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C $Id: cn07f.f,v 1.9 2010-03-15 22:49:23 haley Exp $
C
C***********************************************************************
C *
C Copyright (C) 1995 *
C University Corporation for Atmospheric Research *
C The use of this Software is governed by a License Agreement *
C *
C***********************************************************************
C
C File: cn07f.f
C
C Author: Ethan Alpert (converted to Fortran by Mary Haley)
C National Center for Atmospheric Research
C PO 3000, Boulder, Colorado
C
C Date: Fri Oct 6 09:48:59 MDT 1995
C
C Description: Reads a netCDF file and produces a series of
C contour plots.
C
external NhlFAppClass
external NhlFNcgmWorkstationClass
external NhlFPSWorkstationClass
external NhlFPDFWorkstationClass
external NhlFCairoPSPDFWorkstationClass
external NhlFCairoImageWorkstationClass
external NhlFCairoWindowWorkstationClass
external NhlFScalarFieldClass
external NhlFContourPlotClass
parameter(NCOLORS=17)
integer xbvalues(6),ylvalues(5)
character*4 xblabels(6)
character*3 yllabels(5)
data xbvalues/-60,-75,-90,-105,-120,-135/
data ylvalues/60,50,40,30,20/
data xblabels/'60W','75W','90W','105W','120W','135W'/
data yllabels/'60N','50N','40N','30N','20N'/
C
C Declare variables for the HLU routine calls.
C
integer appid, workid, field1, con1
integer srlist, i
real cmap(3,NCOLORS)
C
C Declare variables for getting information from netCDF file.
C
integer ncid, lon_id, lat_id, frtime_id, Z_id, frtime(7)
real Z(36,33), spv
real lon(36), lat(33)
integer start(4), count(4), lonlen, latlen, frtimelen
character*256 filename
character*50 recname
character*7 wks_type
C
C Default is to create an NCGM file.
C
wks_type = "ncgm"
C
C Initialize the HLU library and set up resource template.
C
call NhlFInitialize
call NhlFRLCreate(srlist,'setrl')
call NhlFRLClear(srlist)
call NhlFRLSetString(srlist,'appDefaultParent','True',ierr)
call NhlFRLSetString(srlist,'appUsrDir','./',ierr)
call NhlFCreate(appid,'cn07',NhlFAppClass,0,srlist,ierr)
cmap(1,1) = 0.0
cmap(2,1) = 0.0
cmap(3,1) = 0.0
cmap(1,2) = 1.0
cmap(2,2) = 1.0
cmap(3,2) = 1.0
cmap(1,3) = 0.0
cmap(2,3) = 0.0
cmap(3,3) = 0.0
cmap(1,4) = 1.0
cmap(2,4) = 0.0
cmap(3,4) = 0.0
cmap(1,5) = 0.0
cmap(2,5) = 1.0
cmap(3,5) = 0.0
cmap(1,6) = 0.0
cmap(2,6) = 0.0
cmap(3,6) = 1.0
cmap(1,7) = 1.0
cmap(2,7) = 1.0
cmap(3,7) = 0.0
cmap(1,8) = 0.0
cmap(2,8) = 1.0
cmap(3,8) = 1.0
cmap(1,9) = 1.0
cmap(2,9) = 0.0
cmap(3,9) = 1.0
cmap(1,10) = 0.5
cmap(2,10) = 0.0
cmap(3,10) = 0.0
cmap(1,11) = 0.5
cmap(2,11) = 1.0
cmap(3,11) = 1.0
cmap(1,12) = 0.0
cmap(2,12) = 0.0
cmap(3,12) = 0.5
cmap(1,13) = 1.0
cmap(2,13) = 1.0
cmap(3,13) = 0.5
cmap(1,14) = 0.5
cmap(2,14) = 0.0
cmap(3,14) = 1.0
cmap(1,15) = 1.0
cmap(2,15) = 0.5
cmap(3,15) = 0.0
cmap(1,16) = 0.0
cmap(2,16) = 0.5
cmap(3,16) = 1.0
cmap(1,17) = 0.5
cmap(2,17) = 1.0
cmap(3,17) = 0.0
count(1) = 3
count(2) = NCOLORS
if (wks_type.eq."ncgm".or.wks_type.eq."NCGM") then
C
C Create an NCGM workstation.
C
call NhlFRLClear(srlist)
call NhlFRLSetMDFloatArray(srlist,'wkColorMap',cmap,2,count,
+ ierr)
call NhlFRLSetString(srlist,'wkMetaName','./cn07f.ncgm',ierr)
call NhlFCreate(workid,'cn07Work',
+ NhlFNcgmWorkstationClass,0,srlist,ierr)
else if (wks_type.eq."x11".or.wks_type.eq."X11") then
C
C Create an X11 workstation.
C
call NhlFRLClear(srlist)
call NhlFRLSetMDFloatArray(srlist,'wkColorMap',cmap,2,count,
+ ierr)
call NhlFRLSetString(srlist,'wkPause','True',ierr)
call NhlFCreate(workid,'cn07Work',
+ NhlFCairoWindowWorkstationClass,
+ 0,srlist,ierr)
else if (wks_type.eq."oldps".or.wks_type.eq."OLDPS") then
C
C Create an older-style PostScript workstation.
C
call NhlFRLClear(srlist)
call NhlFRLSetMDFloatArray(srlist,'wkColorMap',cmap,2,count,
+ ierr)
call NhlFRLSetString(srlist,'wkPSFileName','./cn07f.ps',ierr)
call NhlFCreate(workid,'cn07Work',
+ NhlFPSWorkstationClass,0,srlist,ierr)
else if (wks_type.eq."oldpdf".or.wks_type.eq."OLDPDF") then
C
C Create an older-style PDF workstation.
C
call NhlFRLClear(srlist)
call NhlFRLSetMDFloatArray(srlist,'wkColorMap',cmap,2,count,
+ ierr)
call NhlFRLSetString(srlist,'wkPDFFileName','./cn07f.pdf',ierr)
call NhlFCreate(workid,'cn07Work',
+ NhlFPDFWorkstationClass,0,srlist,ierr)
else if (wks_type.eq."pdf".or.wks_type.eq."PDF".or.
+ wks_type.eq."ps".or.wks_type.eq."PS") then
C
C Create a cairo PS/PDF workstation.
C
call NhlFRLClear(srlist)
call NhlFRLSetMDFloatArray(srlist,'wkColorMap',cmap,2,count,
+ ierr)
call NhlFRLSetString(srlist,'wkFileName','./cn07f',ierr)
call NhlFRLSetString(srlist,'wkFormat',wks_type,ierr)
call NhlFCreate(workid,'cn07Work',
+ NhlFCairoPSPDFWorkstationClass,0,srlist,ierr)
else if (wks_type.eq."png".or.wks_type.eq."PNG") then
C
C Create a cairo PNG workstation.
C
call NhlFRLClear(srlist)
call NhlFRLSetMDFloatArray(srlist,'wkColorMap',cmap,2,count,
+ ierr)
call NhlFRLSetString(srlist,'wkFileName','./cn07f',ierr)
call NhlFRLSetString(srlist,'wkFormat',wks_type,ierr)
call NhlFCreate(workid,'cn07Work',
+ NhlFCairoImageWorkstationClass,0,srlist,ierr)
endif
C
C Open NetCDF file containing Geo-Potential height forecast
C information.
C
call gngpat(filename,'data',ierr)
do 10 i=1,256
if( filename(i:i).eq.char(0) ) then
filename(i:i+15)='/cdf/contour.cdf'
goto 15
endif
10 continue
C
C The second argument to 'ncopn' should be NCNOWRIT, but since we
C can't include 'netcdf.inc', we are using the value '0' instead.
C
15 ncid = ncopn(filename,0,ierr)
C
C Get the lat/lon dimensions.
C
lat_id = ncdid(ncid,'lat',ierr)
lon_id = ncdid(ncid,'lon',ierr)
frtime_id = ncdid(ncid,'frtime',ierr)
call ncdinq(ncid,lat_id,recname,latlen,ierr)
call ncdinq(ncid,lon_id,recname,lonlen,ierr)
call ncdinq(ncid,frtime_id,recname,frtimelen,ierr)
frtime_id = ncvid(ncid,'frtime',ierr)
C
C Read in Z.
C
Z_id = ncvid(ncid,'Z',ierr)
start(1) = 1
start(2) = 1
start(3) = 4
start(4) = 1
count(1) = lonlen
count(2) = latlen
count(3) = 1
count(4) = 1
call ncvgt(ncid,Z_id,start,count,Z,ierr)
call ncagt(ncid,Z_id,'_FillValue',spv,ierr)
C
C Read in lat/lon/frtime values.
C
lat_id = ncvid(ncid,'lat',ierr)
count(1) = latlen
call ncvgt(ncid,lat_id,start,count,lat,ierr)
lon_id = ncvid(ncid,'lon',ierr)
count(1) = lonlen
call ncvgt(ncid,lon_id,start,count,lon,ierr)
frtime_id = ncvid(ncid,'frtime',ierr)
count(1) = frtimelen
call ncvgt(ncid,frtime_id,start,count,frtime,ierr)
C
C Create a scalar field object and configure the missing values and
C the start and end information.
C
count(1) = lonlen
count(2) = latlen
call NhlFRLClear(srlist)
call NhlFRLSetMDFloatArray(srlist,'sfDataArray',Z,2,count,
+ ierr)
call NhlFRLSetFloat(srlist,'sfMissingValueV',spv,ierr)
call NhlFRLSetFloat(srlist,'sfXCStartV',lon(1),ierr)
call NhlFRLSetFloat(srlist,'sfXCEndV',lon(lonlen),ierr)
call NhlFRLSetFloat(srlist,'sfYCStartV',lat(1),ierr)
call NhlFRLSetFloat(srlist,'sfYCEndV',lat(latlen),ierr)
call NhlFCreate(field1,'field1',NhlFscalarFieldClass,appid,srlist,
+ ierr)
C
C Create contour object.
C
call NhlFRLClear(srlist)
call NhlFRLSetFloat(srlist,'vpXF',.2,ierr)
call NhlFRLSetFloat(srlist,'vpYF',.8,ierr)
call NhlFRLSetFloat(srlist,'vpWidthF',.6,ierr)
call NhlFRLSetFloat(srlist,'vpHeightF',.6,ierr)
call NhlFRLSetInteger(srlist,'cnScalarFieldData',field1,ierr)
call NhlFRLSetString(srlist,'cnLevelSelectionMode','ManualLevels',
+ ierr)
call NhlFRLSetFloat(srlist,'cnMinLevelValF',5400.0,ierr)
call NhlFRLSetFloat(srlist,'cnMaxLevelValF',5950.0,ierr)
call NhlFRLSetFloat(srlist,'cnLevelSpacingF',50.0,ierr)
call NhlFRLSetString(srlist,'cnLowLabelsOn','True',ierr)
call NhlFRLSetString(srlist,'cnHighLabelsOn','True',ierr)
call NhlFRLSetString(srlist,'cnFillOn','True',ierr)
call NhlFRLSetFloat(srlist,'trXMinF',-140.0,ierr)
call NhlFRLSetFloat(srlist,'trXMaxF',-52.5,ierr)
call NhlFRLSetFloat(srlist,'trYMinF',20.0,ierr)
call NhlFRLSetFloat(srlist,'trYMaxF',60.0,ierr)
call NhlFRLSetString(srlist,'tiMainString',
+ 'Geo-potential height @500mb',ierr)
call NhlFRLSetString(srlist,'tiXAxisString','Lon',ierr)
call NhlFRLSetString(srlist,'tiYAxisString','Lat',ierr)
call NhlFRLSetString(srlist,'tmXBMode','EXPLICIT',ierr)
call NhlFRLSetIntegerArray(srlist,'tmXBValues',xbvalues,6,ierr)
call NhlFRLSetStringArray(srlist,'tmXBLabels',xblabels,6,ierr)
call NhlFRLSetString(srlist,'tmYLMode','EXPLICIT',ierr)
call NhlFRLSetIntegerArray(srlist,'tmYLValues',ylvalues,5,ierr)
call NhlFRLSetStringArray(srlist,'tmYLLabels',yllabels,5,ierr)
call NhlFRLSetString(srlist,'tmXMajorGrid','True',ierr)
call NhlFRLSetString(srlist,'tmYMajorGrid','True',ierr)
call NhlFRLSetString(srlist,'tmXBMinorOn','False',ierr)
call NhlFRLSetString(srlist,'tmYLMinorOn','False',ierr)
call NhlFCreate(con1,'con1',NhlFcontourPlotClass,workid,srlist,
+ ierr)
C
C Draw first frame
C
call NhlFDraw(con1,ierr)
call NhlFFrame(workid,ierr)
C
C Loop on remaining time steps.
C
do 60 i = 2,frtimelen
C
C Read in new section of Z.
C
start(1) = 1
start(2) = 1
start(3) = 4
start(4) = i
count(1) = lonlen
count(2) = latlen
count(3) = 1
count(4) = 1
call ncvgt(ncid,Z_id,start,count,Z,ierr)
C
C Create new scalar field.
C
call NhlFRLClear(srlist)
count(1) = lonlen
count(2) = latlen
call NhlFRLSetMDFloatArray(srlist,'sfDataArray',Z,2,count,
+ ierr)
call NhlFSetValues(field1,srlist,ierr)
call NhlFDraw(con1,ierr)
call NhlFFrame(workid,ierr)
60 continue
C
C Close the netCDF file.
C
call ncclos(ncid,ierr)
C
C NhlFDestroy destroys the given id and all of its children.
C
call NhlFRLDestroy(srlist)
call NhlFDestroy(appid,ierr)
C
C Restores state.
C
call NhlFClose
stop
end
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