.0
b12 6.0 5.5 3.6193922141707713 1.0 2.75 5.5 8.25 10.0For example:
>>> arr['b0,b1'].describe()
statistic count mean std min 25% 50% 75% max
6.0 4.5 3.6193922141707713 0.0 1.75 4.5 7.25 9.0I think this is related to #1118. In fact, I think these are two different symptoms for the same bug: because of the way group aggregates and axis aggregates are not done at the same time.
Activity
gdementen commentedon Nov 29, 2024
The good news is the issue is already solved in my big refactor branch... The bad news is that branch still needs a lot of work to be ready.