[ncl-talk] Unable to generate plot from Lambert_conformal grid data

Sat Nov 19 13:38:33 MST 2022

Thanks Adam for all your help.
Debasish

On Tue, Nov 15, 2022 at 1:56 PM Adam Phillips <asphilli at ucar.edu> wrote:

> Hi Debasish,
> I have downloaded your simple3.nc file, and modified and ran your
> Test_lambert2.ncl file.  I believe you were plotting the data correctly,
> and I am attaching my script and resulting plot. In short, I believe your
> data spans a very narrow range from 99.9999->100.0001. When I ran your
> simple3.nc array dust array through a simple statistical function of mine
> (that is similar to stat_dispersion
> <https://www.ncl.ucar.edu/Document/Functions/Contributed/stat_dispersion.shtml>),
> here's what it shows:
>
> Type: double
> Total Size: 15241128 bytes
>             1905141 values
> Number of Dimensions: 2
> Dimensions and sizes: [grid_yt | 1059] x [grid_xt | 1799]
> Coordinates:
>             grid_yt: [   0..3174000]
>             grid_xt: [   0..5394000]
> Number Of Attributes: 8
>   _FillValue : -10000000000
>   pfull : 3.176593
>   time : 0.01666666666666667
>   cell_methods : time: point
>   long_name : dust mixing ratio
>   output_file : dyn
>   units : ug/kg
>   missing_value : -10000000000
> (0) Min of array = 99.99990879805409, max = 100.0001006445927, mean =
> 100.0000030975023, std dev = 9.552738461320711e-06
> (0) 1 std dev range =99.99999354476387:100.0000126502408 (68%)
> (0) 2 std dev range =99.99998399202541:100.0000222029793 (95%)
> (0) 3 std dev range =99.99997443928694:100.0000317557177 (99%)
> (0) No missing data is present in this array
>
> Hope this helps!
> Adam
>
> On Fri, Nov 11, 2022 at 6:04 PM Debasish Hazra <debasish.hazra5 at gmail.com>
> wrote:
>
>> Hi Adam,
>> Thanks. I have put first 8 variables as you suggested and put them in
>> google drive (as putting in ftp failed again) :
>>
>> https://drive.google.com/drive/folders/1FCFWNVf95sLpjhBYfMt7zZyqz_hiNZ2i?usp=sharing
>>
>> and shared it among ncl-talk group. I have worked on the ncl script and
>> attached the current code and figure.
>> Any help on this is appreciated.
>> Debasish
>>
>>
>> On Fri, Nov 11, 2022 at 2:38 PM Adam Phillips <asphilli at ucar.edu> wrote:
>>
>>> Hi Debasish,
>>> As a reminder, please do not write to any ncl-talk contributor directly
>>> unless asked to do so. This way the community can see the complete
>>> discussion.
>>> The ftp site seemingly works for some people but fails for others, and
>>> there unfortunately is nothing that can be done about it. The best way
>>> forward is for ncl-talk participants to reduce the size of their data file
>>> to a size less than 15MB, and to email the file to ncl-talk, as you have
>>> done here.
>>>
>>> With regards to the file you sent (simple2.nc): The file does not
>>> include variables that are needed to correctly plot the data. For example,
>>> the lat and lon arrays were not included. Please include the first 8
>>> variables shown in your ncdump output shown in your original message.
>>>
>>> Finally, you say the plot did not work, but ncl-talk needs more
>>> information to be able to help. What did not work? Was a plot created? If
>>> so, was the data displayed incorrectly? Were there any error messages
>>> returned to the terminal? If so, what were they?
>>>
>>> Unfortunately, less folks are participating in ncl-talk discussions, and
>>> there are no longer any NCAR staff that are paid to respond. The more
>>> information users provide in initial ncl-talk queries, the cleaner/easier
>>> the included script is to inspect, the better the odds are that the query
>>> will be answered.
>>> Adam
>>>
>>>
>>>
>>> On Wed, Nov 9, 2022 at 11:11 AM Debasish Hazra <
>>> debasish.hazra5 at gmail.com> wrote:
>>>
>>>> I am not able to put the full data file on ucar ftp. But extracted the
>>>> variable in 2D and attached in the email.
>>>> Thanks
>>>> Debasish
>>>>
>>>> On Wed, Nov 9, 2022 at 10:55 AM Debasish Hazra <
>>>> debasish.hazra5 at gmail.com> wrote:
>>>>
>>>>> Thanks Adam, unfortunately It did not work. I have attached a tried
>>>>> script . I ma trying to put data in ftp, using this link
>>>>> https://www.ncl.ucar.edu/ftp_files.shtml .But is not working.
>>>>> Any help is appreciated.
>>>>> Thanks,
>>>>> Debasish.
>>>>>
>>>>> On Mon, Nov 7, 2022 at 4:28 PM Adam Phillips <asphilli at ucar.edu>
>>>>> wrote:
>>>>>
>>>>>> Hi Debasish,
>>>>>> I do not have any experience working with lambert_conformal gridded
>>>>>> data, but looking at your ncdump output there are variables named lat and
>>>>>> lon that are 2D variables that I think you can use to plot the data
>>>>>> directly using the lat2d/lon2d assignment method.
>>>>>> I would try this:
>>>>>>
>>>>>> dustsfc = flt2dble(a1->dust)
>>>>>> lev = a1->pfull
>>>>>> dustsfc2 at lat2d = a1->lat
>>>>>> dustsfc2 at lon2d = a1->lon
>>>>>> labes = (/"Dust conc(ug/kg) at surface : 00FH"/)
>>>>>>
>>>>>>  wks_type = "png"
>>>>>> ..... (continue using the rest of your script)
>>>>>>
>>>>>> If that does not work I would recommend creating a new netCDF file
>>>>>> that only contains a single 3D variable, along with the first 8 variables
>>>>>> shown in your ncdump output (pfull->lat), and send that new file to the
>>>>>> ncl-talk email list. Include your most recent script and any error messages
>>>>>> that you are getting as well.
>>>>>> Good luck,
>>>>>> Adam
>>>>>>
>>>>>> On Mon, Nov 7, 2022 at 12:35 PM Debasish Hazra via ncl-talk <
>>>>>> ncl-talk at mailman.ucar.edu> wrote:
>>>>>>
>>>>>>> Hi,
>>>>>>> I am trying to plot variable which is in lambert_conformal grid, but
>>>>>>> I am not able to generate the plot. Attached is ncl_filedump and ncl
>>>>>>> script.Can anyone point out how to do it. Thanks
>>>>>>>
>>>>>>> Debasish.
>>>>>>> _______________________________________________
>>>>>>> ncl-talk mailing list
>>>>>>> ncl-talk at mailman.ucar.edu
>>>>>>> List instructions, subscriber options, unsubscribe:
>>>>>>> https://mailman.ucar.edu/mailman/listinfo/ncl-talk
>>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Adam Phillips
>>>>>> Associate Scientist IV, Climate Analysis Section
>>>>>> Climate and Global Dynamics Laboratory
>>>>>> National Center for Atmospheric Research
>>>>>> www.cgd.ucar.edu/staff/asphilli/
>>>>>>
>>>>>> <http://www.cgd.ucar.edu/staff/asphilli>
>>>>>>
>>>>>
>>>
>>> --
>>> Adam Phillips
>>> Associate Scientist IV, Climate Analysis Section
>>> Climate and Global Dynamics Laboratory
>>> National Center for Atmospheric Research
>>> www.cgd.ucar.edu/staff/asphilli/
>>>
>>> <http://www.cgd.ucar.edu/staff/asphilli>
>>>
>>
>
> --
> Adam Phillips
> Associate Scientist IV, Climate Analysis Section
> Climate and Global Dynamics Laboratory
> National Center for Atmospheric Research
> www.cgd.ucar.edu/staff/asphilli/
>
> <http://www.cgd.ucar.edu/staff/asphilli>
>
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