[ncl-talk] drawing satellite passes(14 per day)

[Dennis Shea]

   diri  = "./"           ; input directory
   fili    = systemfunc("cd "+diri+" ; ls MT1SAPS*h5")   ; all desired files
   print(fili)
   nfili  = dimsizes(fili)

   res = True                                             ; define once
   res at gsnDraw           = False
   res at gsnFrame         = False
   res at gsnAddCyclic    = False

   res1 = True
       :
   wks   = gsn_open_wks ("PDF","xx1")

   do nf=0,nfili-1                                               ;
loop over each file
         rh  =
         if (nf.eq.0) then
              PLOT = gsn_csm_contour_map (wks, rh, res)
         else
             plot      =  gsn_csm_contour(wks, rh, res)
             overlay(PLOT, plot)
         end if
    end do           ; nf loop

   draw(PLOT)
   frame(wks)

===============

Why are you doing this

 delete(fn)
 delete(f)
 delete(vnlon)
 delete(ulon)
 delete(vnlat)
 delete(ulat)
 delete(vnrr)
 delete(urr)
 delete(rr)
 delete(dims)
 delete(nlon)
 delete(nlat)

If the variables are the same size, they will overwrite the previous values.

If they are not the same size:

    delete( [/ fn, f, vnlon, ulon,......... /] )     delete multiple
variable in one command

or, use NCL's   := reassignment syntax

     urr := f->$vnrr$   ; if urr exists; delete and  write with new values

http://www.ncl.ucar.edu/Document/Manuals/Ref_Manual/NclVariables.shtml#Reassignment

====







On Thu, Nov 12, 2015 at 10:25 PM, Ipsita Putatunda
<ipsita.putatunda at gmail.com> wrote:
> Dear NCL users,
>      I want to make a single plot for all satellite passes (15 swath per
> day) data. the script and the plot am getting from this is as attached. for
> testing purpose I made it with only two files, but still the plot is not
> coming exactly what I want. Could you please help me to fix this issue. Is
> there any simpler way to do this plot? Any help in this issue will be
> appreciated.
>
> Thanks in advance,
> Ipsita
>
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