sklearn.utils.validation.column_or_1d¶
- sklearn.utils.validation.column_or_1d(y, *, dtype=None, warn=False)[source]¶
Ravel column or 1d numpy array, else raises an error.
- Parameters:
- yarray-like
Input data.
- dtypedata-type, default=None
Data type for
y.New in version 1.2.
- warnbool, default=False
To control display of warnings.
- Returns:
- yndarray
Output data.
- Raises:
- ValueError
If
yis not a 1D array or a 2D array with a single row or column.