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C --- -----------------------------------------------------------------
C --- T e X P I C
C --- -----------------------------------------------------------------
C
C --- These routines are used to generate an input file to TeX which,
C --- when processed, gives a halftone representation of the grey-level
C --- image. TEXPIC is the main picture-plotting routine: it requires a
C --- M x N pixel array ARRAY. The TeX commands are written to the file
C --- FN. These routines are taken from a general-purpose library of
C --- image processing software developed by the author, which explains
C --- why most of the variables in the COMMON blocks are not used. The
C --- Fortran is also machine-generated, which may account for some odd
C --- line breaks in the code. (No line, even in comments, has more
C --- than 72 characters in it.)
C
C --- The image representation used here conforms to the one adopted by
C --- the Numerical Algorithms Group (NAG) for their ``Image Processing
C --- Algorithm Library'' IPAL, although the coding does not (it does
C --- not allow a sub-region to be plotted).
C
C --- There are two versions of TEXPIC in this file: the first is VAX-
C --- specific, while the second should be fairly portable. Note that
C --- both routines declare the BLOCK DATA module ALGINI as EXTERNAL;
C --- this usually forces the linker to build it into executable files.
C
C --- TEXPIC's support routines are:
C
C --- TEXMAX set the maximum pixel width across the page
C --- ZRANGE fix the contrast for subsequent TEXPIC calls
C --- ZAUTO subsequent pictures have their contrast determined
C --- from the data
C --- ZSAME subsequent pictures are plotted with the same
C --- contrast as the previous one
C --- DOPOS subsequent pix have low pixel values plotted black
C --- DONEG subsequent pix have low pixel values plotted white
C --- MINMAX determines the range of the data
C --- ALGERR outputs error messages
C --- ABANDN VAX-specific ^C trap routine
C --- ALGINI block data module
C
C --- Details of the invocations are given in the comments associated
C --- with each routine. There is also a separate document which gives
C --- user-level documentation and examples. This is available as part
C --- of the ``VAX/VMS TeX User's Guide'', written by the author, or as
C --- a separate document.
C
C --- As supplied, TEXPIC uses a three-point contextual bilinear method
C --- to interpolate between pixels. The results it produces should be
C --- marginally better than using standard four-point interpolation;
C --- however, the author can detect no difference. If you'd prefer to
C --- use four-point interpolation, the line to change is marked in the
C --- TEXPIC source code.
C
C --- Since you get TEXPIC free of charge, there is no formal guarantee
C --- given by Essex University OR the author that the software works
C --- or that the documentation agrees with the code. Nevertheless, the
C --- author would be pleased to hear of any problems.
C
C --- TEXPIC and associated routines were written by:
C
C --- Dr. Adrian F. Clark (``Alien'')
C --- of Department of Electronic Systems Engineering
C --- University of Essex
C --- Wivenhoe Park
C --- Colchester
C --- Essex C04 3SQ
C --- United Kingdom
C --- Tel: Colchester (0206) 872432 (direct)
C --- JANET: user ALIEN @UK.AC.ESSEX.ESE
C
C --- If you write, please mark the envelope with ``TeX''.
C
C --- Acknowledgements in any published work that uses TEXPIC would be
C --- appreciated.
C
C --- ENJOY!
C
C --- -----------------------------------------------------------------
SUBROUTINE TEXPIC( ARRAY, M, N, FN )
C --- -----------------------------------------------------------------
C
C --- TEXPIC version 0.1 was written by Alien in Fortran-77.
C
C --- This routine writes out the M x N image ARRAY into the file FN
C --- in a form which is suitable for insertion into a TeX document.
C --- If FN has no filetype (``extension''), .TEX is used.
C
C --- By default, the range of the data is determined and used to
C --- maximise the contrast of the output image. This can be
C --- overridden by pre-setting the range of data values with a call
C --- to ZRANGE. ZAUTO restores the default behaviour. Similarly,
C --- TEXPIC will produce negated images on output if DONEG has
C --- previously been invoked. DOPOS sets it to produce positive
C --- pictures again.
C
C --- USAGE: CALL TEXPIC( ARRAY, M, N, FN )
C
C --- PARAMETERS
C --- ARRAY REAL image to be output to the file
C --- M INTEGER first dimension of ARRAY
C --- N INTEGER second dimension of ARRAY
C --- FN CHARACTER*(*) name of file to which ARRAY will
C --- be written
C
C --- RESTRICTIONS
C --- If N is greater than MMAX, the image will be sub-sampled in both
C --- directions to make the result MMAX x MMAX. The interpolation
C --- technique used is due to P.R. Smith (Ultramicroscopy vol 6, pp
C --- 201--204, 1981).
C
C --- COMMONS
C --- /ALG/, /ALGTEX/
C
C --- SUBPROGRAMS INVOKED
C --- MINMAX, LIB$GET_LUN, LIB$FREE_LUN
C
C --- Copyright (C) Alien 1987 -- All rights reserved.
C
IMPLICIT NONE
C
INTEGER LEVELS, MINIDX, CMAX
INTEGER GRFGRF, GRFHIS, GRFPOL
INTEGER MAXICH, MAXRCH
INTEGER MINLUN, MAXLUN
INTEGER MAXOUT, MAXARR, MAXAFT, MAXCH
INTEGER MAXSTV, NOUSEM
REAL PI
C
PARAMETER( GRFGRF=0, GRFHIS=1, GRFPOL=2 )
PARAMETER( MAXICH=11, MAXRCH=11 )
PARAMETER( MINLUN=1, MAXLUN=99 )
PARAMETER( MAXOUT=133, MAXARR=512, MAXAFT=(9*MAXARR)/4+1 )
PARAMETER( MAXCH=16 )
PARAMETER( MAXSTV=3, NOUSEM=-1 )
PARAMETER( PI=3.1415926535897932384626433 )
PARAMETER( LEVELS=65, MINIDX=48, CMAX=132 )
C
CHARACTER*(*) FN
INTEGER M, N
REAL ARRAY(M,N)
C
CHARACTER*(CMAX) C
CHARACTER*6 RUTNAM
INTEGER NMAX, I, J, IC, IV, LUN, IOS, ILO, JLO, IHI, JHI
INTEGER LIB$GET_LUN, LIB$FREE_LUN
LOGICAL POS
REAL RANGE, INC
REAL X, Y, DX, DY, DX1, DY1, VAL
C
INTEGER*2 CHAN
LOGICAL ABFLAG
INTEGER GLUN, PLUN, ELUN, POLHIS
LOGICAL XFIX, YFIX, ZFIX, RFIX, TFIX, LOGX, LOGY, LOGZ, LOGR
LOGICAL VRBOSE, NEG, MIDORG, FTNRML
REAL XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX, RMIN, RMAX, TMIN, TMAX,
& FTFWD, FTREV
REAL TOL
INTEGER MMAX
C
COMMON /ALG_ABANDN/ ABFLAG, CHAN
SAVE /ALG_ABANDN/
COMMON /ALG/ XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX, RMIN, RMAX,
& TMIN, TMAX, TOL, FTFWD, FTREV, XFIX, YFIX, ZFIX, RFIX, TFIX,
& LOGX, LOGY, LOGZ, LOGR, NEG, GLUN, PLUN, ELUN, POLHIS, MIDORG,
& FTNRML, VRBOSE
SAVE /ALG/
COMMON/ALGTEX/ MMAX
SAVE /ALGTEX/
EXTERNAL ALGINI
DATA RUTNAM/'TEXPIC'/
C
C --- Find the range of the data if we're in auto mode; otherwise,
C --- use the specified ranges.
C
IF( .NOT. ZFIX ) THEN
CALL MINMAX( ARRAY, M, N, ZMIN, ZMAX )
IF( ZMIN .EQ. ZMAX ) ZMAX = ZMIN + 1
END IF
C
C --- We can't print more than MMAX columns across the TeX output.
C --- If the user passes an array bigger than this, we'll interpolate
C --- it down to MMAX.
C
IF( M .GT. MMAX ) THEN
INC = FLOAT(M) / FLOAT(MMAX)
NMAX = NINT( FLOAT(N) / INC )
ELSE
INC = 0
END IF
C
C --- Get a free channel number and open the output file.
C
IOS = LIB$GET_LUN( LUN )
IF( .NOT. IOS ) CALL EXIT( IOS )
C
OPEN( UNIT=LUN, FILE=FN, STATUS='NEW', RECL=CMAX+1, IOSTAT=IOS,
& DEFAULTFILE='.TEX', CARRIAGECONTROL='LIST' )
IF( IOS .EQ. 0 ) THEN
C
C --- Calculate the scaling factor.
C
POS = .NOT. NEG
RANGE = FLOAT(LEVELS-1) / (ZMAX-ZMIN)
C
C --- Output the introduction.
C
WRITE( LUN, 100 )
C
C --- Output the image without interpolation if INC is zero.
C
IF( ABS(INC) .LT. TOL ) THEN
DO 2 J = 1, N
IF( ABFLAG ) GO TO 5
IC = 1
C(1:1) = ','
DO 1 I = 1, M
VAL = ARRAY(I,J)
IF( VAL .LT. ZMIN ) VAL = ZMIN
IF( VAL .GT. ZMAX ) VAL = ZMAX
IV = NINT((VAL-ZMIN) * RANGE)
IF( POS ) IV = (LEVELS-1) - IV
IC = IC + 1
C(IC:IC) = CHAR( IV + MINIDX )
IF( IC .GE. CMAX-1 ) THEN
WRITE( LUN, 200 ) C(1:IC)
IC = 1
C(1:1) = ' '
END IF
1 CONTINUE
IF( IC .GT. 0 ) WRITE(LUN, 300) C(1:IC)
2 CONTINUE
ELSE
C
C --- Interpolate the output.
C
Y = 1
DO 4 J = 1, NMAX
IF( ABFLAG ) GO TO 5
DY = Y - INT(Y)
DY1 = 1 - DY
JLO = MOD( INT(Y-1), N ) + 1
JHI = MOD( JLO, N ) + 1
X = 1
IC = 1
C(1:1) = ','
DO 3 I = 1, MMAX
DX = X - INT(X)
DX1 = 1 - DX
ILO = MOD( INT(X)-1, M ) + 1
IHI = MOD( ILO, M ) + 1
C
C --- Smith's three-point contextual bilinear interpolation.
C
IF( ABS(ARRAY(ILO,JLO)-ARRAY(IHI,JHI)) .GT.
& ABS(ARRAY(IHI,JLO)-ARRAY(ILO,JHI)) ) THEN
VAL = (DX-DY)*ARRAY(IHI,JLO) + DX1*ARRAY(ILO,JLO) +
& DY*ARRAY(IHI,JHI)
ELSE
VAL = (DX1-DY)*ARRAY(ILO,JLO) + DX*ARRAY(IHI,JLO) +
& DY*ARRAY(ILO,JHI)
END IF
X = X + INC
IF( VAL .LT. ZMIN ) VAL = ZMIN
IF( VAL .GT. ZMAX ) VAL = ZMAX
IV = NINT((VAL-ZMIN) * RANGE)
IF( POS ) IV = (LEVELS-1) - IV
IC = IC + 1
C(IC:IC) = CHAR( IV + MINIDX )
IF( IC .GE. CMAX-1 ) THEN
WRITE( LUN, 200 ) C(1:IC)
IC = 1
C(1:1) = ' '
END IF
3 CONTINUE
IF( IC .GT. 0 ) WRITE(LUN, 300) C(1:IC)
C
Y = Y + INC
4 CONTINUE
END IF
C
C --- Close off the file.
C
5 CONTINUE
WRITE( LUN, 400 )
CLOSE( UNIT=LUN )
ELSE
CALL ALGERR( RUTNAM, 'Cannot open specified output file:',
& FN )
END IF
C
C --- Release the channel.
C
IOS = LIB$FREE_LUN( LUN )
IF( .NOT. IOS ) CALL EXIT( IOS )
C
RETURN
100 FORMAT(' \hbox{\vbox{\halftone\offinterlineskip ',
& '% machine-generated by TEXPIC.'/
& ' \def\BHT{\hbox\bgroup\ignorespaces}'/
& ' \catcode`\^=12 \catcode`\_=12 \catcode`\.=\active',
& ' \let.=\egroup'/ ' \catcode`\,=\active \let,=\BHT',
& ' \catcode`\/=0 \catcode`\\=12')
200 FORMAT(1X,A,'%')
300 FORMAT(1X,A,'.')
400 FORMAT(' }}%')
END
C --- -----------------------------------------------------------------
SUBROUTINE TEXPIC( ARRAY, M, N, FN )
C --- -----------------------------------------------------------------
C
C --- TEXPIC version 0.1 was written by Alien in Fortran-77.
C
C --- This routine writes out the M x N image ARRAY into the file FN
C --- in a form which is suitable for insertion into a TeX document.
C
C --- By default, the range of the data is determined and used to
C --- maximise the contrast of the output image. This can be
C --- overridden by pre-setting the range of data values with a call
C --- to ZRANGE. ZAUTO restores the default behaviour. Similarly,
C --- TEXPIC will produce negated images on output if DONEG has
C --- previously been invoked. DOPOS sets it to produce positive
C --- pictures again.
C
C --- USAGE: CALL TEXPIC( ARRAY, M, N, FN )
C
C --- PARAMETERS
C --- ARRAY REAL image to be output to the file
C --- M INTEGER first dimension of ARRAY
C --- N INTEGER second dimension of ARRAY
C --- FN CHARACTER*(*) name of file to which ARRAY will
C --- be written
C
C --- RESTRICTIONS
C --- If N is greater than MMAX, the image will be sub-sampled in both
C --- directions to make the result MMAX x MMAX. The interpolation
C --- technique used is due to P.R. Smith (Ultramicroscopy vol 6, pp
C --- 201--204, 1981).
C
C --- COMMONS
C --- /ALG/, /ALGTEX/
C
C --- SUBPROGRAMS INVOKED
C --- MINMAX
C
C --- Copyright (C) Alien 1987 -- All rights reserved.
C
IMPLICIT CHARACTER*1 (A-Z)
C
INTEGER LEVELS, MINIDX, CMAX
INTEGER GRFGRF, GRFHIS, GRFPOL
INTEGER MAXICH, MAXRCH
INTEGER MINLUN, MAXLUN
INTEGER MAXOUT, MAXARR, MAXAFT, MAXCH
INTEGER MAXSTV, NOUSEM
REAL PI
C
PARAMETER( GRFGRF=0, GRFHIS=1, GRFPOL=2 )
PARAMETER( MAXICH=11, MAXRCH=11 )
PARAMETER( MINLUN=1, MAXLUN=99 )
PARAMETER( MAXOUT=133, MAXARR=512, MAXAFT=(9*MAXARR)/4+1 )
PARAMETER( MAXCH=16 )
PARAMETER( MAXSTV=3, NOUSEM=-1 )
PARAMETER( PI=3.1415926535897932384626433 )
PARAMETER( LEVELS=65, MINIDX=48, CMAX=132 )
C
CHARACTER*(*) FN
INTEGER M, N
REAL ARRAY(M,N)
C
CHARACTER*(CMAX) C
CHARACTER*6 RUTNAM
INTEGER NMAX, I, J, IC, IV, LUN, IOS, ILO, JLO, IHI, JHI
LOGICAL POS
REAL RANGE, INC
REAL X, Y, DX, DY, DX1, DY1, VAL
C
LOGICAL ABANDN
INTEGER GLUN, PLUN, ELUN, POLHIS
LOGICAL XFIX, YFIX, ZFIX, RFIX, TFIX, LOGX, LOGY, LOGZ, LOGR
LOGICAL VRBOSE, NEG, MIDORG, FTNRML
REAL XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX, RMIN, RMAX, TMIN, TMAX,
& FTFWD, FTREV
REAL TOL
INTEGER MMAX
C
COMMON /ALG/ XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX, RMIN, RMAX,
& TMIN, TMAX, TOL, FTFWD, FTREV, XFIX, YFIX, ZFIX, RFIX, TFIX,
& LOGX, LOGY, LOGZ, LOGR, NEG, GLUN, PLUN, ELUN, POLHIS, MIDORG,
& FTNRML, VRBOSE
SAVE /ALG/
COMMON/ALGTEX/ MMAX
SAVE /ALGTEX/
EXTERNAL ALGINI
DATA RUTNAM/'TEXPIC'/
C
C --- Find the range of the data if we're in auto mode; otherwise,
C --- use the specified ranges.
C
IF( .NOT. ZFIX ) THEN
CALL MINMAX( ARRAY, M, N, ZMIN, ZMAX )
IF( ZMIN .EQ. ZMAX ) ZMAX = ZMIN + 1
END IF
C
C --- We can't print more than MMAX columns across the TeX output.
C --- If the user passes an array bigger than this, we'll interpolate
C --- it down to MMAX.
C
IF( M .GT. MMAX ) THEN
INC = FLOAT(M) / FLOAT(MMAX)
NMAX = NINT( FLOAT(N) / INC )
ELSE
INC = 0
END IF
C
C --- We always open the output file on channel 7 (fix me!).
C
LUN = 7
OPEN( UNIT=LUN, FILE=FN, STATUS='NEW', RECL=CMAX+1, IOSTAT=IOS )
IF( IOS .EQ. 0 ) THEN
C
C --- Calculate the scaling factor.
C
POS = .NOT. NEG
RANGE = FLOAT(LEVELS-1) / (ZMAX-ZMIN)
C
C --- Output the introduction.
C
WRITE( LUN, 100 )
C
C --- Output the image without interpolation if INC is zero.
C
IF( ABS(INC) .LT. TOL ) THEN
DO 2 J = 1, N
IF( ABANDN(0) ) GO TO 5
IC = 1
C(1:1) = ','
DO 1 I = 1, M
VAL = ARRAY(I,J)
IF( VAL .LT. ZMIN ) VAL = ZMIN
IF( VAL .GT. ZMAX ) VAL = ZMAX
IV = NINT((VAL-ZMIN) * RANGE)
IF( POS ) IV = (LEVELS-1) - IV
IC = IC + 1
C(IC:IC) = CHAR( IV + MINIDX )
IF( IC .GE. CMAX-1 ) THEN
WRITE( LUN, 200 ) C(1:IC)
IC = 1
C(1:1) = ' '
END IF
1 CONTINUE
IF( IC .GT. 0 ) WRITE(LUN, 300) C(1:IC)
2 CONTINUE
ELSE
C
C --- Interpolate the output.
C
Y = 1
DO 4 J = 1, NMAX
IF( ABANDN(0) ) GO TO 5
DY = Y - INT(Y)
DY1 = 1 - DY
JLO = MOD( INT(Y-1), N ) + 1
JHI = MOD( JLO, N ) + 1
X = 1
IC = 1
C(1:1) = ','
DO 3 I = 1, MMAX
DX = X - INT(X)
DX1 = 1 - DX
ILO = MOD( INT(X)-1, M ) + 1
IHI = MOD( ILO, M ) + 1
C
C --- Smith's three-point contextual bilinear interpolation.
C
IF( ABS(ARRAY(ILO,JLO)-ARRAY(IHI,JHI)) .GT.
& ABS(ARRAY(IHI,JLO)-ARRAY(ILO,JHI)) ) THEN
VAL = (DX-DY)*ARRAY(IHI,JLO) + DX1*ARRAY(ILO,JLO) +
& DY*ARRAY(IHI,JHI)
ELSE
VAL = (DX1-DY)*ARRAY(ILO,JLO) + DX*ARRAY(IHI,JLO) +
& DY*ARRAY(ILO,JHI)
END IF
X = X + INC
IF( VAL .LT. ZMIN ) VAL = ZMIN
IF( VAL .GT. ZMAX ) VAL = ZMAX
IV = NINT((VAL-ZMIN) * RANGE)
IF( POS ) IV = (LEVELS-1) - IV
IC = IC + 1
C(IC:IC) = CHAR( IV + MINIDX )
IF( IC .GE. CMAX-1 ) THEN
WRITE( LUN, 200 ) C(1:IC)
IC = 1
C(1:1) = ' '
END IF
3 CONTINUE
IF( IC .GT. 0 ) WRITE(LUN, 300) C(1:IC)
C
Y = Y + INC
4 CONTINUE
END IF
C
C --- Close off the file.
C
5 CONTINUE
WRITE( LUN, 400 )
CLOSE( UNIT=LUN )
ELSE
CALL ALGERR( RUTNAM, 'Cannot open specified output file:',
& FN )
END IF
C
C
RETURN
100 FORMAT(' \hbox{\vbox{\halftone\offinterlineskip ',
& '% machine-generated by TEXPIC.'/
& ' \def\BHT{\hbox\bgroup\ignorespaces}'/
& ' \catcode`\^=12 \catcode`\_=12 \catcode`\.=\active',
& ' \let.=\egroup'/ ' \catcode`\,=\active \let,=\BHT',
& ' \catcode`\/=0 \catcode`\\=12')
200 FORMAT(1X,A,'%')
300 FORMAT(1X,A,'.')
400 FORMAT(' }}%')
END
C --- -----------------------------------------------------------------
SUBROUTINE TEXMAX( MV )
C --- -----------------------------------------------------------------
C
C --- TEXMAX version 0.0 was written by Alien in Fortran-77.
C
C --- This routine sets the maximum number of pixels across a picture
C --- which TEXPIC will output to a file. Pictures which have their
C --- first dimension greater than MMAX are interpolated down to MMAX
C --- pixels.
C
C --- USAGE: CALL TEXMAX( MMAX )
C
C --- PARAMETERS
C --- MMAX INTEGER maximum number of pixels to be plotted by
C --- TEXPIC
C
C --- RESTRICTIONS
C --- none
C
C --- COMMONS
C --- /ALGTEX/
C
C --- SUBPROGRAMS INVOKED
C --- none
C
C --- Copyright (C) Alien 1987 -- All rights reserved.
C
IMPLICIT NONE
C
INTEGER GRFGRF, GRFHIS, GRFPOL
INTEGER MAXICH, MAXRCH
INTEGER MINLUN, MAXLUN
INTEGER MAXOUT, MAXARR, MAXAFT, MAXCH
INTEGER MAXSTV, NOUSEM
REAL PI
C
PARAMETER( GRFGRF=0, GRFHIS=1, GRFPOL=2 )
PARAMETER( MAXICH=11, MAXRCH=11 )
PARAMETER( MINLUN=1, MAXLUN=99 )
PARAMETER( MAXOUT=133, MAXARR=512, MAXAFT=(9*MAXARR)/4+1 )
PARAMETER( MAXCH=16 )
PARAMETER( MAXSTV=3, NOUSEM=-1 )
PARAMETER( PI=3.1415926535897932384626433 )
C
INTEGER MV
C
CHARACTER*(MAXICH) BUF
C
INTEGER MMAX
C
COMMON/ALGTEX/ MMAX
SAVE /ALGTEX/
C
IF( MV .GE. 2 ) THEN
MMAX = MV
ELSE
WRITE( BUF, 100 ) MV
CALL ALGERR( 'TEXMAX',
& 'Too few pixels selected across page:'//BUF,
& 'You must have two or more pixels across the page' )
END IF
C
RETURN
100 FORMAT(I11)
END
C --- ------------------------------------------------------------------
SUBROUTINE ZRANGE( ZVMIN, ZVMAX )
C --- ------------------------------------------------------------------
C
C --- ZRANGE version 0.0 was written by Alien in Fortran-77.
C
C --- This routine fixes the range of the Z-axis for subsequent
C --- graphical plots.
C
C --- USAGE: CALL ZRANGE( ZMIN, ZMAX )
C
C --- PARAMETERS
C --- ZMIN REAL minimum value to appear on the Z-axis
C --- ZMAX REAL maximum value to appear on the Z-axis
C
C --- RESTRICTIONS
C --- ZMIN must be smaller than ZMAX.
C --- Note that the range of values actually produced on graphs may be
C --- slightly greater than those specified.
C
C --- SUBPROGRAMS INVOKED
C --- ALGERR
C
C --- COMMONS
C --- ZFIX, ZMIN, ZMAX in /ALG/
C
C --- Copyright (C) Alien 1987 -- All rights reserved.
C
IMPLICIT NONE
C
INTEGER GRFGRF, GRFHIS, GRFPOL
INTEGER MAXICH, MAXRCH
INTEGER MINLUN, MAXLUN
INTEGER MAXOUT, MAXARR, MAXAFT, MAXCH
INTEGER MAXSTV, NOUSEM
REAL PI
C
PARAMETER( GRFGRF=0, GRFHIS=1, GRFPOL=2 )
PARAMETER( MAXICH=11, MAXRCH=11 )
PARAMETER( MINLUN=1, MAXLUN=99 )
PARAMETER( MAXOUT=133, MAXARR=512, MAXAFT=(9*MAXARR)/4+1 )
PARAMETER( MAXCH=16 )
PARAMETER( MAXSTV=3, NOUSEM=-1 )
PARAMETER( PI=3.1415926535897932384626433 )
C
REAL ZVMIN, ZVMAX
C
INTEGER GLUN, PLUN, ELUN, POLHIS
LOGICAL XFIX, YFIX, ZFIX, RFIX, TFIX, LOGX, LOGY, LOGZ, LOGR
LOGICAL VRBOSE, NEG, MIDORG, FTNRML
REAL XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX, RMIN, RMAX, TMIN, TMAX,
& FTFWD, FTREV
REAL TOL
C
COMMON /ALG/ XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX, RMIN, RMAX,
& TMIN, TMAX, TOL, FTFWD, FTREV, XFIX, YFIX, ZFIX, RFIX, TFIX,
& LOGX, LOGY, LOGZ, LOGR, NEG, GLUN, PLUN, ELUN, POLHIS, MIDORG,
& FTNRML, VRBOSE
SAVE /ALG/
C
IF( ZVMIN .LT. ZVMAX ) THEN
ZMIN = ZVMIN
ZMAX = ZVMAX
ZFIX = .TRUE.
ELSE
CALL ALGERR('ZRANGE','Zmin was not smaller than Zmax.',' ')
END IF
C
RETURN
END
C --- ------------------------------------------------------------------
SUBROUTINE ZAUTO
C --- ------------------------------------------------------------------
C
C --- ZAUTO version 0.0 was written by Alien in Fortran-77.
C
C --- This routine causes the Z-axis of subsequent graphical plots
C --- to be scaled according to the data being plotted.
C
C --- USAGE: CALL ZAUTO
C
C --- PARAMETERS
C --- none
C
C --- RESTRICTIONS
C --- none
C
C --- SUBPROGRAMS INVOKED
C --- none
C
C --- COMMONS
C --- ZFIX in /ALG/
C
C --- Copyright (C) Alien 1987 -- All rights reserved.
C
IMPLICIT NONE
C
INTEGER GLUN, PLUN, ELUN, POLHIS
LOGICAL XFIX, YFIX, ZFIX, RFIX, TFIX, LOGX, LOGY, LOGZ, LOGR
LOGICAL VRBOSE, NEG, MIDORG, FTNRML
REAL XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX, RMIN, RMAX, TMIN, TMAX,
& FTFWD, FTREV
REAL TOL
C
COMMON /ALG/ XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX, RMIN, RMAX,
& TMIN, TMAX, TOL, FTFWD, FTREV, XFIX, YFIX, ZFIX, RFIX, TFIX,
& LOGX, LOGY, LOGZ, LOGR, NEG, GLUN, PLUN, ELUN, POLHIS, MIDORG,
& FTNRML, VRBOSE
SAVE /ALG/
C
ZFIX = .FALSE.
C
RETURN
END
C --- ------------------------------------------------------------------
SUBROUTINE ZSAME
C --- ------------------------------------------------------------------
C --- ZSAME version 0.0
C
C --- Written by Alien in Fortran-77.
C
C --- This routine causes the range of the Z-axis on subsequent
C --- graphical plots to be the same as those used on the previous
C --- invocation.
C
C --- USAGE: CALL ZSAME
C
C --- PARAMETERS
C --- none
C
C --- RESTRICTIONS
C --- none
C
C --- SUBPROGRAMS INVOKED
C --- |ALGERR|
C
C --- COMMONS
C --- |ZFIX|, |ZMIN|, |ZMAX| in |/ALG/|
C
C --- Copyright (C) Alien 1987 -- All rights reserved.
C
IMPLICIT NONE
C
INTEGER GRFGRF, GRFHIS, GRFPOL
INTEGER MAXICH, MAXRCH
INTEGER MINLUN, MAXLUN
INTEGER MAXOUT, MAXARR, MAXAFT, MAXCH
INTEGER MAXSTV, NOUSEM
REAL PI
C
PARAMETER( GRFGRF=0, GRFHIS=1, GRFPOL=2 )
PARAMETER( MAXICH=11, MAXRCH=11 )
PARAMETER( MINLUN=1, MAXLUN=99 )
PARAMETER( MAXOUT=133, MAXARR=512, MAXAFT=(9*MAXARR)/4+1 )
PARAMETER( MAXCH=16 )
PARAMETER( MAXSTV=3, NOUSEM=-1 )
PARAMETER( PI=3.1415926535897932384626433 )
C
INTEGER GLUN, PLUN, ELUN, POLHIS
LOGICAL XFIX, YFIX, ZFIX, RFIX, TFIX, LOGX, LOGY, LOGZ, LOGR
LOGICAL VRBOSE, NEG, MIDORG, FTNRML
REAL XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX, RMIN, RMAX, TMIN, TMAX,
& FTFWD, FTREV
REAL TOL
C
COMMON /ALG/ XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX, RMIN, RMAX,
& TMIN, TMAX, TOL, FTFWD, FTREV, XFIX, YFIX, ZFIX, RFIX, TFIX,
& LOGX, LOGY, LOGZ, LOGR, NEG, GLUN, PLUN, ELUN, POLHIS, MIDORG,
& FTNRML, VRBOSE
SAVE /ALG/
C
IF( ZMIN .LT. ZMAX ) THEN
ZFIX = .TRUE.
ELSE
CALL ALGERR('ZSAME','Zmin was not smaller than Zmax.',
& 'Call ignored.' )
END IF
C
RETURN
END
C --- -----------------------------------------------------------------
SUBROUTINE DONEG
C --- -----------------------------------------------------------------
C
C --- DONEG version 0.0 was written by Alien in Fortran-77.
C
C --- This routine causes subsequent grey-level pictures to be drawn
C --- with negative contrast.
C
C --- USAGE: CALL DONEG
C
C --- PARAMETERS
C --- none
C
C --- RESTRICTIONS
C --- none
C
C --- SUBPROGRAMS INVOKED
C --- none
C
C --- COMMONS
C --- NEG in /ALG/
C
C --- Copyright (C) Alien 1987 -- All rights reserved.
C
IMPLICIT NONE
C
INTEGER GRFGRF, GRFHIS, GRFPOL
INTEGER MAXICH, MAXRCH
INTEGER MINLUN, MAXLUN
INTEGER MAXOUT, MAXARR, MAXAFT, MAXCH
INTEGER MAXSTV, NOUSEM
REAL PI
C
PARAMETER( GRFGRF=0, GRFHIS=1, GRFPOL=2 )
PARAMETER( MAXICH=11, MAXRCH=11 )
PARAMETER( MINLUN=1, MAXLUN=99 )
PARAMETER( MAXOUT=133, MAXARR=512, MAXAFT=(9*MAXARR)/4+1 )
PARAMETER( MAXCH=16 )
PARAMETER( MAXSTV=3, NOUSEM=-1 )
PARAMETER( PI=3.1415926535897932384626433 )
INTEGER GLUN, PLUN, ELUN, POLHIS
LOGICAL XFIX, YFIX, ZFIX, RFIX, TFIX, LOGX, LOGY, LOGZ, LOGR
LOGICAL VRBOSE, NEG, MIDORG, FTNRML
REAL XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX, RMIN, RMAX, TMIN, TMAX,
& FTFWD, FTREV
REAL TOL
C
COMMON /ALG/ XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX, RMIN, RMAX,
& TMIN, TMAX, TOL, FTFWD, FTREV, XFIX, YFIX, ZFIX, RFIX, TFIX,
& LOGX, LOGY, LOGZ, LOGR, NEG, GLUN, PLUN, ELUN, POLHIS, MIDORG,
& FTNRML, VRBOSE
SAVE /ALG/
C
C
NEG = .TRUE.
C
RETURN
END
C --- -----------------------------------------------------------------
SUBROUTINE DOPOS
C --- -----------------------------------------------------------------
C
C --- DOPOS version 0.0 was written by Alien in Fortran-77.
C
C --- This routine causes subsequent grey-level pictures to be drawn
C --- with negative contrast.
C
C --- USAGE: CALL DOPOS
C
C --- PARAMETERS
C --- none
C
C --- RESTRICTIONS
C --- none
C
C --- SUBPROGRAMS INVOKED
C --- none
C
C --- COMMONS
C --- NEG in /ALG/
C
C --- Copyright (C) Alien 1987 -- All rights reserved.
C
IMPLICIT NONE
C
INTEGER GRFGRF, GRFHIS, GRFPOL
INTEGER MAXICH, MAXRCH
INTEGER MINLUN, MAXLUN
INTEGER MAXOUT, MAXARR, MAXAFT, MAXCH
INTEGER MAXSTV, NOUSEM
REAL PI
C
PARAMETER( GRFGRF=0, GRFHIS=1, GRFPOL=2 )
PARAMETER( MAXICH=11, MAXRCH=11 )
PARAMETER( MINLUN=1, MAXLUN=99 )
PARAMETER( MAXOUT=133, MAXARR=512, MAXAFT=(9*MAXARR)/4+1 )
PARAMETER( MAXCH=16 )
PARAMETER( MAXSTV=3, NOUSEM=-1 )
PARAMETER( PI=3.1415926535897932384626433 )
INTEGER GLUN, PLUN, ELUN, POLHIS
LOGICAL XFIX, YFIX, ZFIX, RFIX, TFIX, LOGX, LOGY, LOGZ, LOGR
LOGICAL VRBOSE, NEG, MIDORG, FTNRML
REAL XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX, RMIN, RMAX, TMIN, TMAX,
& FTFWD, FTREV
REAL TOL
C
COMMON /ALG/ XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX, RMIN, RMAX,
& TMIN, TMAX, TOL, FTFWD, FTREV, XFIX, YFIX, ZFIX, RFIX, TFIX,
& LOGX, LOGY, LOGZ, LOGR, NEG, GLUN, PLUN, ELUN, POLHIS, MIDORG,
& FTNRML, VRBOSE
SAVE /ALG/
C
C
NEG = .FALSE.
C
RETURN
END
C --- ------------------------------------------------------------------
SUBROUTINE MINMAX( ARRAY, M, N, LOWEST, HIEST )
C --- ------------------------------------------------------------------
C
C --- MINMAX version 0.0 was written by Alien in Fortran-77.
C
C --- This routine determines the smallest and largest values of an
C --- array. If an interrupt is detected during the estimation of the
C --- limits of the data, the currently-detected limits are returned.
C
C --- USAGE: CALL MINMAX( ARRAY, M, N, MIN, MAX )
C
C --- PARAMETERS
C --- ARRAY REAL array of which the limits are to be
C --- determined
C --- M INTEGER first dimension of ARRAY
C --- N INTEGER second dimension of ARRAY
C --- MIN REAL minimum value found in ARRAY (returned)
C --- MAX REAL maximum value found in ARRAY (returned)
C
C --- RESTRICTIONS
C --- If interrupts are to be detected, interrupt detection must have
C --- been enabled by the calling program---see ABANDN for more
C --- details.
C
C --- SUBPROGRAMS INVOKED
C --- ABANDN
C
C --- COMMONS
C --- none
C
C --- Copyright (C) Alien 1987 -- All rights reserved.
C
IMPLICIT NONE
INTEGER GRFGRF, GRFHIS, GRFPOL
INTEGER MAXICH, MAXRCH
INTEGER MINLUN, MAXLUN
INTEGER MAXOUT, MAXARR, MAXAFT, MAXCH
INTEGER MAXSTV, NOUSEM
REAL PI
C
PARAMETER( GRFGRF=0, GRFHIS=1, GRFPOL=2 )
PARAMETER( MAXICH=11, MAXRCH=11 )
PARAMETER( MINLUN=1, MAXLUN=99 )
PARAMETER( MAXOUT=133, MAXARR=512, MAXAFT=(9*MAXARR)/4+1 )
PARAMETER( MAXCH=16 )
PARAMETER( MAXSTV=3, NOUSEM=-1 )
PARAMETER( PI=3.1415926535897932384626433 )
C
INTEGER M, N
REAL ARRAY(M*N), LOWEST, HIEST
C
INTEGER I, J, JM
REAL VAL, LO, HI
INTEGER*2 CHAN
LOGICAL ABFLAG
C
COMMON /ALG_ABANDN/ ABFLAG, CHAN
SAVE /ALG_ABANDN/
EXTERNAL ALGINI
C
C --- We have declared ARRAY as a 1-D array, but will still access
C --- it via two DO-loops. This is so that ABANDN is only invoked once
C --- per "row" of ARRAY.
C
LO = ARRAY(1)
HI = LO
C
DO 1 J = 1, N
JM = (J-1) * M
IF( ABFLAG ) GO TO 2
DO 1 I = 1, M
VAL = ARRAY(I+JM)
IF( VAL .LT. LO ) LO = VAL
IF( VAL .GT. HI ) HI = VAL
1 CONTINUE
C
2 CONTINUE
LOWEST = LO
HIEST = HI
C
RETURN
END
C --- ------------------------------------------------------------------
SUBROUTINE ALGERR( NAME, MESS, EXTRA )
C --- ------------------------------------------------------------------
C
C --- ALGERR version 0.0 was written by Alien in Fortran-77.
C
C --- This routine reports errors generated by other routines. NAME is
C --- the name of the invoking routine while MESS and EXTRA form the
C --- message to be reported to the user. MESS is the text of the
C --- message. EXTRA, if non-blank, contains extra information about
C --- the error; leading and trailing blanks are removed from EXTRA
C --- before it is output. The current version of this routine simply
C --- outputs the message text on the error output channel -- future
C --- versions will be more sophisticated.
C
C --- USAGE: CALL ALGERR( NAME, MESS, EXTRA )
C
C --- PARAMETERS
C --- NAME CHARACTER*(*) name of the invoking routine
C --- MESS CHARACTER*(*) message to be output
C --- EXTRA CHARACTER*(*) additional text for the message
C
C --- RESTRICTIONS
C --- The total length of the message must be less than the output
C --- line length (usually 132 characters) -- this means that the
C --- lengths of NAME and MESS, when added together, must come to less
C --- then 110 characters.
C
C --- SUBPROGRAMS INVOKED
C --- none
C
C --- COMMONS
C --- /ALG/
C
C --- Copyright (C) Alien 1987 -- All rights reserved.
C
IMPLICIT NONE
C
CHARACTER*1 BLANK
PARAMETER( BLANK=' ' )
C
CHARACTER*(*) NAME, MESS, EXTRA
C
INTEGER NEXTRA, FC, LC, NMESS, LM
C
INTEGER GLUN, PLUN, ELUN, POLHIS
LOGICAL XFIX, YFIX, ZFIX, RFIX, TFIX, LOGX, LOGY, LOGZ, LOGR
LOGICAL VRBOSE, NEG, MIDORG, FTNRML
REAL XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX, RMIN, RMAX, TMIN, TMAX,
& FTFWD, FTREV
REAL TOL
C
COMMON /ALG/ XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX, RMIN, RMAX,
& TMIN, TMAX, TOL, FTFWD, FTREV, XFIX, YFIX, ZFIX, RFIX, TFIX,
& LOGX, LOGY, LOGZ, LOGR, NEG, GLUN, PLUN, ELUN, POLHIS, MIDORG,
& FTNRML, VRBOSE
SAVE /ALG/
EXTERNAL ALGINI
C
NMESS = LEN( MESS )
DO 1 LM = NMESS, 1, -1
IF( MESS(LM:LM) .NE. BLANK ) GO TO 2
1 CONTINUE
LM = 1
2 CONTINUE
C
IF( EXTRA .EQ. BLANK ) THEN
WRITE( ELUN, 100 ) NAME, MESS(1:LM)
ELSE
NEXTRA = LEN( EXTRA )
DO 3 FC = 1, NEXTRA
IF( EXTRA(FC:FC) .NE. BLANK ) GO TO 4
3 CONTINUE
4 CONTINUE
DO 5 LC = NEXTRA, FC, -1
IF( EXTRA(LC:LC) .NE. BLANK ) GO TO 6
5 CONTINUE
6 CONTINUE
WRITE( ELUN, 100 ) NAME, MESS(1:LM)
WRITE( ELUN, 101 ) EXTRA(FC:LC)
END IF
C
RETURN
100 FORMAT(1X,A,': error -- ',A)
101 FORMAT(10X,A)
END
C --- ------------------------------------------------------------------
LOGICAL FUNCTION ABANDN( OP )
C --- ------------------------------------------------------------------
C
C --- ABANDN version 0.1 was written by Alien in Fortran-77.
C
C --- This LOGICAL function is used to detect whether the user has
C --- tried to interrupt execution.
C
C --- The method of specifying an interrupt varies from system to
C --- system, but is typically by typing a control character
C --- (control-C on the VAX). ABANDN is used with OP = 0 to TEST
C --- whether the user has signalled an interrupt -- the value TRUE is
C --- returned as the value of the function if this is the case.
C --- ABANDN is used with OP = 1 to SET or CLEAR the interrupt trap;
C --- this must be done by the calling program. Note that ABANDN
C --- returns the value TRUE if an error occurred while setting or
C --- clearing the interrupt trap.
C
C --- USAGE: <logical variable> = ABANDN( OP )
C
C --- PARAMETERS
C --- OP INTEGER operation 0 ==> test, 1 ==> set
C
C --- RESTRICTIONS
C --- Interrupts will not be trapped before the first invocation of
C --- ABANDN(1).
C --- After the user has signalled an interrupt, subsequent
C --- invocations of ABANDN(0) will return TRUE until ABANDN(1) is
C --- used to clear it.
C --- If the user generates interrupts very quickly (for example, by
C --- letting the ^C auto-repeat), they may be delivered so quickly
C --- that ABANDN does not manage to reset its trap in time; in this
C --- case, it will actually interrupt program execution.
C --- This version of ABANDN requires VAX/VMS 3.0 or later.
C
C --- SUBPROGRAMS INVOKED
C --- ALG_ABANDN_AST (condition handler)
C
C --- COMMONS
C --- /ALG_ABANDN/
C
C --- Copyright (C) Alien 1987 -- All rights reserved.
C
IMPLICIT NONE
C
INCLUDE '($IODEF)'
C
INTEGER ABSET, ABTEST
INTEGER GRFGRF, GRFHIS, GRFPOL
INTEGER MAXICH, MAXRCH
INTEGER MINLUN, MAXLUN
INTEGER MAXOUT, MAXARR, MAXAFT, MAXCH
INTEGER MAXSTV, NOUSEM
REAL PI
C
PARAMETER( GRFGRF=0, GRFHIS=1, GRFPOL=2 )
PARAMETER( MAXICH=11, MAXRCH=11 )
PARAMETER( MINLUN=1, MAXLUN=99 )
PARAMETER( MAXOUT=133, MAXARR=512, MAXAFT=(9*MAXARR)/4+1 )
PARAMETER( MAXCH=16 )
PARAMETER( MAXSTV=3, NOUSEM=-1 )
PARAMETER( PI=3.1415926535897932384626433 )
PARAMETER( ABSET=1, ABTEST=0 )
C
INTEGER OP
C
CHARACTER*(MAXICH) CODE
INTEGER F
INTEGER IOS, VAL, SYS$GETDVI, SYS$ASSIGN, SYS$QIOW, SYS$DASSGN
INTEGER DVIBLK(4)/ '40004'X, 0, 0, 0/
INTEGER*2 IOSB(4)
LOGICAL FIRST/.TRUE./
EXTERNAL ALG_ABANDN_AST
INTEGER*2 CHAN
LOGICAL ABFLAG
C
COMMON /ALG_ABANDN/ ABFLAG, CHAN
SAVE /ALG_ABANDN/
C
C --- Branch according to the value of OP.
C
IF( OP .EQ. ABTEST ) THEN
ABANDN = ABFLAG
ELSE IF( OP .EQ. ABSET ) THEN
ABANDN = .FALSE.
IF( FIRST ) THEN
C
C --- Check that we're using a terminal.
C
DVIBLK(2) = %LOC( VAL )
IOS = SYS$GETDVI( ,, 'TT', DVIBLK, ,,, )
IF( .NOT. IOS ) CALL EXIT( IOS )
IF( VAL .EQ. '42'X ) THEN
C
C --- If we're using a terminal, assign a channel to the device and set
C --- the trap; failure from any of the system services is taken as a
C --- fatal error. We will only return a failure code to the user if
C --- IOSB(1) indicates an error.
C
IOS = SYS$ASSIGN( 'TT', CHAN,, )
IF( .NOT. IOS ) CALL EXIT( IOS )
IOS = SYS$QIOW(, %VAL(CHAN), %VAL(IO$_SETMODE.OR.IO$M_CTR
&LCAST),
& IOSB, ,, ALG_ABANDN_AST, ,,,, )
IF( .NOT. IOS ) CALL EXIT( IOS )
IF( IOSB(1) ) THEN
FIRST = .FALSE.
ELSE
C
C --- We didn't succeed in setting the interrupt trap, heaven knows why!
C --- Set the function to return an error code, then close the channel
C --- we
C --- have so carefully opened.
C
ABANDN = .TRUE.
IOS = SYS$DASSGN( %VAL(CHAN) )
IF( .NOT. IOS ) CALL EXIT( IOS )
END IF
END IF
END IF
ABFLAG = .FALSE.
ELSE
STOP 'ABANDN: Illegal argument value.'
END IF
C
RETURN
100 FORMAT(I11)
END
C --- ------------------------------------------------------------------
SUBROUTINE ALG_ABANDN_AST
C --- ------------------------------------------------------------------
C
C --- This routine is the condition handler which is used in the
C --- implementation of ABANDN for VAX/VMS. It is called by the system
C --- when the user types ^C at his terminal; its main purpose is to set
C --- ABFLAG in common /ALG_ABANDN/, to be tested by ABANDN(ABTEST).
C --- However, because VMS ^C condition handlers are one-shot affairs,
C --- we must also re-impose the trap. This is done by invoking the
C --- simple routine ALG_ABANDN_RESET_TRAP.
C
INTEGER*2 CHAN
LOGICAL ABFLAG
C
COMMON /ALG_ABANDN/ ABFLAG, CHAN
SAVE /ALG_ABANDN/
C
C --- Set ABFLAG.
C
ABFLAG = .TRUE.
C
C --- And reset the trap.
C
CALL ALG_ABANDN_RESET_TRAP
C
RETURN
END
C --- ------------------------------------------------------------------
SUBROUTINE ALG_ABANDN_RESET_TRAP
C --- ------------------------------------------------------------------
C
C --- This routine resets the ^C trap for ALG_ABANDN_AST, because the
C --- Fortran compiler will not allow ALG_ABANDN_AST to be used in the
C --- $QIOW call inside its own code.
C
INCLUDE '($IODEF)'
INTEGER*2 IOSB(4)
INTEGER IOS, SYS$QIOW
EXTERNAL ALG_ABANDN_AST
C
INTEGER*2 CHAN
LOGICAL ABFLAG
C
COMMON /ALG_ABANDN/ ABFLAG, CHAN
SAVE /ALG_ABANDN/
C
IOS = SYS$QIOW(, %VAL(CHAN), %VAL(IO$_SETMODE.OR.IO$M_CTRLCAST),
& IOSB, ,, ALG_ABANDN_AST, ,,,, )
IF( .NOT. IOS ) CALL EXIT( IOS )
C
RETURN
END
C --- ------------------------------------------------------------------
B L O C K D A T A A L G I N I
C --- ------------------------------------------------------------------
C
C --- Copyright (C) Alien 1987 -- All rights reserved.
C
IMPLICIT NONE
C
C --- The following definitions are used to allow expressions to be
C --- typed for the initial values of variables.
C
INTEGER GRFGRF, GRFHIS, GRFPOL
INTEGER MAXICH, MAXRCH
INTEGER MINLUN, MAXLUN
INTEGER MAXOUT, MAXARR, MAXAFT, MAXCH
INTEGER MAXSTV, NOUSEM
REAL PI
INTEGER ORDRED, RNDOM, STRAIT
C
PARAMETER( GRFGRF=0, GRFHIS=1, GRFPOL=2 )
PARAMETER( MAXICH=11, MAXRCH=11 )
PARAMETER( MINLUN=1, MAXLUN=99 )
PARAMETER( MAXOUT=133, MAXARR=512, MAXAFT=(9*MAXARR)/4+1 )
PARAMETER( MAXCH=16 )
PARAMETER( MAXSTV=3, NOUSEM=-1 )
PARAMETER( PI=3.1415926535897932384626433 )
PARAMETER( ORDRED=1, RNDOM=2, STRAIT=0 )
INTEGER MOUT1, MSTAT
PARAMETER (MOUT1=MAXOUT-1, MSTAT=MAXSTV+1)
C
C --- Include all the common variables and blocks.
C
INTEGER GLUN, PLUN, ELUN, POLHIS
LOGICAL XFIX, YFIX, ZFIX, RFIX, TFIX, LOGX, LOGY, LOGZ, LOGR
LOGICAL VRBOSE, NEG, MIDORG, FTNRML
REAL XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX, RMIN, RMAX, TMIN, TMAX,
& FTFWD, FTREV
REAL TOL
INTEGER*2 CHAN
LOGICAL ABFLAG
CHARACTER*1 BLANK, VMARK, HMARK, TICK
CHARACTER*(MAXOUT) LPBUF
INTEGER LPHT, LPWID
LOGICAL FF
REAL ASPECT
LOGICAL USEM, EXACT, KNOWEM(0:MAXSTV)
REAL MINS(0:MAXSTV), MAXS(0:MAXSTV), MEANS(0:MAXSTV),
& SDS(0:MAXSTV)
INTEGER MMAX
INTEGER METHOD
C
COMMON /ALG/ XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAX, RMIN, RMAX,
& TMIN, TMAX, TOL, FTFWD, FTREV, XFIX, YFIX, ZFIX, RFIX, TFIX,
& LOGX, LOGY, LOGZ, LOGR, NEG, GLUN, PLUN, ELUN, POLHIS, MIDORG,
& FTNRML, VRBOSE
SAVE /ALG/
COMMON /ALG_ABANDN/ ABFLAG, CHAN
SAVE /ALG_ABANDN/
COMMON /LPC/ LPBUF, BLANK, VMARK, HMARK, TICK
COMMON /LPN/ ASPECT, LPHT, LPWID, FF
SAVE /LPC/, /LPN/
COMMON /STAT/ MINS, MAXS, MEANS, SDS, USEM, KNOWEM, EXACT
SAVE /STAT/
COMMON/ALGTEX/ MMAX
SAVE /ALGTEX/
COMMON /V80/ METHOD
C
C --- / A L G /
C
DATA LOGX/.FALSE./, LOGY/.FALSE./, LOGZ/.FALSE./, LOGR/.FALSE./
DATA XMIN/0.0/, XMAX/0.0/, YMIN/0.0/, YMAX/0.0/, ZMIN/0.0/,
& ZMAX/0.0/, RMIN/0.0/, RMAX/0.0/, TMIN/0.0/, TMAX/0.0/
DATA XFIX/.FALSE./, YFIX/.FALSE./, ZFIX/.FALSE./
DATA RFIX/.FALSE./, TFIX/.FALSE./
DATA VRBOSE/.FALSE./, NEG/.FALSE./
DATA MIDORG/.TRUE./, FTNRML/.FALSE./
DATA GLUN/6/, PLUN/6/, ELUN/6/, POLHIS/GRFGRF/
DATA TOL/1.0E-8/
DATA FTFWD/0.0/, FTREV/0.0/
C
C --- / A B A N D N /
C
DATA ABFLAG/.FALSE./
C
C --- / A L G T E X /
C
DATA MMAX/256/
C
C --- / L P C /
C
DATA BLANK/' '/, VMARK/'|'/, HMARK/'-'/, TICK/'+'/
C
C --- / L P N /
C
DATA FF/.TRUE./
DATA LPHT/62/, LPWID/MOUT1/
DATA ASPECT/ 0.604 /
C
C --- / S T A T /
C
DATA USEM/NOUSEM/, KNOWEM/MSTAT*.FALSE./, EXACT/.FALSE./
DATA MEANS/MSTAT*0.0/, SDS/MSTAT*0.0/
DATA MINS/MSTAT*0.0/, MAXS/MSTAT*0.0/
C
C --- / V 8 0 /
C
DATA METHOD/STRAIT/
C
END