colour.utilities.has_only_nan¶
- colour.utilities.has_only_nan(a: ArrayLike) bool [source]¶
Return whether given array \(a\) contains only NaN values.
- Parameters
a (ArrayLike) – Array \(a\) to check whether it contains only NaN values.
- Returns
Whether array \(a\) contains only NaN values.
- Return type
Examples
>>> has_only_nan(None) True >>> has_only_nan([None, None]) True >>> has_only_nan([True, None]) False >>> has_only_nan([0.1, np.nan, 0.3]) False