Function to mask/remove high value gates at the edge of sweeps

[jjhelmus]

As suggested in nguy/artview#107 a method for removing the 'ring' of high value gates at the edge of sweeps would make a good addition to Py-ART. A simple implementation is as follows:

radar = pyart.io.read('some_file.nc')
# insure that the reflectivity field is a masked array
radar.fields['reflectivity']['data'] = np.ma.array(radar.fields['reflectivity']['data'])
# mask out the last gates in each sweep
radar.fields['reflectivity']['data'][:, -10:] = np.ma.masked

Such a feature would fit well in the pyart.correct namespace.

[scollis]

In addition it would be nice to write a procedure to detect this.. most
radars I have seen using a test signal use a constant dBm .. so writing
code that works out how many gates have within a certain stdev could be
easy to implement.. (i'll give this a go)

On 10/23/15 5:26 PM, Jonathan J. Helmus wrote:

As suggested in nguy/artview#107
nguy/artview#107 a method for removing the
'ring' of high value gates at the edge of sweeps would make a good
addition to Py-ART. A simple implementation is as follows:

radar= pyart.io.read('some_file.nc')

insure that the reflectivity field is a masked array

radar.fields['reflectivity']['data']= np.ma.array(radar.fields['reflectivity']['data'])

mask out the last gates in each sweep

radar.fields['reflectivity']['data'][:,-10:]= np.ma.masked

Such a feature would fit well in the |pyart.correct| namespace.

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