[ncl-talk] Problem with trajectory (solid lines) plotting.....

[qudsia zafar]

Hi all,

I am trying to plot trajectories of 'solid lines' but i get 'dotted lines'
every time upon looping gsn_polyline function. The resource
'gsLineThicknessF = 1' works but 'gsLineDashPattern = 0 does not.  Moreover
is there a predefined function available to 'curl' the trajectories
arriving the source location? Below is what i am working at:

load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"

begin


 fname = "tdump_750_JF.txt"
 ncols = numAsciiCol(fname)
; print(ncols)

 data = readAsciiTable(fname,ncols,"float",0)
; print(data)


 delim= " "


;printVarSummary(data)


 fld = str_get_field(data, 1, delim)

;print(fld)


  dims = dimsizes(fld)
  ntime = dims(0)




 wks = gsn_open_wks("x11","traj")               ; open workstation

  gsn_define_colormap (wks,"GMT_haxby")            ;  (amwg256")
  cmap = gsn_retrieve_colormap (wks)

  ;print(cmap)




cnlevels = fspan(0,8263.2,26)                       ;   make 26 levels

   res            = True                          ; map resources
   res at gsnDraw    = False                         ; don't draw
   res at gsnFrame   = False                         ; don't advance frame
   res at vpWidthF   = 0.80                          ; make map bigger
   res at vpHeightF  = 0.80
   res at mpFillOn                    = False        ; turn off gray fill
  res at mpOutlineBoundarySets       = "National"   ; turn on country
boundaries
  res at mpGeophysicalLineColor      = "Navy"       ; color of cont. outlines
  res at mpGeophysicalLineThicknessF = 1.5          ; thickness of outlines
   res at mpMaxLatF  = 60                           ; select subregion
   res at mpMinLatF  = -20
   res at mpMinLonF  = 40
   res at mpMaxLonF  = 90


   res at mpGridSpacingF = 10.0


  res_lb                    = True
   res_lb at vpWidthF           = 0.60
   res_lb at vpHeightF          = 0.10
   res_lb at lbPerimOn          = True; False            ; Turn off perimeter.
   res_lb at lbOrientation      = "Horizontal"     ; Default is vertical.
   res_lb at lbLabelStride      = 2
   res_lb at lbLabelAlignment   = "InteriorEdges"  ; Default is "BoxCenters".
   res_lb at lbFillColors       = cmap;rgb_array; cmap(1:,:)       ; Colors
for boxes.
   res_lb at cnLevels           = fspan(0,8263.2,26)
   res_lb at lbMonoFillPattern  = True             ; Fill them all solid.
   res_lb at lbLabelFontHeightF = 0.015


   map = gsn_csm_map_ce(wks,res)                         ; create map
  draw(map)


;*********************************************
; trajectory parameters
;*********************************************

arr2=(/0,483,899,1352,1825,2309,2778,3262,3702,4186,4619,5030,5469,5890,6308,6770,7190,7615,8029,8492,8945,9429,9896,10380,10709,11009,11275/)
   ; 5-d trajectories for 26 days. every element defines the end of each
day...


 aod = new(26,float)
 aod = 0.0

  do i = 0, 25

 aod(i) = data(arr2(i),11)

 end do

print(aod)


  ; traj = (/1,10,53,67,80/)          ; choose which trajectories to plot
;*********************************************
; some plot parameters
;*********************************************
   pres                  = True               ; polyline resources
   pres at gsLineThicknessF = 1

   pres at gsLineDashPattern = 0


   mres  = True                               ; marker resources
   first = True                               ; start of traj resources
;********************************

   do days = 0,25

  ;   print(days)

  do i = arr2(days),arr2(days+1)-1

 ;print("qudsia"+i)

  ndays = (arr2(days+1)-1)-arr2(days)

   xpt = new(ndays,float)            ; allocate memory
   ypt = new(ndays,float)
 ; aod = new(ndays,float)
   xpt = 0.0
   ypt = 0.0
 ;  aod = 0.0

      ypt = data(i,9)                  ; extract lat from whole array
      xpt = data(i,10)                  ; extract lon from whole array
     aod = data(i,11)


  pres at gsLineColor=GetFillColor(cnlevels,cmap,aod(days))   ; color each
trajectory according to height.


 do pt= 0, dimsizes(xpt)-2

    gsn_polyline(wks,map,(/xpt(pt),xpt(pt+1)/),(/ypt(pt),ypt(pt+1)/),pres)

  end do


end do


  delete(xpt)
  delete(ypt)
 ; delete(aod)

end do
  gsn_labelbar_ndc(wks,dimsizes(cnlevels)+1,cnlevels,0.30,0.30,res_lb)

   frame(wks)
end


Any help would be appreciated.

Qudsia
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