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ezyplot.for
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C %P%
SUBROUTINE SETRNG (XSTRT, XSTOP, YSTRT, YSTOP)
********************************************************************************
* SET UNITS FOR PLOTTING
********************************************************************************
IMPLICIT DOUBLE PRECISION (A-H, O-Z)
IMPLICIT INTEGER (I-N)
CHARACTER*80 ROW(48)
CHARACTER*99 SCCSID
COMMON /ROWS/ ROW
COMMON /GRID/ X0, DX, Y0, DY, RDX, RDY, NROWS, NCOLS
C SCCSID='$Id: ezyplot.for 44197 2010-07-13 12:26:03Z bruce.tran $ 20$Date: 2007/11/20 15:22:44 $ NGS'
NCOLS = 80
NROWS = 48
IF (XSTOP .LE. XSTRT) STOP 888
IF (YSTOP .LE. YSTRT) STOP 889
X0 = XSTRT
DX = (NCOLS - 1)/(XSTOP - XSTRT)
RDX = 1.D0/DX
Y0 = YSTRT
DY = (NROWS - 1)/(YSTOP - YSTRT)
RDY = 1.D0/DY
RETURN
END
SUBROUTINE CLRPLT
********************************************************************************
* CLEAR THE PLOT
********************************************************************************
IMPLICIT DOUBLE PRECISION (A-H, O-Z)
IMPLICIT INTEGER (I-N)
CHARACTER*80 ROW(48), B80
COMMON /ROWS/ ROW
COMMON /GRID/ X0, DX, Y0, DY, RDX, RDY, NROWS, NCOLS
DATA B80 /'
& '/
DO 1 IY = 1, NROWS
ROW(IY) = B80
1 CONTINUE
RETURN
END
SUBROUTINE PUTXAX (Y, CHR)
********************************************************************************
* PLOT AN X AXIS AT Y ORDINATE
********************************************************************************
IMPLICIT DOUBLE PRECISION (A-H, O-Z)
IMPLICIT INTEGER (I-N)
CHARACTER*1 CHR
CHARACTER*80 ROW(48)
COMMON /ROWS/ ROW
COMMON /GRID/ X0, DX, Y0, DY, RDX, RDY, NROWS, NCOLS
IY = (Y - Y0)*DY + 1.4999D0
IF (IY .LT. 1) RETURN
IF (IY .GT. NROWS) RETURN
DO 1 IX = 1, NCOLS
ROW(IY)(IX:IX) = CHR
1 CONTINUE
RETURN
END
SUBROUTINE PUTYAX (X, CHR)
********************************************************************************
* PLOT A Y AXIS AT X ORDINATE
********************************************************************************
IMPLICIT DOUBLE PRECISION (A-H, O-Z)
IMPLICIT INTEGER (I-N)
CHARACTER*1 CHR
CHARACTER*80 ROW(48)
COMMON /ROWS/ ROW
COMMON /GRID/ X0, DX, Y0, DY, RDX, RDY, NROWS, NCOLS
IX = (X - X0)*DX + 1.4999D0
IF (IX .LT. 1) RETURN
IF (IX .GT. NCOLS) RETURN
DO 1 IY = 1, NROWS
ROW(IY)(IX:IX) = CHR
1 CONTINUE
RETURN
END
SUBROUTINE PUTXTK (YHOR, XST, XINC, CHR)
********************************************************************************
* PLOT TICKS ON X AXIS
* START AT XST, INCREMENT BY XINC, BOTH WAYS
********************************************************************************
IMPLICIT DOUBLE PRECISION (A-H, O-Z)
IMPLICIT INTEGER (I-N)
CHARACTER*1 CHR
CHARACTER*80 ROW(48)
COMMON /ROWS/ ROW
COMMON /GRID/ X0, DX, Y0, DY, RDX, RDY, NROWS, NCOLS
IF (XINC .LE. 0.D0) RETURN
IF ( DINT(XINC*DX) .LT. 1 ) XINC = RDX
IY = (YHOR - Y0)*DY + 1.4999D0
IF (IY .LT. 1) RETURN
IF (IY .GT. NROWS) RETURN
*** LOOP UNTIL MAX RANGE EXCEEDED
X = XST
100 IX = (X - X0)*DX + 1.4999D0
IF (IX .GE .1) THEN
IF (IX .GT. NCOLS) GO TO 199
ROW(IY)(IX:IX) = CHR
ENDIF
X = X + XINC
GO TO 100
*** LOOP UNTIL MIN RANGE EXCEEDED
199 X = XST
200 IX = (X - X0)*DX + 1.4999D0
IF (IX .LE. NCOLS) THEN
IF (IX .LT. 1) GO TO 300
ROW(IY)(IX:IX) = CHR
ENDIF
X = X - XINC
GO TO 200
300 RETURN
END
SUBROUTINE PUTYTK (XVERT, YST, YINC, CHR)
********************************************************************************
* PLOT TICKS ON Y AXIS
* START AT YST, INCREMENT BY YINC, BOTH WAYS
********************************************************************************
IMPLICIT DOUBLE PRECISION (A-H, O-Z)
IMPLICIT INTEGER (I-N)
CHARACTER*1 CHR
CHARACTER*80 ROW(48)
COMMON /ROWS/ ROW
COMMON /GRID/ X0, DX, Y0, DY, RDX, RDY, NROWS, NCOLS
IF (YINC .LE. 0.D0) RETURN
IF ( DINT(YINC*DY) .LT. 1 ) YINC = RDY
IX = (XVERT - X0)*DX + 1.4999D0
IF (IX .LT. 1) RETURN
IF (IX .GT. NCOLS) RETURN
*** LOOP UNTIL MAX RANGE EXCEEDED
Y = YST
100 IY = (Y - Y0)*DY + 1.4999D0
IF (IY .GE. 1) THEN
IF (IY .GT. NROWS) GO TO 199
ROW(IY)(IX:IX) = CHR
ENDIF
Y = Y + YINC
GO TO 100
*** LOOP UNTIL MIN RANGE EXCEEDED
199 Y = YST
200 IY = (Y - Y0)*DY + 1.4999D0
IF (IY .LE. NROWS) THEN
IF (IY .LT. 1) GO TO 300
ROW(IY)(IX:IX) = CHR
ENDIF
Y = Y - YINC
GO TO 200
300 RETURN
END
SUBROUTINE PUTXY (X, Y, CHR)
********************************************************************************
* PLOT CHARACTER AT X,Y
********************************************************************************
IMPLICIT DOUBLE PRECISION (A-H, O-Z)
IMPLICIT INTEGER (I-N)
CHARACTER*1 CHR
CHARACTER*80 ROW(48)
COMMON /ROWS/ ROW
COMMON /GRID/ X0, DX, Y0, DY, RDX, RDY, NROWS, NCOLS
IX = (X - X0)*DX + 1.4999D0
IY = (Y - Y0)*DY + 1.4999D0
IF (IX .LT. 1) RETURN
IF (IX .GT. NCOLS) RETURN
IF (IY .LT. 1) RETURN
IF (IY .GT. NROWS) RETURN
ROW(IY)(IX:IX) = CHR
RETURN
END
SUBROUTINE GETPLT (IUNIT)
********************************************************************************
* DUMP THE PLOT
********************************************************************************
IMPLICIT DOUBLE PRECISION (A-H, O-Z)
IMPLICIT INTEGER (I-N)
CHARACTER*80 ROW(48)
COMMON /ROWS/ ROW
COMMON /GRID/ X0, DX, Y0, DY, RDX, RDY, NROWS, NCOLS
COMMON/UNITS/ LUNIT
IF (IUNIT .GT. 0) THEN
DO 3 IY = NROWS, 1, -1
WRITE (IUNIT, 4) ROW(IY)
3 CONTINUE
4 FORMAT (' ', A80)
ELSE
DO 5 IY = NROWS, 1, -1
WRITE (LUNIT, 4) ROW(IY)
5 CONTINUE
ENDIF
RETURN
END
SUBROUTINE PUTLIN (XSTART, YSTART, XSTOP, YSTOP, CHR)
********************************************************************************
* PLOT A LINE
********************************************************************************
IMPLICIT DOUBLE PRECISION (A-H, O-Z)
IMPLICIT INTEGER (I-N)
CHARACTER*1 CHR
CHARACTER*80 ROW(48)
COMMON /ROWS/ ROW
COMMON /GRID/ X0, DX, Y0, DY, RDX, RDY, NROWS, NCOLS
IF (YSTOP .EQ. YSTART) THEN
IF (XSTOP .EQ. XSTART) THEN
CALL PUTXY (XSTART, YSTART, CHR)
RETURN
ELSE
DYDX = 0.D0
B = YSTART
IX1 = (XSTART - X0)*DX + 1.4999D0
IX2 = (XSTOP - X0)*DX + 1.4999D0
CALL COLLOP (IX1, IX2, DYDX, B, CHR)
ENDIF
ELSE
IF (XSTOP .EQ. XSTART) THEN
DXDY = 0.D0
A = XSTART
IY1 = (YSTART - Y0)*DY + 1.4999D0
IY2 = (YSTOP - Y0)*DY + 1.4999D0
CALL ROWLOP (IY1, IY2, DXDY, A, CHR)
ELSE
DXDY = (XSTOP - XSTART)/(YSTOP - YSTART)
RDXRDY = RDX/RDY
IF ( DABS(DXDY) .LT. RDXRDY ) THEN
A = XSTART - DXDY*YSTART
IY1 = (YSTART - Y0)*DY + 1.4999D0
IY2 = (YSTOP - Y0)*DY + 1.4999D0
CALL ROWLOP (IY1, IY2, DXDY, A, CHR)
ELSE
DYDX = 1.D0/DXDY
B = YSTART - DYDX*XSTART
IX1 = (XSTART - X0)*DX + 1.4999D0
IX2 = (XSTOP - X0)*DX + 1.4999D0
CALL COLLOP (IX1, IX2, DYDX, B, CHR)
ENDIF
ENDIF
ENDIF
RETURN
END
SUBROUTINE ROWLOP (IY1, IY2, DXDY, A, CHR)
********************************************************************************
* DRAW A LINE--LOOP BY ROWS
********************************************************************************
IMPLICIT DOUBLE PRECISION (A-H, O-Z)
IMPLICIT INTEGER (I-N)
CHARACTER*1 CHR
CHARACTER*80 ROW(48)
COMMON /ROWS/ ROW
COMMON /GRID/ X0, DX, Y0, DY, RDX, RDY, NROWS, NCOLS
*** ORDER AND TEST ROW LIMITS
IF (IY2 .LT. IY1) THEN
TEMP = IY1
IY1 = IY2
IY2 = TEMP
ENDIF
IF (IY1 .GT. NROWS) RETURN
IF (IY2 .LT. 1) RETURN
IF (IY1 .LT. 1) IY1 = 1
IF (IY2 .GT. NROWS) IY2 = NROWS
*** PLOT LINE
DO 1 IY = IY1, IY2
Y = (IY - 1)*RDY + Y0
X = DXDY*Y + A
IX = (X - X0)*DX + 1.4999D0
IF (IX .LT. 1) GO TO 1
IF (IX .GT. NCOLS) GO TO 1
ROW(IY)(IX:IX) = CHR
1 CONTINUE
RETURN
END
SUBROUTINE COLLOP (IX1, IX2, DYDX, B, CHR)
********************************************************************************
* DRAW A LINE--LOOP BY COLUMNS
********************************************************************************
IMPLICIT DOUBLE PRECISION (A-H, O-Z)
IMPLICIT INTEGER (I-N)
CHARACTER*1 CHR
CHARACTER*80 ROW(48)
COMMON /ROWS/ ROW
COMMON /GRID/ X0, DX, Y0, DY, RDX, RDY, NROWS, NCOLS
*** ORDER AND TEST COLUMN LIMITS
IF (IX2 .LT. IX1) THEN
TEMP = IX1
IX1 = IX2
IX2 = TEMP
ENDIF
IF (IX1 .GT. NCOLS) RETURN
IF (IX2 .LT. 1) RETURN
IF (IX1 .LT. 1) IX1 = 1
IF (IX2 .GT. NCOLS) IX2 = NCOLS
*** PLOT LINE
DO 1 IX = IX1, IX2
X = (IX - 1)*RDX + X0
Y = DYDX*X + B
IY = (Y - Y0)*DY + 1.4999D0
IF (IY .LT. 1) GO TO 1
IF (IY .GT. NROWS) GO TO 1
ROW(IY)(IX:IX) = CHR
1 CONTINUE
RETURN
END
SUBROUTINE COMINC (ZMIN, ZMAX, ZINC)
********************************************************************************
* COMPUTE AN INCREMENT FOR TICK MARKS
********************************************************************************
IMPLICIT DOUBLE PRECISION (A-H, O-Z)
IMPLICIT INTEGER (I-N)
DEL = ZMAX - ZMIN
*** AIM AT 10 TICKS PER AXIS, (MAY BE FEWER)
TICK = DEL/10.D0
*** SCALE FROM 1.0 TO 9.999999
VAL = DLOG10(TICK)
IF (VAL .GE. 0.D0) THEN
ILOG = VAL
ELSE
ILOG = VAL - 1.D0
ENDIF
STICK = TICK/10.D0**ILOG
*** SELECT A GRANULARITY
IF (STICK .LE. 1.1D0) THEN
ZINC = 10.D0**ILOG
ELSEIF (STICK .LE. 2.D0) THEN
ZINC = 2.D0*10.D0**ILOG
ELSEIF (STICK .LE. 5.D0) THEN
ZINC = 5.D0*10.D0**ILOG
ELSE
ZINC = 10.D0**(ILOG + 1)
ENDIF
RETURN
END