Dear NCL users,
I was hoping you could help me sort out the problem!
I ran a code from NCL website, adapted it for my data, though I ended up
having this error:
fatal:Subscript out of range, error in subscript #0
fatal:An error occurred reading lon2d
fatal:Execute: Error occurred at or near line 120 in file storm_track.ncl
The error line I highlighted in the code:
;********************************************************
; Plot storm stracks from wrfout files.
;********************************************************
;
; JUN-18-2005
; So-Young Ha (MMM/NCAR)
; SEP-01-2006
; Slightly modified by Mary Haley to add some extra comments.
; ===========================================
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRF_contributed.ncl"
load "$NCARG_ROOT/lib/ncarg/nclscripts/wrf/WRFUserARW.ncl"
begin
; DATES
date =
(/1000,1012,1100,1112,1200,1212,1300,1312,1400,1412,1500,1512,1600,1612,1700,1712,1800,1812,1900,1912,2000,2012,2100,2112,2200,2212,2300,2312,2400,2412,2500,2512,2600,2612,2700,2712,2800,2812/)
ndate = dimsizes(date)
sdate = sprinti("%4.0i",date)
; Experiment name (for legend)
EXP = (/"EXP_I"/) ; (/"EXP_I","EXP_II","EXP_III"/)
nexp = dimsizes(EXP)
; To get lat/lon info.
a = addfile("wrfout_d02_2011-03-10_00:00:00"+".nc","r")
lat2d = a->XLAT(0,:,:)
lon2d = a->XLONG(0,:,:)
dimll = dimsizes(lat2d)
nlat = dimll(0)
mlon = dimll(1)
; Sea Level Pressure
slp = wrf_user_getvar(a,"slp",0)
dims = dimsizes(slp)
; Array for track
time = new(ndate,string)
imin = new(ndate,integer)
jmin = new(ndate,integer)
smin = new(ndate,integer)
; =======
; ndate
; =======
fs = systemfunc("ls wrfout_d02_2011-03-10_00:00:00")
nfs= dimsizes(fs)
print(nfs)
if(nfs .ne. ndate) then
print("Check input data:"+nfs+" .ne. "+ndate)
end if
do ifs=0,nfs-1
f = addfile("wrfout_d02_2011-03-10_00:00:00"+".nc","r")
;time(ifs) = wrf_user_list_times(a)
;time(ifs)= chartostring( time(ifs))
Times = f->Times ; Times(Time, DateStrLen) (type
character)
Time_s = chartointeger( Times ) ; string
Time = wrf_times_c( Times,1) ; "hours since" initial time on file
(double)
;time(ifs) = wrf_times_c(time(ifs),1)
;print(time(ifs))
print(Time)
slp2d = wrf_user_getvar(f,"slp",ifs)
; We need to convert 2-D array to 1-D array to find the minima.
slp1d = ndtooned(slp2d)
smin(ifs) = minind(slp1d)
; Convert the index for 1-D array back to the indeces for 2-D array.
minij = ind_resolve(ind(slp1d.eq.min(slp2d)),dims)
imin(ifs) = minij(0,0)
jmin(ifs) = minij(0,1)
print(imin(ifs));
print(jmin(ifs));
print(time(ifs)+" : "+min(slp2d)+" ("+imin(ifs)+","+jmin(ifs)+")")
end do
;
; Graphics section
wks=gsn_open_wks("ps","track") ; Open PS file.
gsn_define_colormap(wks,"BlGrYeOrReVi200") ; Change color map.
res = True
res@gsnDraw = False ; Turn off draw.
res@gsnFrame = False ; Turn off frame advance.
res@gsnMaximize = True ; Maximize plot in frame.
res@tiMainString = "Hurricane Isabel" ; Main title
WRF_map_c(a,res,0) ; Set up map resources
; (plot options)
plot = gsn_csm_map(wks,res) ; Create a map.
; Set up resources for polymarkers.
gsres = True
gsres@gsMarkerIndex = 16 ; filled dot
;gsres@gsMarkerSizeF = 0.005 ; default - 0.007
cols = (/5,160,40/)
; Set up resources for polylines.
res_lines = True
res_lines@gsLineThicknessF = 3. ; 3x as thick
dot = new(ndate,graphic) ; Make sure each gsn_add_polyxxx call
line = new(ndate,graphic) ; is assigned to a unique variable.
; Loop through each date and add polylines to the plot.
printVarSummary(lon2d)
printVarSummary(ndate)
do i = 0,ndate-1;
res_lines@gsLineColor = cols(0)
xx=(/lon2d(imin(i),jmin(i)),lon2d(imin(i+1),jmin(i+1))/)
yy=(/lat2d(imin(i),jmin(i)),lat2d(imin(i+1),jmin(i+1))/)
line(i) = gsn_add_polyline(wks,plot,xx,yy,res_lines)
end do
lon1d = ndtooned(lon2d)
lat1d = ndtooned(lat2d)
; Loop through each date and add polymarkers to the plot.
do i = 0,ndate-1
print("dot:"+lon1d(smin(i))+","+lat1d(smin(i)))
gsres@gsMarkerColor = cols(0)
dot(i)=gsn_add_polymarker(wks,plot,lon1d(smin(i)),lat1d(smin(i)),gsres)
end do
; Date (Legend)
txres = True
txres@txFontHeightF = 0.015
txres@txFontColor = cols(0)
txid1 = new(ndate,graphic)
; Loop through each date and draw a text string on the plot.
do i = 0, ndate-1
txres@txJust = "CenterRight"
ix = smin(i) - 4
print("Eye:"+ix)
if(i.eq.1) then
txres@txJust = "CenterLeft"
ix = ix + 8
end if
txid1(i) = gsn_add_text(wks,plot,sdate(i),lon1d(ix),lat1d(ix),txres)
end do
; Add marker and text for legend. (Or you can just use "pmLegend" instead.)
txres@txJust = "CenterLeft"
txid2 = new(nexp,graphic)
pmid2 = new(nexp,graphic)
do i = 0,nexp-1
gsres@gsMarkerColor = cols(i)
txres@txFontColor = cols(i)
ii = ((/129,119,109/)) ; ilat
jj = ((/110,110,110/)) ; jlon
ji = ii*mlon+jj ; col x row
pmid2(i) = gsn_add_polymarker(wks,plot,lon1d(ji(i)),lat1d(ji(i)),gsres)
txid2(i) =
gsn_add_text(wks,plot,EXP(i),lon1d(ji(i)+5),lat1d(ji(i)),txres)
end do
draw(plot)
frame(wks)
end
-- regards ******************************************************* *Alexander Semenov* PhD Student - Research Assistant International Arctic Research Center Department of atmospheric sciences University of Alaska Fairbanks
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Received on Wed Jan 18 14:02:50 2012
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