Re: OPeNDAP

Mingxuan,

Do you install NCL from source code, or download binary?
If download binary, could you please let us know the binary you downloaded?

Thanks,

Wei

huangwei@ucar.edu
VETS/CISL
National Center for Atmospheric Research
P.O. Box 3000 (1850 Table Mesa Dr.)
Boulder, CO 80307-3000 USA
(303) 497-8924

On Sep 19, 2012, at 10:40 AM, Mingxuan Chen wrote:

> Wei,
> Please see the following:
> --------------------------------------------
> ncopen: filename "http://nomads.ncep.noaa.gov:9090/dods/gfs_hd/gfs_hd20120907/gfs_hd_00z": NetCDF: Unknown file format
> (0) File: <http://nomads.ncep.noaa.gov:9090/dods/gfs_hd/gfs_hd20120907/gfs_hd_00z>, existence: False
> fatal:NetCDF: Unknown file format
> fatal:Could not open (http://nomads.ncep.noaa.gov:9090/dods/gfs_hd/gfs_hd20120907/gfs_hd_00z)
>
> Variable: f
> Type: file
> (0) File Missing Value : -1
> ------------------------------------
> Thanks
> Mingxaun
>
> On Sep 19, 2012, at 10:32 AM, Wei Huang <huangwei@ucar.edu> wrote:
>
>> Mingxuan,
>>
>> That server could have some problem.
>>
>> Can you try script:
>>
>> flnm = "http://nomads.ncep.noaa.gov:9090/dods/gfs_hd/gfs_hd20120907/gfs_hd_00z"
>> exists = isfilepresent(flnm)
>> print("File: <" + flnm + ">, existence: " + exists)
>>
>> f = addfile(flnm, "r")
>> print(f)
>>
>> and let us know if there is any problem?
>>
>> Thanks,
>>
>> Wei
>>
>> huangwei@ucar.edu
>> VETS/CISL
>> National Center for Atmospheric Research
>> P.O. Box 3000 (1850 Table Mesa Dr.)
>> Boulder, CO 80307-3000 USA
>> (303) 497-8924
>>
>>
>>
>>
>>
>>
>> On Sep 19, 2012, at 10:07 AM, Mingxuan Chen wrote:
>>
>>> Hello,
>>> My machine is in Mac OS X 10 8.1, ncl version is 6.1.0-beta and I want to access OPENDAP data.
>>> I tried opendap.ncl
>>> --------------------------------------
>>> ncopen: filename "http://test.opendap.org/data/nc/123.nc": NetCDF: Unknown file format
>>> (0) OPeNDAP isfilepresent test unsuccessful.
>>> (0) Either file doesn't exist, or NCL does not have OPeNDAP capabilities on this system
>>> ---------------------
>>> What is wrong?
>>>
>>> Thank you for your help!
>>>
>>>
>>> Mingxuan
>>>
>>> ------opendap.ncl-----------------
>>> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
>>> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
>>> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
>>> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/shea_util.ncl"
>>> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/diagnostics_cam.ncl"
>>>
>>> begin
>>> url= "http://test.opendap.org/data/nc/"
>>> filename = url + "123.nc"
>>> print(filename)
>>> exists = isfilepresent(filename)
>>> if(.not.exists) then
>>> print("OPeNDAP isfilepresent test unsuccessful.")
>>> print("Either file doesn't exist, or NCL does not have OPeNDAP capabilities on this system")
>>> else
>>> print("OPeNDAP isfilepresent test successful.")
>>> f = addfile(filename,"r")
>>> vars = getfilevarnames(f)
>>> print(vars) ; should be (in any order): "l","j","i","cross","aloan",
>>> ; "shot","order","bears"
>>> end if
>>> end
>>> -----------------
>>>
>>> _______________________________________________
>>> ncl-talk mailing list
>>> List instructions, subscriber options, unsubscribe:
>>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>
>

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Received on Wed Sep 19 10:53:42 2012