colour.utilities.as_float#

colour.utilities.as_float(a: ArrayLike, dtype: Type[DTypeFloat] | None = None) → NDArrayFloat[source]#

Attempt to convert given variable \(a\) to numpy.floating using given numpy.dtype. If variable \(a\) is not a scalar or 0-dimensional, it is converted to numpy.ndarray.

Parameters:

  • a (ArrayLike) – Variable \(a\) to convert.

  • dtype (Type[DTypeFloat] | None) – numpy.dtype to use for conversion, default to the numpy.dtype defined by the colour.constant.DTYPE_FLOAT_DEFAULT attribute.

Returns:

Variable \(a\) converted to numpy.floating.

Return type:

numpy.ndarray

Examples

>>> as_float(np.array(1))
1.0
>>> as_float(np.array([1]))
array([ 1.])
>>> as_float(np.arange(10))
array([ 0.,  1.,  2.,  3.,  4.,  5.,  6.,  7.,  8.,  9.])