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

[Dennis Shea]

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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