pysteps.utils.transformation.dB_transform¶

pysteps.utils.transformation.dB_transform(R, metadata=None, threshold=None, zerovalue=None, inverse=False)¶

Methods to transform precipitation intensities to/from dB units.

Parameters

R: array-like: Array of any shape to be (back-)transformed.
metadata: dict, optional: Metadata dictionary containing the transform, zerovalue and threshold attributes as described in the documentation of pysteps.io.importers.
threshold: float, optional: Optional value that is used for thresholding with the same units as R. If None, the threshold contained in metadata is used. If no threshold is found in the metadata, a value of 0.1 is used as default.
zerovalue: float, optional: The value to be assigned to no rain pixels as defined by the threshold. It is equal to the threshold - 1 by default.
inverse: bool, optional: If set to True, it performs the inverse transform. False by default.

Returns