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

Thu Jul 11 21:17:24 MDT 2019

Thank you.
Is there any plots example for css2c function?

On Fri, 12 Jul 2019 at 11:12, Dennis Shea <shea at ucar.edu> wrote:

> 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
>>>>>> _______________________________________________
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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
>>
>

-- 
*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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