[ncl-talk] CFSR from OpenDAP

[David Brown]

This has been fixed in the development branch of NCL.

On Thu, Apr 27, 2017 at 2:10 PM, Rick Brownrigg <brownrig at ucar.edu> wrote:

> My mistake..."http:" worked with 6.3.0, but "https:" did not.  Neither
> work with 6.4.0.
>
>
>
> On Thu, Apr 27, 2017 at 2:06 PM, David Brown <dbrown at ucar.edu> wrote:
>
>> There is definitely a bug. NCL is getting confused by the "grb2"
>> extension in the name, causing the path treated as a local file path rather
>> than as an OpenDAP file. This should be an easy fix.
>>  -dave
>>
>> On Thu, Apr 27, 2017 at 1:59 PM, Rick Brownrigg <brownrig at ucar.edu>
>> wrote:
>>
>>> Hi Carl,
>>>
>>> Try "http:" rather than "https:" -- it worked for me.  In the case of
>>> "https:", an strace of NCL revealed it was looking only in the local file
>>> system for the file, and there was no network activity.  I don't know if
>>> that is a bug or intentional behavior.
>>>
>>> Rick
>>>
>>>
>>> On Thu, Apr 27, 2017 at 1:47 PM, Kyle Griffin <ksgriffin2 at wisc.edu>
>>> wrote:
>>>
>>>> Hi Carl,
>>>>
>>>> I can confirm that I can open the file via netCDF4 in python (1.2.7),
>>>> but cannot in my installs of NCL (6.3.0). There was a version of netCDF4
>>>> that had issues with OPeNDAP a few months ago (1.2.1 ish, perhaps?), but
>>>> that doesn't explain why the much older NCL 6.3.0 would also fail to open
>>>> the file.
>>>>
>>>>
>>>> Kyle
>>>>
>>>> On Thu, Apr 27, 2017 at 12:38 PM Carl Schreck <cjschrec at ncsu.edu>
>>>> wrote:
>>>>
>>>>> I am trying to access CFS Reforecasts from any of the files underneath
>>>>> here
>>>>> <https://nomads.ncdc.noaa.gov/thredds/catalog/cfsr-hpr-ts45/catalog.html>,
>>>>> such as this one for OLR
>>>>> <https://nomads.ncdc.noaa.gov/thredds/catalog/cfsr-hpr-ts45/uswtoa_f/2010/201012/catalog.html?dataset=cfsr-hpr-ts45/uswtoa_f/2010/201012/uswtoa_f.01.2010123118.2011021418.2010123118.grb2>
>>>>> .
>>>>>
>>>>> But NCL does not seem to be able to access the OpenDAP links:
>>>>> ncl 0> f=addfile("https://nomads.ncdc.noaa.gov/thredds/dodsC/cfsr-h
>>>>> pr-ts45/uswtoa_f/2010/201012/uswtoa_f.01.2010123118.20110214
>>>>> 18.2010123118.grb2","r")
>>>>> fatal:_NclFileCreate: Requested file does not exist as (
>>>>> https://nomads.ncdc.noaa.gov/thredds/dodsC/cfsr-hpr-ts45/us
>>>>> wtoa_f/2010/201012/uswtoa_f.01.2010123118.2011021418.2010123118.grb2)
>>>>> or as (https://nomads.ncdc.noaa.gov/thredds/dodsC/cfsr-hpr-ts45/us
>>>>> wtoa_f/2010/201012/uswtoa_f.01.2010123118.2011021418.2010123118),
>>>>> can't add file
>>>>>
>>>>> I'm trying to figure out if it's an issue with NCL or with their
>>>>> server. It also failed on 6.3.0.
>>>>>
>>>>> Let me know if you have any thoughts. Thanks!
>>>>> Carl
>>>>>
>>>>>
>>>>> --
>>>>>
>>>>>
>>>>> <https://ncics.org/>
>>>>> * Cyclone <http://www.cyclonecenter.org/>*Center.org
>>>>> <http://www.cyclonecenter.org/>   *Carl J. Schreck III, PhD*
>>>>> *Research Scholar / Research **Assistant Professor*
>>>>> Cooperative Institute for Climate and Satellites NC (CICS
>>>>> <http://www.cicsnc.org/>*-NC) <http://www.cicsnc.org/> /*
>>>>> Department of Marine, Earth, and Atmospheric Sciences (MEAS)
>>>>> <https://meas.sciences.ncsu.edu/>
>>>>> North Carolina State University <http://ncsu.edu/>
>>>>> NOAA National Centers for Environmental Information (NCEI)
>>>>> <http://ncei.noaa.gov/>
>>>>> 151 Patton Ave, Asheville, NC 28801
>>>>> e: carl_schreck at ncsu.edu
>>>>> o: +1 828 257 3140 <(828)%20257-3140>
>>>>> c: +1 828 484 1702 <(828)%20484-1702>
>>>>> Publications
>>>>> <http://scholar.google.com/citations?hl=en&user=th8ONEcAAAAJ&view_op=list_works&sortby=pubdate>
>>>>> ncics.org/mjo
>>>>> _______________________________________________
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>>>>>
>>>> --
>>>> ----------------------------------------
>>>> Kyle S. Griffin
>>>> Department of Atmospheric and Oceanic Sciences
>>>> University of Wisconsin - Madison
>>>> Room 1407
>>>> 1225 W Dayton St, Madison, WI 53706
>>>> Email: ksgriffin2 at wisc.edu
>>>>
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>>>
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>>
>
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