[ncl-talk] r,theta (radar) plotting

[Md. Jalal Uddin]

Thank you, sir, for your kind suggestion.

Could I have the data cfrad.20080604_002217.nc of radar_2.ncl example?


On Wed, 10 Jul 2019 at 22:11, Dennis Shea <shea at ucar.edu> wrote:

> re: How can I plot for multiple centers?
>
> Use a do loop:
>
> do nc_plot=0,nctr-1                        ; loop over centers
>     :
>
> end do
> ==============
>
> re: How can I set x tick and y tick (-300,300) like radar_2 example?
>
> radar_2  uses cartesian coordinates not lat/lon
>
> A minor  minor addition to place a grid over the middle figure.
>
> *https://www.ncl.ucar.edu/Applications/regrid.shtml* <https://www.ncl.ucar.edu/Applications/regrid.shtml>
> Example 15
>
> If you want to convert to cartesian, you will have to do that yourself.
>
>
>
>
> On Tue, Jul 9, 2019 at 3:00 AM Md. Jalal Uddin <dmjalal90 at gmail.com>
> wrote:
>
>> Thank you, sir. regrid_15 example works very well for one center
>> (attached figure).
>>
>> How can I plot for multiple centers?
>> How can I set x tick and y tick (-300,300) like radar_2 example? (
>> https://www.ncl.ucar.edu/Applications/Scripts/radar_2.ncl)
>>
>> On Tue, Jul 9, 2019 at 5:42 AM Dennis Shea <shea at ucar.edu> wrote:
>>
>>> Not sure what you are asking: What does "my TRMM rainfall data" look
>>> like.
>>> ===
>>>
>>> Generally: TRMM is on a 0.25 global rectilinear grid [400x1440] spanning
>>> 49.875S to 49.875N
>>>
>>> ===
>>>
>>> If you have the latitudes and longitudes corresponding to some  r,theta
>>> [say: plat(:,:), plon(:,:) ] then use
>>>
>>> res at sfXArray = plon
>>> res at sfYArray = plat
>>>
>>> and use appropriate contour function.
>>> ====
>>>
>>> If you want to specify some central location [clat, clon] then maybe
>>>
>>> *http://www.ncl.ucar.edu/Applications/regrid.shtml*
>>> <http://www.ncl.ucar.edu/Applications/regrid.shtml>
>>> Example 15
>>>
>>> If you do not want the plot over a map: eliminate 'mp' related resources
>>> and use (say) gsn_csm_contour instead of gsn_csm_contour_map. See the
>>> leftmost and center figures.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> On Sun, Jul 7, 2019 at 11:53 PM Md. Jalal Uddin via ncl-talk <
>>> ncl-talk at ucar.edu> wrote:
>>>
>>>> Hi all,
>>>>
>>>> How can I plot my TRMM rainfall data as a similar to radar_2 example (
>>>> https://www.ncl.ucar.edu/Applications/Scripts/radar_2.ncl)?
>>>>
>>>>  How can I modify here?
>>>>
>>>> angles       = f->azimuth
>>>>   angles(0:63) = angles(0:63)-360     ; fix to make angles monotonic
>>>>
>>>>   DEGTORAD = 0.017453292519943
>>>>   xcenter  = 0.0
>>>>   ycenter  = 0.0
>>>>   radius   = 960 * 0.25 ; this is radius in kilometers
>>>>
>>>> ; Create 2D coordinate arrays.
>>>>   inc      = radius / (dsizes(1) - 1)
>>>>   x        = inc * ispan(0,dsizes(1)-1,1)
>>>>   angles2d = conform(dbz,angles,0)
>>>>   x2d      = conform(dbz,x,1)
>>>>   xarr     =  xcenter + x2d  * cos(DEGTORAD * angles2d)
>>>>   yarr     =  ycenter + x2d  * sin(DEGTORAD * angles2d)
>>>>
>>>>
>>>> Best wishes,
>>>> Jalal
>>>> --
>>>> *Md. Jalal Uddin*
>>>> MSc in Applied Meteorology (English Language)
>>>> Nanjing University of Information, Science and Technology, China
>>>> B.Sc. in Disaster Management (Hons.)
>>>> Patuakhali Science and Technology University, Bangladesh.
>>>> Cell: +8613260859092, +8801792052662
>>>> Web: www.dmjalal90.weebly.com
>>>> Facebook: jalal.hossen.39
>>>> LinkedIn: https://bd.linkedin.com/in/md-jalal-uddin-80a026b0
>>>> Twitter: dmjalal90
>>>> Skype: dmjalal90
>>>> _______________________________________________
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>>>
>>>
>>
>> --
>> *Md. Jalal Uddin*
>> MSc in Applied Meteorology (English Language)
>> Nanjing University of Information, Science and Technology, China
>> B.Sc. in Disaster Management (Hons.)
>> Patuakhali Science and Technology University, Bangladesh.
>> Cell: +8613260859092, +8801792052662
>> Web: www.dmjalal90.weebly.com
>> Facebook: jalal.hossen.39
>> LinkedIn: https://bd.linkedin.com/in/md-jalal-uddin-80a026b0
>> Twitter: dmjalal90
>> Skype: dmjalal90
>>
>

-- 
*Md. Jalal Uddin*
MSc in Applied Meteorology
Nanjing University of Information, Science and Technology, China
B.Sc. in Disaster Management (Hons.)
Patuakhali Science and Technology University, Bangladesh.
Cell: +8613260859092, +8801792052662
Web: www.dmjalal90.weebly.com
Facebook: jalal.hossen.39
LinkedIn: https://bd.linkedin.com/in/md-jalal-uddin-80a026b0
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