[FIX] Select Rows: Removing Unused Values for Discrete Variables in Sparse Data #2452
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Issue
When
remove unused features
is checked in Select Rows and some discrete variable comes from sparse data, Orange crashes withAttributeError: ravel not found
error.The problem is in the
remove_unused_values
method (Orange/preprocess/remove.py
) which cannot handle sparse matrices.Issue: https://sentry.io/biolab/orange3/issues/269413491/
Description of changes
nanunique
function.nanunique
returns unique values without missing (np.nan
) values and works on sparse and dense matrices.remove_unused_values
to usenanunique
and hance support sparse discrete columns.Includes