[ncl-talk] NCL Query

Wed Sep 10 10:50:24 MDT 2014

Thanks Kyle . You have solved my problem.

cheers

Kunal Bali
Research Scholar
Radio & Atmospheric Science Division
CSIR - National Physical Laboratory
New Delhi - 110012

On Wed, Sep 10, 2014 at 8:23 PM, Kyle Griffin <ksgriffin2 at wisc.edu> wrote:

> Please remember to use reply-all so everyone on the list can see your
> comments.
>
> I sent you a link for example 8, which contains some information about
> setting tick marks. Please read this. Also, a simple search for tick marks
> turns up this page: http://ncl.ucar.edu/Applications/tickmarks.shtml -
> everything you need to know about setting the major ticks, minor ticks, and
> the labels for each is here. Good luck!
>
>
> Kyle
>
> ----------------------------------------
> Kyle S. Griffin
> Department of Atmospheric and Oceanic Sciences
> University of Wisconsin - Madison
> Room 1421
> 1225 W Dayton St, Madison, WI 53706
> Email: ksgriffin2 at wisc.edu
>
> On Wed, Sep 10, 2014 at 9:36 AM, Kunal Bali <kunal.bali9 at gmail.com> wrote:
>
>> Dear Kyle
>>
>> Thank You so much for replying. Yes, its my mistake that i was mentioning
>> 0 hpa actually i wanted to pointed out 10 hpa pressure level.
>>
>> And what i wanted to say is that as you see in the figure we can see
>> directly where is 200 hpa level or 600 hpa level but after 200 hpa level (
>> as you said lot of data above 200 hpa, you are right ) but I can not see
>> where exactly 50 hpa levelt is ??  Are you getting my point. I want to
>> point out each and every pressure levels in the data so that i can see
>> where is 50 hpa and where is 20 hpa level in the figure.
>>
>> Hope you will understand my query
>>
>>
>>
>> Kunal Bali
>> Research Scholar
>> Radio & Atmospheric Science Division
>> CSIR - National Physical Laboratory
>> New Delhi - 110012
>>
>>
>>
>>
>>
>>
>> On Wed, Sep 10, 2014 at 7:43 PM, Kyle Griffin <ksgriffin2 at wisc.edu>
>> wrote:
>>
>>> Kunal,
>>>
>>> PLEASE look at your graph and understand what it is saying. First, your
>>> plot goes far above 200 hPa. There is a LOT of data above 200 hPa. This
>>> appears to be plotting all available data you have, which appears to be up
>>> to or at least near 0 hPa based on the tick marks (perhaps it is up to 10
>>> hPa?). Also, there is no such level as 0 hPa in the atmosphere, so be
>>> careful using this for anything meaningful.
>>>
>>> This ENTIRE PAGE of examples (see link below) shows you how to make the
>>> plot you are working on. It may have been sent to you in your previous
>>> posts - if not, it is very easily searchable if you type "pressure latitude
>>> plot" in the wonderful search box on the website. It is important to look
>>> at ALL of the examples, as most of the common functionality with these
>>> plots are presented in some combination of the examples.
>>>
>>> http://ncl.ucar.edu/Applications/height_lat.shtml
>>>
>>> In this case, please refer to example 8. However, I don't think this
>>> will help you unless your data actually extend to 0 hPa (which I think is
>>> unlikely), as you can't plot data that you don't have. It might be a good
>>> idea to use printVarSummary to figure out the name of your vertical
>>> coordinate variable and then print(name_of_that_variable) so you can see
>>> how far it extends. I also think you might run into problems trying to have
>>> a logarithmic plot include a zero value, which would need to be infinitely
>>> far away from all other numbers. So, overall, be careful and you might need
>>> to accept that this is potentially all the data you can plot.
>>>
>>>
>>> Kyle
>>>
>>> ----------------------------------------
>>> Kyle S. Griffin
>>> Department of Atmospheric and Oceanic Sciences
>>> University of Wisconsin - Madison
>>> Room 1421
>>> 1225 W Dayton St, Madison, WI 53706
>>> Email: ksgriffin2 at wisc.edu
>>>
>>> On Wed, Sep 10, 2014 at 7:24 AM, Kunal Bali <kunal.bali9 at gmail.com>
>>> wrote:
>>>
>>>> Dear NCL
>>>>
>>>> I have plotted the pressure vs latitude graph.
>>>> But in that pressure levels values is not coming from 0 to 1000. its
>>>> coming from 200 to 1000 hpa. I need to display pressure levels from 0 to
>>>> 1000.
>>>>
>>>> So how to correct the script. I used the script for this plot given
>>>> below
>>>>
>>>> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
>>>> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
>>>> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
>>>>
>>>> begin
>>>>  in  = addfile("14-01.nc","r")
>>>>   ts  = in->CH4_VMR_A
>>>> zave = dim_avg_Wrap(ts)
>>>>  wks  = gsn_open_wks("pdf","zonal")
>>>>   gsn_define_colormap(wks,"BlAqGrYeOrRe")
>>>>   res            = True
>>>>   res at cnFillOn = True
>>>>   res at mpFillOn = True
>>>>   res at mpFillColors = (/ -1,-1,103,-1/)
>>>> ;  res at mpMinLatF = -70.
>>>> ;  res at mpMaxLatF = 70.
>>>>
>>>>   res at tiMainString = " Is it OK "
>>>>
>>>>   res at trYReverse = True                            ; reverse Y axis
>>>>   res at trXReverse = True                            ; reverse X axis
>>>>
>>>>   plot=gsn_csm_contour(wks,zave(:,:),res)
>>>> ;***********************************************
>>>> end
>>>>
>>>>
>>>> Kunal Bali
>>>> Research Scholar
>>>> Radio & Atmospheric Science Division
>>>> CSIR - National Physical Laboratory
>>>> New Delhi - 110012
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
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>>>>
>>>>
>>>
>>
>
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