[ncl-talk] Wrfoutput plots empty workstation

[Mary Haley]

Thanks for providing the data and script.

First, I was unable to even run your script because of this line:

  times = wrf_user_getvar(a,"Time",-1)  ; get all times in the file


There is no variable "Time" on the file.

I fixed this with:

  times  = wrf_user_list_times(a)
  ntimes = dimsizes(times)         ; number of times in the file
  printVarSummary(times)

Second, I was unable to read "slp" off the file, because apparently you
have some invalid data around time step index 94. I got an error:

Troubles finding level  100 above ground.
Problems first occur at (   1,   1)
Surface pressure =    0.0 hPa.
STOP Error_in_finding_100_hPa_up

In order to debug this, instead of trying to read "slp" for all time steps
at once, I moved the "slp" code to inside the do loop, so I could retrieve
slp for one timestep at a time.  This is the timestep where it failed:

     Working on time: 2000-04-12_21:00:00
     STOP Error_in_finding_100_hPa_up
     Troubles finding level  100 above ground.
     Problems first occur at (   1,   1)
     Surface pressure =    0.0 hPa.

This is something that wrfhelp at ucar.edu (cc'ed here) may be able to help
you with.  I've attached the modified version of your code, so you can at
least see that your script appears to be working for the earlier time steps.

--Mary



On Mon, Nov 2, 2015 at 10:06 AM, afwande juliet <afwandej965 at gmail.com>
wrote:

> Hi mary and all
> I have tried to work on it but don't know why;
>
> I have sent data and script via ftp
>
> On Thu, Oct 29, 2015 at 10:31 AM, Mary Haley <haley at ucar.edu> wrote:
>
>> Afwande,
>>
>> I forgot to mention that you don't want to *xxx*@gsnFrame and *xxx*@gsnDraw
>> to False.  This is not necessary in your case.
>>
>> If this still doesn't fix your problem, then in addition to the data
>> file, which I already requested, please email me a new copy of your script,
>> so I can try it here.
>>
>> --Mary
>>
>>
>> On Thu, Oct 29, 2015 at 9:55 AM, afwande juliet <afwandej965 at gmail.com>
>> wrote:
>>
>>> thanks
>>> Mary and Dennis,
>>> I have tried both suggestions from Dennis and Mary but it doesn't plot.
>>> The workstation is opened with no plot and error message. I have checked
>>> the data and realized it has only upto 18hours run but whatever the case
>>> there should be a plots
>>>
>>> thanks
>>>
>>> On Thu, Oct 29, 2015 at 7:54 AM, Mary Haley <haley at ucar.edu> wrote:
>>>
>>>> Afwande,
>>>>
>>>> My guess is that your script never got past this line, because NCL
>>>> doesn't know what type of file your wrf output file is:
>>>>
>>>>   a = addfile("./wrfout_d01_2000-04-01_06:00:00","r")
>>>>
>>>> Didn't your script give you an error when you tried to run it?
>>>>
>>>> You need to add a ".nc" to the end of the filename (note: is NOT
>>>> necessary to rename the file itself), so that NCL knows to open it as a
>>>> NetCDF file:
>>>>
>>>>   a = addfile("./wrfout_d01_2000-04-01_06:00:00.nc","r")
>>>>
>>>> --Mary
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> On Thu, Oct 29, 2015 at 5:27 AM, afwande juliet <afwandej965 at gmail.com>
>>>> wrote:
>>>>
>>>>> Dear NCL users,
>>>>>  I am trying to plot wrf output for temp, u and v wind  dewpoint temp
>>>>> in one plot but i only get empty workstation, could someone help me know
>>>>> why . I am using script from WRF-NCL page and the runs is for about 13days
>>>>> of 3hourly. I have attached the script
>>>>> thanks
>>>>> Afwande
>>>>>
>>>>> _______________________________________________
>>>>> ncl-talk mailing list
>>>>> ncl-talk at ucar.edu
>>>>> List instructions, subscriber options, unsubscribe:
>>>>> http://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>>>
>>>>>
>>>>
>>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20151102/57ac7d6f/attachment.html 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: many_mary_mods.ncl
Type: application/octet-stream
Size: 3030 bytes
Desc: not available
Url : http://mailman.ucar.edu/pipermail/ncl-talk/attachments/20151102/57ac7d6f/attachment.obj