[ncl-talk] plotting_issue

[Barry Lynn]

Hello:

You can convert this data to a grid with lat/lon data by assigning lat/lon
attributes to your data.  Alternatively, you could interpolate your data to
a lat/lon grid of your choice.

I can't access my programs now, so I can't send you an example.

However, if your grid is curvelinear, you can use:

https://www.ncl.ucar.edu/Document/Functions/Built-in/rcm2rgrid.shtml

There is also

https://www.ncl.ucar.edu/Document/Functions/Built-in/area_hi2lores.shtml

On Thu, Jun 20, 2019 at 2:42 PM Kunal Bali via ncl-talk <ncl-talk at ucar.edu>
wrote:

> thanks for this information. but can we change cartesian grid to latlon
> grid.
>
>
>
> ---
> Kunal
>
>
>
>
>
>
> On Wed, Jun 19, 2019 at 2:49 AM Dennis Shea <shea at ucar.edu> wrote:
>
>> Please look at your data.
>>
>> The data are on a cartesian grid.
>> There are no latitude/longitude values.  Hence:
>>
>> (a) the *mp** resources are not applicable.
>> (b) the *gsn_csm_contour_map* function is not applicable. It looks for
>> latitude/longitude values.
>>
>> ===========
>> *;;*res at trGridType        = "TriangularMesh"  ; plotting is too slow
>> without this
>> *;;*res at gsnAddCyclic      = False                 ; applicable for
>> georeferenced data only
>>
>> *;;*res at mpMinLonF = 68.0
>> *;;*res at mpMaxLonF = 97.5
>> *;;*res at mpMinLatF = 5.0
>> *;;*res at mpMaxLatF = 38.0
>>
>>   res at pmTickMarkDisplayMode  = "Always"
>> *;;*res at mpGridSpacingF         =  2
>> *;;*res at mpGridLineThicknessF   = 4.0
>>   res at tmXBLabelFontHeightF  = 0.02
>>   res at tmYLLabelFontHeightF  = 0.02
>>   res at tmXBLabelFontQuality  = "High"
>>   res at tmBorderThicknessF    = 6
>>
>> ;---Fix the contour levels for all plots
>>   res at cnLevelSelectionMode = "ManualLevels"
>>   res at cnMinLevelValF  = 0                   ; -0.1
>>   res at cnMaxLevelValF  = 1
>>   res at cnLevelSpacingF = 0.1
>>   res at cnFillPalette              = "WhBlGrYeRe"
>>
>> *;;*plot = gsn_csm_contour_map(wks,var1,res)
>>   plot = *gsn_csm_contour*(wks,var1,res)
>>
>> On Tue, Jun 18, 2019 at 12:14 PM Soma Roy <somaroy892 at gmail.com> wrote:
>>
>>> Send your input file.. I will inform you.
>>>
>>> Thanks,
>>> Soma
>>>
>>> On Tue, Jun 18, 2019, 23:37 Kunal Bali <kunal.bali9 at gmail.com> wrote:
>>>
>>>> Dear NCL users,
>>>>
>>>> not able to plot,
>>>> not receiving any error,
>>>> script is attached
>>>>
>>>>
>>>> *file summary:*
>>>>
>>>> dimensions:
>>>>
>>>> time = UNLIMITED ; // (1 currently)
>>>>
>>>> bnds = 2 ;
>>>>
>>>> jx = 261 ;
>>>>
>>>> iy = 217 ;
>>>>
>>>> variables:
>>>>
>>>> float time(time) ;
>>>>
>>>> time:standard_name = "time" ;
>>>>
>>>> time:long_name = "time" ;
>>>>
>>>> time:bounds = "time_bnds" ;
>>>>
>>>> time:units = "hours since 1949-12-01 00:00:00 UTC" ;
>>>>
>>>> time:calendar = "standard" ;
>>>>
>>>> time:axis = "T" ;
>>>>
>>>> double time_bnds(time, bnds) ;
>>>>
>>>> float jx(jx) ;
>>>>
>>>> jx:long_name = "x-coordinate in Cartesian system" ;
>>>>
>>>> jx:units = "m" ;
>>>>
>>>> jx:axis = "X" ;
>>>>
>>>> float iy(iy) ;
>>>>
>>>> iy:long_name = "y-coordinate in Cartesian system" ;
>>>>
>>>> iy:units = "m" ;
>>>>
>>>> iy:axis = "Y" ;
>>>>
>>>> float aod(time, iy, jx) ;
>>>>
>>>> aod:standard_name = "atmosphere_optical_thickness_due_to_aerosol" ;
>>>>
>>>> aod:long_name = "Aerosol optical thickness in the visible band" ;
>>>>
>>>> aod:units = "1" ;
>>>>
>>>> aod:cell_methods = "time: point"
>>>>
>>>>
>>>>
>>>>
>>>> please provide some information?
>>>>
>>>>
>>>>
>>>> ---
>>>> Kunal
>>>>
>>>>
>>>>
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-- 
Barry H. Lynn, Ph.D
Senior Associate Scientist, Lecturer,
The Institute of the Earth Science,
The Hebrew University of Jerusalem,
Givat Ram, Jerusalem 91904, Israel
Tel: 972 547 231 170
Fax: (972)-25662581

C.E.O, Weather It Is, LTD
Weather and Climate Focus
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