/usr/share/ncarg/hluex/ngmath/nm03f.f is in libncarg-data 6.3.0-6build1.
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C $Id: nm03f.f,v 1.7 2010-03-15 22:49:24 haley Exp $
C
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
C C
C Copyright (C) 1997 C
C University Corporation for Atmospheric Research C
C All Rights Reserved C
C C
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
C
C File: nm03f.c
C
C Author: Mary Haley (taken from one of Fred Clare's examples)
C National Center for Atmospheric Research
C PO 3000, Boulder, Colorado
C
C Date: Mon Dec 22 11:49:46 MST 1997
C
C Description: How to compute aspects and slopes.
C
external NhlFAppClass
external NhlFNcgmWorkstationClass
external NhlFPSWorkstationClass
external NhlFPDFWorkstationClass
external NhlFCairoPSPDFWorkstationClass
external NhlFCairoImageWorkstationClass
external NhlFCairoWindowWorkstationClass
external NhlFScalarFieldClass
external NhlFVectorFieldClass
external NhlFContourPlotClass
external NhlFVectorPlotClass
parameter(NumIn=171,NumXOut=21,NumYOut=21)
parameter(IDIM=2*NumXOut*NumYOut)
parameter(RAD2DEG = 57.29578)
real xo(NumXOut), yo(NumYOut), zo(NumXOut,NumYOut)
real rtmp(NumXOut,NumYOut),u(NumXOut,NumYOut),v(NumXOut,NumYOut)
real x(NumIn),y(NumIn),z(NumIn)
data x/
+ 1.16, 0.47, 0.29, 0.72, 0.52, 1.12, 0.33, 0.20, 0.30,
+ 0.78, 0.92, 0.52, 0.44, 0.22, -0.10, 0.11, 0.59, 1.13,
+ 0.68, 1.11, 0.93, 0.29, 0.74, 0.43, 0.87, 0.87, -0.10,
+ 0.26, 0.85, 0.00, -0.02, 1.01, -0.12, 0.65, 0.39, 0.96,
+ 0.39, 0.38, 0.94, -0.03, -0.17, 0.00, 0.03, 0.67, -0.06,
+ 0.82, -0.03, 1.08, 0.37, 1.02, -0.11, -0.13, 1.03, 0.61,
+ 0.26, 0.18, 0.62, 0.42, 1.03, 0.72, 0.97, 0.08, 1.18,
+ 0.00, 0.69, 0.10, 0.80, 0.06, 0.82, 0.20, 0.46, 0.37,
+ 1.16, 0.93, 1.09, 0.96, 1.00, 0.80, 0.01, 0.12, 1.01,
+ 0.48, 0.79, 0.04, 0.42, 0.48, -0.18, 1.16, 0.85, 0.97,
+ 0.14, 0.40, 0.78, 1.12, 1.19, 0.68, 0.65, 0.41, 0.90,
+ 0.84, -0.11, -0.01, -0.02, -0.10, 1.04, 0.58, 0.61, 0.12,
+ -0.02, -0.03, 0.27, 1.17, 1.02, 0.16, -0.17, 1.03, 0.13,
+ 0.04, -0.03, 0.15, 0.00, -0.01, 0.91, 1.20, 0.54, -0.14,
+ 1.03, 0.93, 0.42, 0.36, -0.10, 0.57, 0.22, 0.74, 1.15,
+ 0.40, 0.82, 0.96, 1.09, 0.42, 1.13, 0.24, 0.51, 0.60,
+ 0.06, 0.38, 0.15, 0.59, 0.76, 1.16, 0.02, 0.86, 1.14,
+ 0.37, 0.38, 0.26, 0.26, 0.07, 0.87, 0.90, 0.83, 0.09,
+ 0.03, 0.56, -0.19, 0.51, 1.07, -0.13, 0.99, 0.84, 0.22/
data y/
+ -0.11, 1.07, 1.11, -0.17, 0.08, 0.09, 0.91, 0.17, -0.02,
+ 0.83, 1.08, 0.87, 0.46, 0.66, 0.50, -0.14, 0.78, 1.08,
+ 0.65, 0.00, 1.03, 0.06, 0.69, -0.16, 0.02, 0.59, 0.19,
+ 0.54, 0.68, 0.95, 0.30, 0.77, 0.94, 0.76, 0.56, 0.12,
+ 0.05, -0.07, 1.01, 0.61, 1.04, -0.07, 0.46, 1.07, 0.87,
+ 0.11, 0.63, 0.06, 0.53, 0.95, 0.78, 0.48, 0.45, 0.77,
+ 0.78, 0.29, 0.38, 0.85, -0.10, 1.17, 0.35, 1.14, -0.04,
+ 0.34, -0.18, 0.78, 0.17, 0.63, 0.88, -0.12, 0.58, -0.12,
+ 1.00, 0.99, 0.45, 0.86, -0.15, 0.97, 0.99, 0.90, 0.42,
+ 0.61, 0.74, 0.41, 0.44, 1.08, 1.06, 1.18, 0.89, 0.74,
+ 0.74, -0.06, 0.00, 0.99, 0.03, 1.00, -0.04, 0.24, 0.65,
+ 0.12, 0.13, -0.09, -0.05, 1.03, 1.07, -0.02, 1.18, 0.19,
+ 0.03, -0.03, 0.86, 1.12, 0.38, 0.72, -0.20, -0.08, -0.18,
+ 0.32, 0.13, -0.19, 0.93, 0.81, 0.31, 1.09, -0.03, 1.01,
+ -0.17, 0.84, -0.11, 0.45, 0.18, 0.23, 0.81, 0.39, 1.09,
+ -0.05, 0.58, 0.53, 0.96, 0.43, 0.48, 0.96, -0.03, 1.13,
+ 1.16, 0.16, 1.15, 0.57, 0.13, 0.71, 0.35, 1.04, 0.62,
+ 1.03, 0.98, 0.31, 0.70, 0.97, 0.87, 1.14, 0.08, 1.19,
+ 0.88, 1.00, 0.51, 0.03, 0.17, 1.01, 0.44, 0.17, -0.11/
C
dimension iwork(IDIM)
real xc, yc
integer ierr
integer appid,wid,gkswid
integer srlist, grlist
integer i,len_dims(2)
character*7 wks_type
C
C Default is to display output to an NCGM workstation.
C
wks_type = "ncgm"
C
C Initialize the high level utility library
C
call NhlFInitialize
C
C Create an application context. Set the app dir to the current directory
C so the application looks for a resource file in the working directory.
C
call NhlFRLCreate(srlist,'setrl')
call NhlFRLCreate(grlist,'getrl')
call NhlFRLClear(srlist)
call NhlFRLSetString(srlist,'appDefaultParent','True',ierr)
call NhlFRLSetString(srlist,'appUsrDir','./',ierr)
call NhlFCreate(appid,'nm03',NhlFAppClass,0,srlist,ierr)
if (wks_type.eq."ncgm".or.wks_type.eq."NCGM") then
C
C Create an NCGM workstation.
C
call NhlFRLClear(srlist)
call NhlFRLSetString(srlist,'wkMetaName','./nm03f.ncgm',ierr)
call NhlFCreate(wid,'nm03Work',
+ 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 NhlFRLSetString(srlist,'wkPause','True',ierr)
call NhlFCreate(wid,'nm03Work',
+ 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 NhlFRLSetString(srlist,'wkPSFileName','./nm03f.ps',ierr)
call NhlFCreate(wid,'nm03Work',
+ 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 NhlFRLSetString(srlist,'wkPDFFileName','./nm03f.pdf',ierr)
call NhlFCreate(wid,'nm03Work',
+ 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 NhlFRLSetString(srlist,'wkFileName','./nm03f',ierr)
call NhlFRLSetString(srlist,'wkFormat',wks_type,ierr)
call NhlFCreate(wid,'nm03Work',
+ 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 NhlFRLSetString(srlist,'wkFileName','./nm03f',ierr)
call NhlFRLSetString(srlist,'wkFormat',wks_type,ierr)
call NhlFCreate(wid,'nm03Work',
+ NhlFCairoImageWorkstationClass,0,srlist,ierr)
endif
C
C Define the function values.
C
do 5 i=1,NumIn
z(i) = (x(i)-0.25)**2 + (y(i)-0.50)**2
5 continue
C
C Define the output grid.
C
xmin = 0.
xmax = 1.
xc = (xmax-xmin)/(NumXOut-1.)
do 20 i=1,NumXOut
xo(i) = xmin+real(i-1) * xc
20 continue
ymin = 0.
ymax = 1.
yc = (ymax-ymin)/(NumYOut-1.)
do 30 i=1,NumYOut
yo(i) = ymin+real(i-1) * yc
30 continue
call nnseti('SDI - compute slopes and aspects',1)
call nnseti('IGR - use gradient estimates',1)
call nnseti('RAD - return results in radians',1)
call natgrids(NumIn, x, y, z, NumXOut, NumYOut, xo, yo, zo, ierr)
C
C Get Workstation ID.
C
call NhlFRLClear(grlist)
call NhlFRLGetInteger(grlist,'wkGksWorkId',gkswid,ierr)
call NhlFGetValues(wid,grlist,ierr)
C
C There's no HLU object for surface plots yet, so we need to call the
C LLUs to get a surface plot.
C
call gacwk (gkswid)
call drwsrf(gkswid,NumXOut,NumYOut,xo,yo,zo,10.,-25.,50.,iwork)
call gdawk (gkswid)
C
C Get the aspects.
C
do 60 j=1,NumYOut
do 65 i=1,NumXOut
call nngetaspects(i,j,rtmp(i,j),ierr)
65 continue
60 continue
do 100 i=1,NumXOut
do 101 j=1,NumYOut
u(i,j) = sin(rtmp(i,j))
v(i,j) = cos(rtmp(i,j))
101 continue
100 continue
C
C Create a VectorField object; then use its id as the value of
C the 'vcVectorFieldData' resource when creating the VectorPlot object.
C
len_dims(1) = NumXOut
len_dims(2) = NumYOut
call NhlFRLClear(srlist)
call NhlFRLSetMDFloatArray(srlist,'vfUDataArray',u,2,len_dims,
+ ierr)
call NhlFRLSetMDFloatArray(srlist,'vfVDataArray',v,2,len_dims,
+ ierr)
call NhlFCreate(vfid,'vectorfield',NhlFVectorFieldClass,appid,
+ srlist,ierr)
call NhlFRLClear(srlist)
call NhlFRLSetInteger(srlist,'vcVectorFieldData',vfid,ierr)
call NhlFCreate(vcid,'VectorPlot',NhlFVectorPlotClass,wid,srlist,
+ ierr)
call NhlFDraw(vcid,ierr)
call NhlFFrame(wid,ierr)
C
C Get the slopes; convert to degrees.
C
do 70 i=1,NumXOut
do 75 j=1,NumYOut
call nngetslopes(i,j,rtmp(i,j),ierr)
rtmp(i,j) = RAD2DEG*rtmp(i,j)
75 continue
70 continue
C
C Create a ScalarField data object using the data set defined above.
C
len_dims(1) = NumXOut
len_dims(2) = NumYOut
call NhlFRLClear(srlist)
call NhlFRLSetMDFloatArray(srlist,'sfDataArray',rtmp,2,len_dims,
+ ierr)
call NhlFCreate(dataid,'data',NhlFScalarFieldClass,appid,srlist,
+ ierr)
call NhlFRLClear(srlist)
call NhlFRLSetInteger(srlist,'cnScalarFieldData',dataid,ierr)
call NhlFCreate(cnid,'ContourPlot',NhlFContourPlotClass,wid,
+ srlist,ierr)
call NhlFDraw(cnid,ierr)
call NhlFFrame(wid,ierr)
C
C NhlDestroy destroys the given id and all of its children.
C
call NhlFDestroy(wid,ierr)
C
C Restores state.
C
call NhlFClose
stop
end
subroutine drwsrf(wkid,nx,ny,x,y,z,s1,s2,s3,iwk)
C
C Procedure DRWSRF uses the NCAR Graphics function SRFACE to
C draw a surface plot of the data values in Z.
C
C The point of observation is calculated from the 3D coordinate
C (S1, S2, S3); the point looked at is the center of the surface.
C
C NX - Dimension of the X-axis variable X.
C NY - Dimension of the Y-axis variable Y.
C X - An array of X-axis values.
C Y - An array of Y-axis values.
C Z - An array dimensioned for NX x NY containing data
C values for each (X,Y) coordinate.
C S1 - X value for the eye position.
C S2 - Y value for the eye position.
C S3 - Z value for the eye position.
C IWK - Work space dimensioned for at least 2*NX*NY.
C
C
dimension x(nx),y(ny),z(nx,ny),iwk(*)
integer wkid
dimension S(6)
c
c Find the extreme values.
c
xmn = x(1)
xmx = x(1)
ymn = y(1)
ymx = y(1)
zmn = z(1,1)
zmx = z(1,1)
do 10 i=2,nx
xmn = min(xmn,x(i))
xmx = max(xmx,x(i))
10 continue
do 11 i=1,ny
ymn = min(ymn,y(i))
ymx = max(ymx,y(i))
11 continue
do 12 i=1,nx
do 13 j=1,ny
zmn = min(zmn,z(i,j))
zmx = max(zmx,z(i,j))
13 continue
12 continue
if (s1.eq.0. .and. s2.eq.0. .and. s3.eq.0.) then
st1 = -3.
st2 = -1.5
st3 = 0.75
else
st1 = s1
st2 = s2
st3 = s3
endif
s(1) = 5.*st1*(xmx-xmn)
s(2) = 5.*st2*(ymx-ymn)
s(3) = 5.*st3*(zmx-zmn)
s(4) = 0.5*(xmx-xmn)
s(5) = 0.5*(ymx-ymn)
s(6) = 0.5*(zmx-zmn)
C
C Set foreground/background colors
C
call gscr(wkid, 0, 1.00, 1.00, 1.00)
call gscr(wkid, 1, 0.00, 0.00, 0.00)
call gscr(wkid, 2, 0.00, 1.00, 1.00)
call gscr(wkid, 3, 0.00, 1.00, 0.00)
call gscr(wkid, 4, 0.70, 1.00, 0.00)
call gscr(wkid, 5, 1.00, 1.00, 0.00)
call gscr(wkid, 6, 1.00, 0.75, 0.00)
call gscr(wkid, 7, 1.00, 0.50, 0.50)
call gscr(wkid, 8, 1.00, 0.00, 0.00)
call srface (x,y,z,iwk,nx,nx,ny,s,0.)
return
end
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