[ncl-talk] Error while plotting winds from WRF dataset

Mary Haley haley at ucar.edu
Mon Nov 20 15:44:56 MST 2017 

The ball was dropped on this question, because we thought somebody else was
handling it.

You have numerous errors in your script, which indicates to us that you are
not checking your error messages closely. Please make an effort to clean up
these errors before sending your scripts and data to us.

For example, this error is telling you exactly which line the error occurs
on, and what the issue is:

*fatal:["Execute.c":8567]:Execute: Error occurred at or near line 50 in
file wind_climatology_850hpa_all_files.ncl*
*fatal:Dimension size mismatch, dimension (0) of left hand side reference
does not have the same size as the right hand side reference after
subscripting.*


If you don't understand an error, then look at our "Common error messages"
page:

http://www.ncl.ucar.edu/Document/Language/error_messages.shtml

The above error is explained on this page. Here's the exact link:

http://www.ncl.ucar.edu/Document/Language/error_messages.shtml#DimsMismatch

<http://www.ncl.ucar.edu/Document/Language/error_messages.shtml#DimsMismatch>
However, I think the real issue may be that you are trying to use
wrf_user_intrp3d on non WRF files. You mentioned using ncrcat to create the
new files and I have a feeling these new files do not conform to the WRF
output file standards required by the wrf_xxx functions.

I don't understand why you needed to concatenate the files first. You
should be able to use "addfiles" to read in a series of WRF output files
directly. For example, let's say you have several WRF output files each
with one time step:

wrfout_d01_2008-09-28_00:30:00
wrfout_d01_2008-09-28_01:00:00
wrfout_d01_2008-09-28_01:30:00
wrfout_d01_2008-09-28_02:00:00
wrfout_d01_2008-09-28_02:30:00
wrfout_d01_2008-09-28_03:00:00
wrfout_d01_2008-09-28_03:30:00
wrfout_d01_2008-09-28_04:00:00
. . .

You can read these files in directoy with the following NCL script. Note
the use of addfiles:

  wrf_files = systemfunc("ls wrfout_d01_2008-09-29*")

  a = addfiles(wrf_files,"r")

  t2    = wrf_user_getvar(a,"T2",-1)     ; -1 means all time steps
                              u     = wrf_user_getvar(a,"ua",-1)
  v     = wrf_user_getvar(a,"va",-1)
  times = wrf_user_getvar(a,"times",-1)  ; get all times across all files

  print(times)
  printVarSummary(t2)
  printVarSummary(u)
  printVarSummary(v)


Remember that you cannot use wrf_xxxx functions on the DD_aug_2014.nc
files, unless they are WRF output files.

--Mary



On Mon, Nov 13, 2017 at 9:06 PM, swati shewale <shewaleswati16 at gmail.com>
wrote:

> Dear All,
>
> I wish to plot winds at 850 hpa but facing error as below. Tried it
> several ways like plotted separately by taking single file at a time, doing
> this it works fine. while doing panel plot, third file shows some weird
> error as mismatch array (If I handle third file separately, it does not
> show any error). I have uploaded 3 datafiles via NCL ftp, these are WRF
> files renamed as 13_aug_2014.nc, 14_aug_2014.nc <http://13_aug_2014.nc>,
> 15_aug_2014.nc <http://13_aug_2014.nc> (concanated using ncrcat). Please
> have a look at it and suggest me modification I need to carry out in the
> script.
>
> I have attached script. In the script, all the three files e.g. a0,a1,a2
> (I have repeated same files again as a3,a4,a5) have same structure except
> time.
>
>
> fatal:Dimension size mismatch, dimension (0) of left hand side reference
> does not have the same size as the right hand side reference after
> subscripting.
> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 245 in
> file $NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl
>
> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 50 in
> file wind_climatology_850hpa_all_files.ncl
>
> fatal:Dimension size mismatch, dimension (0) of left hand side reference
> does not have the same size as the right hand side reference after
> subscripting.
> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 245 in
> file $NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl
>
> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 51 in
> file wind_climatology_850hpa_all_files.ncl
>
> fatal:Undefined identifier: (uu2) is undefined, can't continue
> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 53 in
> file wind_climatology_850hpa_all_files.ncl
>
> fatal:Undefined identifier: (vv2) is undefined, can't continue
> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 54 in
> file wind_climatology_850hpa_all_files.ncl
>
> fatal:Variable (u_plane2) is undefined
> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 55 in
> file wind_climatology_850hpa_all_files.ncl
>
> fatal:Dimension size mismatch, dimension (0) of left hand side reference
> does not have the same size as the right hand side reference after
> subscripting.
> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 245 in
> file $NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl
>
> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 83 in
> file wind_climatology_850hpa_all_files.ncl
>
> fatal:Dimension size mismatch, dimension (0) of left hand side reference
> does not have the same size as the right hand side reference after
> subscripting.
> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 245 in
> file $NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl
>
> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 84 in
> file wind_climatology_850hpa_all_files.ncl
>
> fatal:Undefined identifier: (uu5) is undefined, can't continue
> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 86 in
> file wind_climatology_850hpa_all_files.ncl
>
> fatal:Undefined identifier: (vv5) is undefined, can't continue
> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 87 in
> file wind_climatology_850hpa_all_files.ncl
>
> fatal:Variable (u_plane5) is undefined
> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 88 in
> file wind_climatology_850hpa_all_files.ncl
>
> On Fri, Nov 10, 2017 at 10:54 AM, swati shewale <shewaleswati16 at gmail.com>
> wrote:
>
>> Dear All,
>>
>> Thank you Sir. It is working now.  Sorry for inconvenience.  from my side
>> am going through various scripts coming under vector form. Actually after
>> trying hard, If am unable to resolve the issue, then only approaches to NCL
>> user. Anyway, I have uploaded the files as well as script, if find it easy
>> to go through, Please suggest.
>>
>> On Fri, Nov 10, 2017 at 10:04 AM, Dennis Shea <shea at ucar.edu> wrote:
>>
>>> offline here
>>>
>>>
>>> I do not have any answer. I am not involved with systems or ftp.
>>>
>>> ---
>>>
>>> Possibly, after cd to the 'incoming' directory, the 'put' is trying to create a directory on the ftp site.
>>> Perhaps something named:
>>>
>>> /ftp/incoming/home/swati/work/analysis/2_cities/Patna/14aug2014/wrf_out_data/3rd_domain
>>>
>>> or ????
>>>
>>> /ftp/incoming/home/swati/work/analysis/2_cities/Patna/14aug2014/wrf_out_data/3rd_domain/try
>>>
>>>
>>> ========
>>>
>>> Maybe, you should cd to the directory with the data files
>>>
>>> %> cd /home/swati/work/analysis/2_cities/Patna/14aug2014/wrf_out_data/3rd_domain
>>>
>>> or
>>>
>>> %> cd /home/swati/work/analysis/2_cities/Patna/14aug2014/wrf_out_data/3rd_domain/try
>>>
>>>
>>> then, from that directory, try the ftp
>>>
>>> ftp ftp.cgd.ucar.edu
>>> anonymous*<enter your email address for the password>*
>>> cd incoming
>>> put 13_aug_2014.nc
>>>  . . .*continue with 'put' commands until all desired files are uploaded*. . .
>>> quit
>>>
>>>
>>> =======
>>>
>>> FYI: There may be major changes in ncl support. People are sending many complicated scripts
>>> which take considerable time on our part to understand. Sometimes *hours* ... even *days*.
>>>
>>> The NCL team wants to help but is not paid to answer NCL questions.
>>>
>>> In fact, some people just keep sending is poorly written scripts that we ust spend time
>>>
>>> cleaning up.
>>>
>>> It is frustrating.
>>>
>>> D
>>>
>>>
>>>
>>>
>>>
>>> On Thu, Nov 9, 2017 at 8:54 PM, swati shewale <shewaleswati16 at gmail.com>
>>> wrote:
>>>
>>>> Dear Dennis,
>>>>
>>>> All the three files, I want to sent has a size of 3.4 GB (total). As
>>>> per your suggestion, I tried to upload it still facing same issue.
>>>>
>>>> On Thu, Nov 9, 2017 at 8:39 PM, Dennis Shea <shea at ucar.edu> wrote:
>>>>
>>>>> How big is the file?
>>>>>
>>>>> The ftp area is only 24% full. Please try again.
>>>>>
>>>>> Sent from my iPhone
>>>>>
>>>>> On Nov 9, 2017, at 5:32 AM, swati shewale <shewaleswati16 at gmail.com>
>>>>> wrote:
>>>>>
>>>>> Dear All,
>>>>>
>>>>> Using below link, I followed the steps for uploading datafiles.
>>>>>
>>>>> https://www.ncl.ucar.edu/ftp_files.shtml
>>>>>
>>>>> It shows error as follow
>>>>>
>>>>> ftp> cd incoming
>>>>> 250 Directory successfully changed.
>>>>>
>>>>> ftp> put /home/swati/work/analysis/2_cities/Patna/14aug2014/wrf_out_d
>>>>> ata/3rd_domain/13_aug_2014.nc
>>>>> local: /home/swati/work/analysis/2_cities/Patna/14aug2014/wrf_out_d
>>>>> ata/3rd_domain/13_aug_2014.nc remote: /home/swati/work/analysis/2_ci
>>>>> ties/Patna/14aug2014/wrf_out_data/3rd_domain/13_aug_2014.nc
>>>>>
>>>>> 227 Entering Passive Mode (128,117,23,220,192,16).
>>>>> 553 Could not create file.
>>>>>
>>>>> Please let me know further steps to do. Thanks in advance.
>>>>>
>>>>>
>>>>>
>>>>> On Thu, Nov 9, 2017 at 5:25 PM, swati shewale <
>>>>> shewaleswati16 at gmail.com> wrote:
>>>>>
>>>>>> Dear All,
>>>>>>
>>>>>> I wish to plot winds at 850 hpa but facing error as below. Tried it
>>>>>> several ways like plotted separately by taking single file at a time, doing
>>>>>> this it works fine. while doing panel plot, third file shows some weird
>>>>>> error as mismatch array. I wish to send the dataset files, total 3 files
>>>>>> have size around 3.5 GB. Is it possible to send the dataset. Please give me
>>>>>> some insight. I have attached script.
>>>>>>
>>>>>> In the script, all the three files e.g. a0,a1,a2 (I have repeated
>>>>>> same files again as a3,a4,a5) have same structure except time. once I send
>>>>>> the data files (I used ncrcat command to concanate all the files),  you can
>>>>>> see no of files (using ncdump -h command) get concanated (at the bottom)
>>>>>>
>>>>>>
>>>>>> fatal:Dimension size mismatch, dimension (0) of left hand side
>>>>>> reference does not have the same size as the right hand side reference
>>>>>> after subscripting.
>>>>>> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 245
>>>>>> in file $NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl
>>>>>>
>>>>>> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 50
>>>>>> in file wind_climatology_850hpa_all_files.ncl
>>>>>>
>>>>>> fatal:Dimension size mismatch, dimension (0) of left hand side
>>>>>> reference does not have the same size as the right hand side reference
>>>>>> after subscripting.
>>>>>> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 245
>>>>>> in file $NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl
>>>>>>
>>>>>> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 51
>>>>>> in file wind_climatology_850hpa_all_files.ncl
>>>>>>
>>>>>> fatal:Undefined identifier: (uu2) is undefined, can't continue
>>>>>> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 53
>>>>>> in file wind_climatology_850hpa_all_files.ncl
>>>>>>
>>>>>> fatal:Undefined identifier: (vv2) is undefined, can't continue
>>>>>> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 54
>>>>>> in file wind_climatology_850hpa_all_files.ncl
>>>>>>
>>>>>> fatal:Variable (u_plane2) is undefined
>>>>>> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 55
>>>>>> in file wind_climatology_850hpa_all_files.ncl
>>>>>>
>>>>>> fatal:Dimension size mismatch, dimension (0) of left hand side
>>>>>> reference does not have the same size as the right hand side reference
>>>>>> after subscripting.
>>>>>> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 245
>>>>>> in file $NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl
>>>>>>
>>>>>> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 83
>>>>>> in file wind_climatology_850hpa_all_files.ncl
>>>>>>
>>>>>> fatal:Dimension size mismatch, dimension (0) of left hand side
>>>>>> reference does not have the same size as the right hand side reference
>>>>>> after subscripting.
>>>>>> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 245
>>>>>> in file $NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl
>>>>>>
>>>>>> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 84
>>>>>> in file wind_climatology_850hpa_all_files.ncl
>>>>>>
>>>>>> fatal:Undefined identifier: (uu5) is undefined, can't continue
>>>>>> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 86
>>>>>> in file wind_climatology_850hpa_all_files.ncl
>>>>>>
>>>>>> fatal:Undefined identifier: (vv5) is undefined, can't continue
>>>>>> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 87
>>>>>> in file wind_climatology_850hpa_all_files.ncl
>>>>>>
>>>>>> fatal:Variable (u_plane5) is undefined
>>>>>> fatal:["Execute.c":8567]:Execute: Error occurred at or near line 88
>>>>>> in file wind_climatology_850hpa_all_files.ncl
>>>>>>
>>>>>>
>>>>> _______________________________________________
>>>>> ncl-talk mailing list
>>>>> ncl-talk at ucar.edu
>>>>> List instructions, subscriber options, unsubscribe:
>>>>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>>>
>>>>>
>>>>
>>>
>>
>
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