[ncl-talk] Cartesian coordinate plotting
Dennis Shea
shea at ucar.edu
Tue Jul 23 21:25:28 MDT 2019
[1]
I am not sure why you want to convert to a Cartesian coordinate system.
No extra information is provided and you lose geographic referencing.
[2] Not sure why you are using the following example as a basis:
*http://www.ncl.ucar.edu/Applications/regrid.shtml*
<http://www.ncl.ucar.edu/Applications/regrid.shtml>
regrid_15.ncl
[3] You can convert a region (say: 300km ) around a specified map location
[clat, clon] and directly convert to Cartesian. See attached.
On Fri, Jul 19, 2019 at 1:53 AM Md. Jalal Uddin via ncl-talk <
ncl-talk at ucar.edu> wrote:
> Hi all,
>
> I set a Cartesian coordinate (x,y) below.
>
> pi = 3.141593
> deg2rad = pi/180.
>
> earth_radius = 6371.
>
> r = ispan(0,300,10)
> theta = ispan(0,360,10)
>
> x =
> conform_dims((/dimsizes(r),dimsizes(theta)/),r,0)*cos(conform_dims((/dimsizes(r),dimsizes(theta)/),theta,1)*deg2rad)
> y =
> conform_dims((/dimsizes(r),dimsizes(theta)/),r,0)*sin(conform_dims((/dimsizes(r),dimsizes(theta)/),theta,1)*deg2rad)
>
> ;printVarSummary(x) ; [31] x [37]
> ;printVarSummary(y) ; [31] x [37]
>
>
> My precipitation data within 300 Km from the center lat and lon.
> cen_avg = dim_avg_n_Wrap(time_avg,0) ;[radius | 31] x [circle | 180]
>
> How can I conform to cen_avg data as x, y and plot? Full code in the
> attached file?
>
> ;Jalal
>
> --
> *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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