/usr/share/ncarg/nclex/contourplot/cn07n.ncl is in libncarg-data 6.3.0-6build1.
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: cn07n.ncl
;
; Author: Ethan Alpert
; National Center for Atmospheric Research
; PO 3000, Boulder, Colorado
;
; Converted to NCL by Ed Stautler
;
; Date: Fri Apr 28 11:43:39 MDT 1995
;
; Description: Reads a netCDF file and produces a series of
; contour plots.
;
begin
;
; Open NetCDF file containing Geo-Potential height forecast information
;
filedir = ncargpath("data")
filename = filedir + "/cdf/contour.cdf"
a = addfile(filename,"r")
;
; Set the color map.
;
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/) /)
wks_type = "ncgm"
if (str_lower(wks_type).eq."ncgm")
;
; Open NCGM workstation.
;
wks = create "cn07Work" ncgmWorkstationClass defaultapp
"wkMetaName" : "cn07n.ncgm"
"wkColorMap" : cmap
end create
end if
if (str_lower(wks_type).eq."x11") then
;
; Create an X workstation.
;
wks = create "cn07Work" windowWorkstationClass defaultapp
"wkPause" : True
"wkColorMap" : cmap
end create
end if
if (str_lower(wks_type).eq."oldps") then
;
; Open PS workstation.
;
wks = create "cn07Work" psWorkstationClass defaultapp
"wkPSFileName" : "cn07n.ps"
"wkColorMap" : cmap
end create
end if
if (str_lower(wks_type).eq."oldpdf") then
;
; Open PDF workstation.
;
wks = create "cn07Work" pdfWorkstationClass defaultapp
"wkPDFFileName" : "cn07n.pdf"
"wkColorMap" : cmap
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 "cn07Work" documentWorkstationClass defaultapp
"wkFileName" : "cn07n"
"wkFormat" : wks_type
"wkColorMap" : cmap
end create
end if
if (str_lower(wks_type).eq."png") then
;
; Open cairo PNG workstation.
;
wks = create "cn07Work" imageWorkstationClass defaultapp
"wkFileName" : "cn07n"
"wkFormat" : wks_type
"wkColorMap" : cmap
end create
end if
;
; Create a scalar field object and configure the missing values and
; the start and end information.
;
field1 = create "field1" scalarFieldClass defaultapp
"sfDataArray" : a->Z(0,3,:,:)
"sfMissingValueV": a->Z@_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
;
; Create a contour object
;
con1 = create "con1" contourPlotClass wks
"vpXF": .2
"vpYF": .8
"vpWidthF" : .6
"vpHeightF" : .6
"cnScalarFieldData" : field1
"cnLevelSelectionMode" : "ManualLevels"
"cnMinLevelValF" : 5400.0
"cnMaxLevelValF" : 5950.0
"cnLevelSpacingF" : 50.0
"cnLowLabelsOn" : True
"cnHighLabelsOn" : True
"cnFillOn" : True
"trXMinF" : -140.0
"trXMaxF" : -52.5
"trYMinF" : 20.0
"trYMaxF" : 60.0
"tiMainString" : "Geo-potential height @500mb"
"tiXAxisString" : "Lon"
"tiYAxisString" : "Lat"
"tmXBMode" : "EXPLICIT"
"tmXBValues" : (/-60, -75, -90, -105, -120, -135 /)
"tmXBLabels" : (/"60W", "75W", "90W", "105W", "120W", "135W"/)
"tmYLMode" : "EXPLICIT"
"tmYLValues" : (/60, 50, 40 , 30, 20/)
"tmYLLabels" : (/"60N", "50N", "40N", "30N", "20N"/)
"tmXMajorGrid" : True
"tmYMajorGrid" : True
"tmXBMinorOn" : False
"tmYLMinorOn" : False
end create
draw(con1)
frame(wks)
;
; Loop on remaining time steps
;
do i = 1, filevardimsizes(a,"frtime") - 1
setvalues field1
"sfDataArray" : a->Z(i,3,:,:)
end setvalues
draw(con1)
frame(wks)
end do
end
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