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[python #OXJ-988166]: DAA file ingested from NOAAPort error in MetPy

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  • Subject: [python #OXJ-988166]: DAA file ingested from NOAAPort error in MetPy
  • Date: Mon, 26 Mar 2018 12:21:13 -0600
Randy,

That's really weird. MetPy should absolutely handle these files just fine, and 
indeed it works fine for me on my Mac.

What do you get if you run:

python --version
python -c 'import metpy; print(metpy.__version__)'

What operating system are you running?

Ryan

> As a followup to my emails from last week i have included two files here for 
> you. The
> first one, DAA_20180321_1203 is a file from our npxcd machine which was filed 
> using the
> ldm. My presumption after talking with you last week is that this is a NEXRAD 
> Level 3
> file. I am able to view it in mcidas as well as in IDV. However, when i use 
> Metpy to
> view it i get the following errors:
> 
> ./daa_test.py
> Traceback (most recent call last):
> File "./daa_test.py", line 15, in <module>
> f = Level3File(name)
> File 
> "/data/users/bdf/anaconda2/lib/python2.7/site-packages/metpy/io/nexrad.py", 
> line 1577, in __init__
> assert self._buffer.check_remains(self.header.msg_len - self.header_fmt.size)
> AssertionError
> 
> HOWEVER, we found some level 3 nexrad data online which is available with a 3 
> day delay
> and that is the 2nd file i have enclosed (KLWX_SDUS81_DAALWX_etc).
> 
> This file is successfully read by Metpy w/o any issues and i can display the 
> data etc.
> 
> So i am left to ask the question is the ldm decoding the data from noaaport 
> in a file
> format that Metpy can read?
> 
> Your emails below suggest that this should have worked.
> 
> thoughts?


Ticket Details
===================
Ticket ID: OXJ-988166
Department: Support Python
Priority: Normal
Status: Open
===================
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