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

[Dennis Shea]

The 'radar' examples were contributed by external users.
Sorry ... The files are not available.


On Thu, Jul 11, 2019 at 2:14 AM Md. Jalal Uddin <dmjalal90 at gmail.com> wrote:

> 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
>>>>> _______________________________________________
>>>>> ncl-talk mailing list
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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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