FIX: adding dr to argument list of kdp_from_phidp.

wradlib/wradlib mit default zusammengeführt

ENH: Added fourth experimental Kdp retrieval based on convolution filter suggested by Kai Mühlbauer.

The function is named kdp_from_phidp4. It also takes care of remaining NaN values.
If phidp does not contain NaNs, only the convolution filter is applied.

wradlib/wradlib mit default zusammengeführt

FIX: Fixing bug in handling the end of the beam in kdp_from_phidp2.

Also inserted the explicit handling of start and end of the beam to kdp_from_phidp3.

FIX: Accounting for forward/backward propagation effects in kdp_from_phidp2 and kdp_from_phidp3.

wradlib/wradlib mit default zusammengeführt

ENH: New experimental Kdp retrieval function kdp_from_phidp3.

This function should be robust AND fast. For contiguous valid regions, it
applies a sobel filter, for remaining NaN regions with valid neighbours it
performs a local linear regression.

Beyond, all the kdp_from_phidp functions now have an argument dr which specifies the...

MIN: kdp_from_phidp2 now explicitely handles the start and the end of each beam.

For the start and the end of the beam, we do not use a "central window" around a
gate, but we use a forward window for the first L/2 gates and a backward window
for the last L/2 gates.

wradlib/wradlib mit default zusammengeführt

ENH: Adding new experimental function for Kdp retrieval (kdp_from_phidp2).

This function uses a moving window linear regression and should also work for data
with gaps. STATUS is experimental.

FIX: Adapting VPR functions to new z-y-x order of 3-D arrays

Added correctAttenuationConstrained2 as an attenuation correction very close to Kraemer algorithm.

Added correctAttenuationConstrained2 as an attenuation correction very close to Kraemer algorithm.

ENH: Added percent bias (pbias) as verificaiton measure to ErrorMetrics.

MIN: Provides the option to pass parameters accepted by the functions to process_raw_phidp.

This change was necessary so the user is not forced to use the default parameters
of all the functions that are used in the convenience funciton process_raw_phidp.

MIN: Changing the default value of the margin argument of fill_phidp to 3.

MIN: Added the requirement to MFB that there should be at least "mingage" number of valid raw and obs pairs.

Also added a try/except statement to the linear regression in case line fitting fails.

DOC: Exposing the class adjust.GageOnly in the documentation.

ENH: Making Mean Field Bias Adjustment (MFB) more robust by using linear regression.

If biasby argument to MFB.__call__ was "mean", the bias was computed by simply
computing the mean of the ratios between obs and est. Now a new argument value is
introduced which is "linregr" (now the default value). In that case, the bias is...