/usr/share/ncarg/nclex/contourplot/cn09n.ncl is in libncarg-data 6.1.2-7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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; ;
; Copyright (C) 1995 ;
; University Corporation for Atmospheric Research ;
; All Rights Reserved ;
; ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;
; File: cn09n.ncl
;
; Author: Ethan Alpert
; National Center for Atmospheric Research
; PO 3000, Boulder, Colorado
;
; Converted to NCL by Ed Stautler
;
; Date: Fri Apr 28 11:37:28 MDT 1995
;
; Description: Reads a netCDF file and produces a series of
; surface pressure contour plots.
;
begin
;
; Open up data file containing surface pressure data for
; entire globe
;
filedir = ncargpath("data")
filename = filedir + "/cdf/contour.cdf"
a = addfile(filename,"r")
;
; set color table
;
cmap = (/ (/0.0, 0.0, 0.0/), \
(/1.0, 1.0, 1.0/), \
(/0.0, 0.0, 0.0/), \
(/1.0, 0.0, 0.0/), \
(/0.0, 1.0, 0.0/), \
(/0.0, 0.0, 1.0/), \
(/1.0, 1.0, 0.0/), \
(/0.0, 1.0, 1.0/), \
(/1.0, 0.0, 1.0/), \
(/0.5, 0.0, 0.0/), \
(/0.5, 1.0, 1.0/), \
(/0.0, 0.0, 0.5/), \
(/1.0, 1.0, 0.5/), \
(/0.5, 0.0, 1.0/), \
(/1.0, 0.5, 0.0/), \
(/0.0, 0.5, 1.0/), \
(/0.5, 1.0, 0.0/), \
(/0.5, 0.0, 0.5/), \
(/0.5, 1.0, 0.5/), \
(/1.0, 0.5, 1.0/), \
(/0.0, 0.5, 0.0/), \
(/0.5, 0.5, 1.0/), \
(/1.0, 0.0, 0.5/) /)
wks_type = "ncgm"
if (str_lower(wks_type).eq."ncgm")
;
; Open NCGM workstation.
;
wks = create "cn09Work" ncgmWorkstationClass defaultapp
"wkMetaName" : "cn09n.ncgm"
"wkColorMap" : cmap
end create
end if
if (str_lower(wks_type).eq."x11") then
;
; Create an X workstation.
;
wks = create "cn09Work" windowWorkstationClass defaultapp
"wkColorMap" : cmap
"wkPause" : True
end create
end if
if (str_lower(wks_type).eq."oldps") then
;
; Open PS workstation.
;
wks = create "cn09Work" psWorkstationClass defaultapp
"wkColorMap" : cmap
"wkPSFileName" : "cn09n.ps"
end create
end if
if (str_lower(wks_type).eq."oldpdf") then
;
; Open PDF workstation.
;
wks = create "cn09Work" pdfWorkstationClass defaultapp
"wkColorMap" : cmap
"wkPDFFileName" : "cn09n.pdf"
end create
end if
if (str_lower(wks_type).eq."pdf".or.str_lower(wks_type).eq."ps") then
;
; Open cairo PS/PDF workstation.
;
wks = create "cn09Work" documentWorkstationClass defaultapp
"wkColorMap" : cmap
"wkFileName" : "cn09n"
"wkFormat" : wks_type
end create
end if
if (str_lower(wks_type).eq."png") then
;
; Open cairo PNG workstation.
;
wks = create "cn09Work" imageWorkstationClass defaultapp
"wkColorMap" : cmap
"wkFileName" : "cn09n"
"wkFormat" : wks_type
end create
end if
;
; Read in surface pressure and convert it to millibars
;
p = a->Psl/100.0
frtime = a->frtime
;
; Creates scalar field configured with first time step
; of pressure data
;
field1 = create "field1" scalarFieldClass defaultapp
"sfDataArray" : p(0,:,:)
"sfMissingValueV" : p@_FillValue
"sfXCStartV" : a->lon(0)
"sfXCEndV" : a->lon(filevardimsizes(a,"lon")- 1)
"sfYCStartV" : a->lat(0)
"sfYCEndV" : a->lat(filevardimsizes(a,"lat") - 1)
end create
;
; Creates contour object using manual level spacing and solid
; color fill
;
con1 = create "con1" contourPlotClass wks
"cnScalarFieldData" : field1
"cnLevelSelectionMode" : "ManualLevels"
"cnMinLevelValF" : 960.0
"cnMaxLevelValF" : 1040.0
"cnLevelSpacingF" : 5.0
"cnMaxLevelCount" : 25
"cnInfoLabelOn" : "OFF"
"cnHighLabelsOn" : "OFF"
"cnLowLabelsOn" : "OFF"
"cnLineLabelsOn" : False
"cnLinesOn" : False
"cnFillOn" : True
"tiMainString" : "Forecast Time " + 0
end create
;
; Draw first frame
;
draw(con1)
frame(wks)
;
; Loop and draw remaining frames reseting the scalar field object
; with a new array for each iteration
;
do i = 1, dimsizes(frtime) - 1
setvalues field1
"sfDataArray" : p(i,:,:)
end setvalues
setvalues con1
"tiMainString" : "Forecast Time " + frtime(i)
end setvalues
draw(con1)
frame(wks)
end do
delete(a)
delete(con1)
delete(wks)
delete(field1)
delete(i)
delete(p)
delete(frtime)
end
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