And just a reminder that NCO can be easily installed using Conda:
conda install -c conda-forge nco
or if you don't have conda installed yet, just cut-and-paste these
lines to install conda and NCO:
url=https://repo.continuum.io/miniconda/Miniconda3-latest-Linux-x86_64.sh
curl $url -o miniconda.sh
bash miniconda.sh -b
export PATH=$HOME/miniconda3/bin:$PATH
conda install -c conda-forge nco
On Wed, Jun 22, 2016 at 10:01 AM, Lynnes, Christopher S. (GSFC-5860)
<christopher.s.lynnes@xxxxxxxx> wrote:
> Another alternative is to use the ncks command in a dap-enabled form of the
> NCO package, which will automatically pull over the coordinate variables:
>
> ncks -4 -d time,480,603 -d lat,20,34 -d lon,26,40 -v air
> http://www.esrl.noaa.gov/psd/thredds/dodsC/Datasets/ncep.reanalysis2/pressure/air.2014.nc
> out.nc
>
>> On Jun 22, 2016, at 9:41 AM, Antonio S. Cofiño <cofinoa@xxxxxxxxx> wrote:
>>
>> Ashwin,
>>
>> You must also have to specify time, latitude, longitude and level
>> coordinated variables associated to the tas variable itself
>>
>> nccopy -4
>> "http://www.esrl.noaa.gov/psd/thredds/dodsC/Datasets/ncep.reanalysis2/pressure/air.2014.nc?air[480:603][2][20:34][26:40],time[480:603],level[2],lat[20:34],lon[26:40]";
>> foo.nc
>>
>> regards
>>
>> Antonio
>>
>> P.S: The air variable is a Grid or ARRAY MAP in DAP terminology and it would
>> be possible to do what you want without specifying coordinated variables....
>> but the DAP service implemented by THREDDS is simpler in constraint
>> expression than others DAP service implementations (i.e. hyrax)
>>
>> El 22/06/2016 a las 15:20, ashwinD12 . escribió:
>>> Hello,
>>> I am using nccopy to download NCEP reanalysis files from a THREDDS
>>> server using constraint expressions.
>>>
>>> nccopy -4
>>> "http://www.esrl.noaa.gov/psd/thredds/dodsC/Datasets/ncep.reanalysis2/pressure/air.2014.nc?air[480:603][2][20:34][26:40]”;
>>> foo.nc
>>>
>>> However it does not do what I want it to do. When I check the contents of
>>> foo.nc it does not download the latitude, longitude, time and level
>>> information.
>>>
>>> The same file downloaded by FTP from ESRL PSD site contains the information
>>> of time, latitude , longitude and and level.
>>>
>>> Is there some other option I need to include in the nccopy command so that
>>> the other information is also downloaded ? Do I need to the include the
>>> "-v" option ?
>>>
>>>
>>> Following is my sample data from using nccopy -
>>>
>>> time[0] level[0] lat[0] lon[0] hgt[0]=5758 m
>>> time[0] level[0] lat[0] lon[1] hgt[1]=5715 m
>>> time[0] level[0] lat[0] lon[2] hgt[2]=5679 m
>>> time[0] level[0] lat[0] lon[3] hgt[3]=5658 m
>>> time[0] level[0] lat[0] lon[4] hgt[4]=5651 m
>>> time[0] level[0] lat[0] lon[5] hgt[5]=5656 m
>>> time[0] level[0] lat[0] lon[6] hgt[6]=5666 m
>>> time[0] level[0] lat[0] lon[7] hgt[7]=5675 m
>>> time[0] level[0] lat[0] lon[8] hgt[8]=5680 m
>>> time[0] level[0] lat[0] lon[9] hgt[9]=5680 m
>>> time[0] level[0] lat[0] lon[10] hgt[10]=5678
>>>
>>> The same data from FTP -
>>> time[0]=1879032 level[0]=500 lat[0]=40 lon[0]=65 hgt[0]=5758 m
>>> time[0]=1879032 level[0]=500 lat[0]=40 lon[1]=67.5 hgt[1]=5715 m
>>> time[0]=1879032 level[0]=500 lat[0]=40 lon[2]=70 hgt[2]=5679 m
>>> time[0]=1879032 level[0]=500 lat[0]=40 lon[3]=72.5 hgt[3]=5658 m
>>> time[0]=1879032 level[0]=500 lat[0]=40 lon[4]=75 hgt[4]=5651 m
>>> time[0]=1879032 level[0]=500 lat[0]=40 lon[5]=77.5 hgt[5]=5656 m
>>> time[0]=1879032 level[0]=500 lat[0]=40 lon[6]=80 hgt[6]=5666 m
>>> time[0]=1879032 level[0]=500 lat[0]=40 lon[7]=82.5 hgt[7]=5675 m
>>> time[0]=1879032 level[0]=500 lat[0]=40 lon[8]=85 hgt[8]=5680 m
>>>
>>>
>>> Regards,
>>> Ashwin.
>>>
>>>
>>>
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> --
> Christopher Lynnes NASA/GSFC 301-614-5185
> “We choose to go to the moon in this decade and do the other things, not
> because they are easy, but because they are hard..." - John F. Kennedy
>
>
>
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