[ncl-talk] How to combine many separate nc files together and convert them to monthly?

Wed Jun 29 12:44:59 MDT 2022

Hi Setareh,
You can remove the left subtitle by setting gsnLeftString = "".
Alternatively, you can leave that subtitle alone and move the main title up
by using tiMainString instead of gsnCenterString.
See: https://www.ncl.ucar.edu/Applications/title.shtml
Adam

On Tue, Jun 28, 2022 at 5:47 PM Setareh Rahimi via ncl-talk <
ncl-talk at mailman.ucar.edu> wrote:

> Dear Dennis,
> So many thanks for your help. I could finally run the script successfully.
> I attached the script and the plot. However, I would like to set the title
> of the plot as "NDVI average from 2021-03-03 to 2021-03-12"
> But this title overlaps with the main title of the file. How can I remove
> the original title, please?
> So many thanks for the time you allocate to check my request.
> Best wishes,
>
>
> On Wed, Jun 29, 2022 at 12:57 AM Dennis Shea <shea at ucar.edu> wrote:
>
>> The file you sent,
>>
>> VIIRS-Land_v001-preliminary_NPP13C1_S-NPP_20210312_c20220419124706.nc
>>
>> does not have a problem.
>>
>> As you requested, I ran *https://www.ncl.ucar.edu/Applications/Scripts/ndvi_3.ncl
>> <https://www.ncl.ucar.edu/Applications/Scripts/ndvi_3.ncl>*
>> on the file you sent*, I*t is appended.
>>
>> %> ncl  setareh_VIIRS.ncl
>>
>> As you requested, I ran the script  on the VIIRS file. It ran
>> successfully. The png is attached.
>> I think it would be best to send help requests to ncl-talk.
>> Maybe others can see issues that I am not seeing.
>>
>> Regards
>> Dennis
>>
>>
>>
>> On Tue, Jun 28, 2022 at 1:42 PM Setareh Rahimi <setareh.rahimi at gmail.com>
>> wrote:
>>
>>> Dear Dennis,
>>> I tried to plot NDVI for a specific day, hence 12 March 2021 using the
>>> file available at :
>>> https://www.ncl.ucar.edu/Applications/Scripts/ndvi_3.ncl
>>> However, I got an error again. It seems that there is a problem with the
>>> file. I attached the error message and the nc file. May I ask you please to
>>> run the script for this data?
>>> I need to make sure that the file is damaged.
>>> Thanks in advance,
>>>  VIIRS-Land_v001-preliminary_NPP13C1_S-NPP_20210...
>>> <https://drive.google.com/file/d/12H5UHVPVoQisuBgo62hs4-66_B7OVXS_/view?usp=drive_web>
>>>
>>> On Tue, Jun 28, 2022 at 11:35 PM Dennis Shea <shea at ucar.edu> wrote:
>>>
>>>> These messages do not even look like NCL error messages.
>>>>
>>>> If you entered the following at the command line and got those
>>>> messages, NCL in not involved.:
>>>>
>>>> %>  ls [1-2][8-9-0-1]*/*nc
>>>>
>>>> I'm not sure what to suggest.
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Tue, Jun 28, 2022 at 12:59 PM Setareh Rahimi <
>>>> setareh.rahimi at gmail.com> wrote:
>>>>
>>>>> Dear Dennis,
>>>>> Thanks again for your advice. I did as you suggested and again got an
>>>>> error. (attached)
>>>>> Why should I receive this message, please?
>>>>> ================================================
>>>>> ncattname: ncid 23986176: NetCDF: Variable not found
>>>>> ncattname: ncid 23986176: NetCDF: Variable not found
>>>>> ncattname: ncid 23986176: NetCDF: Variable not found
>>>>> ncattname: ncid 23986176: NetCDF: Variable not found
>>>>> ncattname: ncid 23986176: NetCDF: Variable not found
>>>>> file: NclNetCDF4.c, line: 2493
>>>>>
>>>>> We Thought It Was Compound Data, But NOT.
>>>>> ================================================
>>>>>
>>>>> On Tue, Jun 28, 2022 at 11:23 PM Dennis Shea <shea at ucar.edu> wrote:
>>>>>
>>>>>> NCL's *systemfunc* is invoking the Unix/Linux system 'ls'. It is
>>>>>> *independent* of NCL.
>>>>>>
>>>>>> From directory your NCL script is located, enter the following at the
>>>>>> command line:
>>>>>>
>>>>>> %>  ls [1-2][8-9-0-1]*/*nc
>>>>>>
>>>>>>
>>>>>> On Tue, Jun 28, 2022 at 11:46 AM Setareh Rahimi <
>>>>>> setareh.rahimi at gmail.com> wrote:
>>>>>>
>>>>>>> Dear Dennis,
>>>>>>> Many thanks for your email. I run the attached script and received
>>>>>>> the attached error.
>>>>>>> What is wrong, please?
>>>>>>>
>>>>>>> On Tue, Jun 28, 2022 at 10:07 PM Dennis Shea <shea at ucar.edu> wrote:
>>>>>>>
>>>>>>>> As indicated before, your path is wrong.
>>>>>>>> ====
>>>>>>>> The attached works just fine.
>>>>>>>>
>>>>>>>> %>  ncl NDVI_TimeSeries.ncl >&! NDVI.Daily_to_Monthly.txt
>>>>>>>>
>>>>>>>> On Tue, Jun 28, 2022 at 10:25 AM Setareh Rahimi via ncl-talk <
>>>>>>>> ncl-talk at mailman.ucar.edu> wrote:
>>>>>>>>
>>>>>>>>> Dear all,
>>>>>>>>>
>>>>>>>>> I have downloaded the Normalized Difference Vegetation Index
>>>>>>>>> (NDVI), from the Advanced Very High-Resolution Radiometer (AVHRR) sensor
>>>>>>>>> from the link below:
>>>>>>>>>
>>>>>>>>> https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ncdc:C01558/html
>>>>>>>>>
>>>>>>>>> As you can see this link provides daily data. And I have
>>>>>>>>> downloaded daily data from 1986 to 2021. I put the daily data for each year
>>>>>>>>> in a separate folder.
>>>>>>>>> Now I tend to calculate the monthly anomaly of NDVI and do not
>>>>>>>>> know how to combine all these files.
>>>>>>>>>
>>>>>>>>> I used the below commands to call the files:
>>>>>>>>> ========================================
>>>>>>>>> fils = systemfunc("ls [1-2][8-9-0-1]*/*nc")
>>>>>>>>>    print(fils)
>>>>>>>>>
>>>>>>>>>    f   = addfiles (fils, "r")
>>>>>>>>>
>>>>>>>>>    x   = short2flt(f[:]->NDVI)
>>>>>>>>>
>>>>>>>>>    printVarSummary(x)
>>>>>>>>> =========================================
>>>>>>>>> but got the attached error! Please have a look at the attached
>>>>>>>>> screenshot.
>>>>>>>>> How can I combine all those files together, please?
>>>>>>>>> I really appreciate any help you can provide.
>>>>>>>>> Best wishes,
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>> S.Rahimi
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> ncl-talk mailing list
>>>>>>>>> ncl-talk at mailman.ucar.edu
>>>>>>>>> List instructions, subscriber options, unsubscribe:
>>>>>>>>> https://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> S.Rahimi
>>>>>>>
>>>>>>>
>>>>>
>>>>> --
>>>>> S.Rahimi
>>>>>
>>>>>
>>>
>>> --
>>> S.Rahimi
>>>
>>>
>
> --
> S.Rahimi
>
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-- 
Adam Phillips
Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
www.cgd.ucar.edu/staff/asphilli/   303-497-1726

<http://www.cgd.ucar.edu/staff/asphilli>
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