cFit read support missing from superdarn.py

[alexchartier]

The cFit format (described here https://superdarn.github.io/rst/superdarn/src.doc/rfc/0007.html) is not supported by the current pydarnio. cFit is used quite widely as it contains most of the same stuff as fitACF but is typically 10x smaller.

[mts299]

Thank you for the feedback, I was not aware cFit is still used as FITACF is distributed more often and has a stronger support system. Due to the loss of the DSWG chair, there hasn't been much action on pyDARNio and knowing what the standard formats are.

However, you can try read_dmap() to see if it reads the file as long as it is in DMAP format.

[alexchartier]

Hi Marina, That didn't work:

>> import pydarn >> file = '/Users/chartat1/superdarn/data/cfit/2020/01/20200131.wal.cfit' >> pydarn.SuperDARNRead().read_dmap(file)

Error: /Users/chartat1/superdarn/data/cfit/2020/01/20200131.wal.cfit contains an block size 0 == 0 at record 0. Error: /Users/chartat1/superdarn/data/cfit/2020/01/20200131.wal.cfit contains an block size 0 == 0 at record 0. ..... Will try to read DMap file with read_dmap IF THIS FAILS please make an issue on pyDARNio, not pyDARN's issue <bound method DmapRead.read_records of SuperDARNRead(/Users/chartat1/superdarn/data/cfit/2020/01/20200131.wal.cfit, 8, 0, 3384079)> cFit is used quite widely I think, because it's so much smaller than fitACF. I've made what I think should be the format description for cFIT, but I'm not 100% sure how it goes into pydarn. Example cFit attached. Alex class cFit(): """ Class containing Fitacf fields """ # Standard fields types = { 'radar.revision.major': 'c', 'radar.revision.minor': 'c', 'origin.time_unix': 'd', 'origin.command': 's', 'stid': 'h', 'scan': 'h', 'cp': 'h', 'bmnum': 'h', 'bmazm': 'f', 'channel': 'h', 'intt.sc': 'h', 'intt.us': 'i', 'frang': 'h', 'rsep': 'h', 'rxrise': 'h', 'tfreq': 'h', 'noise': 'f', 'atten': 'h', 'nave': 'h', 'nrang': 'h', }

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________________________________ From: Marina Schmidt ***@***.***> Sent: Friday, March 19, 2021 11:35 AM To: SuperDARN/pyDARNio ***@***.***> Cc: alexchartier ***@***.***>; Author ***@***.***> Subject: Re: [SuperDARN/pyDARNio] cFit read support missing from superdarn.py (#19) Thank you for the feedback, I was not aware cFit is still used as FITACF is distributed more often and has a stronger support system. Due to the loss of the DSWG chair, there hasn't been much action on pyDARNio and knowing what the standard formats are. However, you can try read_dmap() to see if it reads the file as long as it is in DMAP format. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub<#19 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/ABCK6UA4DTVTIFQ5GHHUI53TENVKPANCNFSM4ZOL3CUA>.