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openradar / xradar

A tool to work in weather radar data in xarray
https://docs.openradarscience.org/projects/xradar
MIT License
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missing get_azimuth method in obj created from xradar #170

Closed seoc16 closed 2 months ago

seoc16 commented 3 months ago

Description

Describe what you were trying to get done. Tell us what happened, what went wrong, and what you expected to happen. i am loading data through xradar using 

radar = pyart.xradar.Xradar(tree1,  default_sweep='sweep_0')

I am able to use the gridding function in pyart, but then i am trying to use the find objects method and i get the following error

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
Cell In[123], line 2
      1 #attempt at tracking obj
----> 2 objDisplay = pyart.correct.find_objects(radar, "DBZH", 15,sweeps=0)

File ~/miniconda3/envs/radar/lib/python3.12/site-packages/arm_pyart-1.18.0.post5-py3.12-linux-x86_64.egg/pyart/correct/despeckle.py:70, in find_objects(radar, field, threshold, sweeps, smooth, gatefilter, delta)
     68 for iswp in sweeps:
     69     data = _get_data(radar, iswp, field, tlo, thi, smooth, gatefilter=gatefilter)
---> 70     az = radar.get_azimuth(iswp, copy=False)
     71     if _check_for_360(az, delta):
     72         # If 360 or close, account for the periodic boundary
     73         labels, nobj = _adjust_for_periodic_boundary(data)

AttributeError: 'Xradar' object has no attribute 'get_azimuth'

are there missing methods in the radar object?

What I Did

objDisplay = pyart.correct.find_objects(radar, "DBZH", 15,sweeps=0)
zssherman commented 3 months ago

@seoc16 I believe the despeckling algo in Py-ART is not yet able to use an xradar object. The call get_azimuth being used in the find_objects code above is found in a Py-ART radar class object. @mgrover1 Can correct me if I'm wrong, or if there is a status on that capability.

mgrover1 commented 3 months ago

Thanks for raising this issue - this is a bug within the Py-ART/xradar bridge currently.

mgrover1 commented 3 months ago

@seoc16 - please see https://github.com/ARM-DOE/pyart/issues/1535 for more discussion about resolving this issue 👍

kmuehlbauer commented 2 months ago

Should be resolved by updating pyart to latest version.