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|
! Demo of multiple stream/window capability
!
! Copyright (C) 2004 Arjen Markus
! Copyright (C) 2004-2016 Alan W. Irwin
!
! This file is part of PLplot.
!
! PLplot is free software; you can redistribute it and/or modify
! it under the terms of the GNU Library General Public License as
! published by the Free Software Foundation; either version 2 of the
! License, or (at your option) any later version.
!
! PLplot is distributed in the hope that it will be useful,
! but WITHOUT ANY WARRANTY; without even the implied warranty of
! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! GNU Library General Public License for more details.
!
! You should have received a copy of the GNU Library General Public
! License along with PLplot; if not, write to the Free Software
! Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
! N.B. the pl_test_flt parameter used in this code is only
! provided by the plplot module to allow convenient developer
! testing of either kind(1.0) or kind(1.0d0) floating-point
! precision regardless of the floating-point precision of the
! PLplot C libraries. We do not guarantee the value of this test
! parameter so it should not be used by users, and instead user
! code should replace the pl_test_flt parameter by whatever
! kind(1.0) or kind(1.0d0) precision is most convenient for them.
! For further details on floating-point precision issues please
! consult README_precision in this directory.
!
! Plots several simple functions from other example programs.
!
! This version sends the output of the first 4 plots (one page) to two
! independent streams.
program x14f
use plplot
implicit none
integer digmax
character(len=80) :: driver
character(len=15) :: geometry_master
character(len=15) :: geometry_slave
integer :: fam, num, bmax
real(kind=pl_test_flt), dimension(101) :: x, y
real(kind=pl_test_flt), dimension(6) :: xs, ys
real(kind=pl_test_flt) :: xscale, yscale, xoff, yoff
common /plotdat/ x, y, xs, ys, xscale, yscale, xoff, yoff
real(kind=pl_test_flt) :: xp0, yp0
integer :: xleng0, yleng0, xoff0, yoff0
integer :: plparseopts_rc, plsetopt_rc
logical :: valid_geometry
geometry_master = '500x410+100+200'
geometry_slave = '500x410+650+200'
! Process command-line arguments
plparseopts_rc = plparseopts(PL_PARSE_FULL)
if(plparseopts_rc .ne. 0) stop "plparseopts error"
! If valid geometry specified on command line, use it for both streams.
call plgpage(xp0, yp0, xleng0, yleng0, xoff0, yoff0)
valid_geometry = (xleng0 .gt. 0 .and. yleng0 .gt. 0)
! Set up first stream
if(valid_geometry) then
call plspage(xp0, yp0, xleng0, yleng0, xoff0, yoff0)
else
plsetopt_rc = plsetopt( 'geometry', geometry_master)
if(plsetopt_rc .ne. 0) stop "plsetopt error"
endif
call plssub(2, 2)
call plinit()
call plgdev(driver)
call plgfam(fam,num,bmax)
write(6,'(3A)') 'Demo of multiple output streams via the ', &
trim(driver), ' driver.'
write(6,'(A)') 'Running with the second stream as slave '// &
'to the first.'
write(6,*)
! flush unit 6 so this part of stdout is guaranteed to be written prior
! to stdout generated by second plinit below.
flush(6)
! Start next stream
call plsstrm(1)
if(valid_geometry) then
call plspage(xp0, yp0, xleng0, yleng0, xoff0, yoff0)
else
plsetopt_rc = plsetopt( 'geometry', geometry_slave)
endif
! Turn off pause to make this a slave (must follow master)
call plspause(.false.)
call plsdev(driver)
call plsfam(fam,num,bmax)
plsetopt_rc = plsetopt('fflen','2')
call plinit()
! Set up the data & plot
! Original case
call plsstrm(0)
xscale = 6._pl_test_flt
yscale = 1._pl_test_flt
xoff = 0._pl_test_flt
yoff = 0._pl_test_flt
call plot1()
! Set up the data & plot
xscale = 1._pl_test_flt
yscale = 1.d+6
call plot1()
! Set up the data & plot
xscale = 1._pl_test_flt
yscale = 1.d-6
digmax = 2
call plsyax(digmax, 0)
call plot1()
! Set up the data & plot
xscale = 1._pl_test_flt
yscale = 0.0014_pl_test_flt
yoff = 0.0185_pl_test_flt
digmax = 5
call plsyax(digmax, 0)
call plot1()
! To slave
! The pleop() ensures the eop indicator gets lit.
call plsstrm(1)
call plot4()
call pleop()
! Back to master
call plsstrm(0)
call plot2()
call plot3()
! To slave
call plsstrm(1)
call plot5()
call pleop()
! Back to master to wait for user to advance
call plsstrm(0)
call pleop()
! Call plend to finish off.
call plend()
contains
!======================================================================
subroutine plot1()
use plplot
implicit none
real(kind=pl_test_flt), dimension(101) :: x, y
real(kind=pl_test_flt), dimension(6) :: xs, ys
real(kind=pl_test_flt) :: xscale, yscale, xoff, yoff, xmin, xmax, ymin, ymax
integer :: i
common /plotdat/ x, y, xs, ys, xscale, yscale, xoff, yoff
do i = 1, 60
x(i) = xoff + xscale * real(i,kind=pl_test_flt)/60.0_pl_test_flt
y(i) = yoff + yscale * x(i)**2
enddo
xmin = x(1)
xmax = x(60)
ymin = y(1)
ymax = y(60)
do i = 1, 6
xs(i) = x((i-1)*10+4)
ys(i) = y((i-1)*10+4)
enddo
! Set up the viewport and window using PLENV. The range in X is
! 0.0 to 6.0, and the range in Y is 0.0 to 30.0. The axes are
! scaled separately (just = 0), and we just draw a labelled
! box (axis = 0).
call plcol0(1)
call plenv( xmin, xmax, ymin, ymax, 0, 0 )
call plcol0(6)
call pllab( '(x)', '(y)', '#frPLplot Example 1 - y=x#u2' )
! Plot the data points
call plcol0(9)
call plpoin(xs, ys, 9)
! Draw the line through the data
call plcol0(4)
call plline(x(:60), y(:60))
call plflush
end subroutine plot1
!======================================================================
subroutine plot2()
use plplot
implicit none
real(kind=pl_test_flt), dimension(101) :: x, y
real(kind=pl_test_flt), dimension(6) :: xs, ys
real(kind=pl_test_flt) :: xscale, yscale, xoff, yoff
integer :: i
common /plotdat/ x, y, xs, ys, xscale, yscale, xoff, yoff
!======================================================================
!
! Set up the viewport and window using PLENV. The range in X is
! -2.0 to 10.0, and the range in Y is -0.4 to 2.0. The axes are
! scaled separately (just = 0), and we draw a box with axes
! (axis = 1).
call plcol0(1)
call plenv(-2.0_pl_test_flt, 10.0_pl_test_flt, -0.4_pl_test_flt, 1.2_pl_test_flt, 0, 1 )
call plcol0(2)
call pllab( '(x)', 'sin(x)/x', &
'#frPLplot Example 1 - Sinc Function' )
! Fill up the arrays
do i = 1, 100
x(i) = (i-20.0_pl_test_flt)/6.0_pl_test_flt
y(i) = 1.0_pl_test_flt
if (x(i) .ne. 0.0_pl_test_flt) y(i) = sin(x(i)) / x(i)
enddo
! Draw the line
call plcol0(3)
call plline(x(:100), y(:100))
call plflush
end subroutine plot2
!======================================================================
subroutine plot3()
!
! For the final graph we wish to override the default tick intervals,
! and so do not use_ PLENV
use plplot, double_PI => PL_PI
implicit none
real(kind=pl_test_flt), parameter :: PI = double_PI
real(kind=pl_test_flt), dimension(101) :: x, y
real(kind=pl_test_flt), dimension(6) :: xs, ys
real(kind=pl_test_flt) :: xscale, yscale, xoff, yoff
integer :: i
common /plotdat/ x, y, xs, ys, xscale, yscale, xoff, yoff
call pladv(0)
! Use_ standard viewport, and define X range from 0 to 360 degrees,
! Y range from -1.2 to 1.2.
call plvsta()
call plwind( 0.0_pl_test_flt, 360.0_pl_test_flt, -1.2_pl_test_flt, 1.2_pl_test_flt )
! Draw a box with ticks spaced 60 degrees apart in X, and 0.2 in Y.
call plcol0(1)
call plbox( 'bcnst', 60.0_pl_test_flt, 2, 'bcnstv', 0.2_pl_test_flt, 2 )
! Superimpose a dashed line grid, with 1.5 mm marks and spaces. With
! only a single mark and space element, we do not need arrays
call plstyl( (/1500/), (/1500/) )
call plcol0(2)
call plbox( 'g', 30.0_pl_test_flt, 0, 'g', 0.2_pl_test_flt, 0 )
call plstyl( (/integer ::/), (/integer ::/) )
call plcol0(3)
call pllab( 'Angle (degrees)', 'sine', &
'#frPLplot Example 1 - Sine function' )
do i = 1, 101
x(i) = 3.6_pl_test_flt * (i-1)
y(i) = sin( x(i) * PI/180.0_pl_test_flt )
enddo
call plcol0(4)
call plline(x, y)
call plflush
end subroutine plot3
!======================================================================
subroutine plot4()
use plplot, double_PI => PL_PI
implicit none
real(kind=pl_test_flt), parameter :: PI = double_PI
character(len=3) :: text
real(kind=pl_test_flt), dimension(0:360) :: x0, y0, x, y
real(kind=pl_test_flt) :: dtr, theta, dx, dy, r
integer :: i, j
dtr = PI/180.0_pl_test_flt
do i=0,360
x0(i) = cos(dtr * real(i,kind=pl_test_flt))
y0(i) = sin(dtr * real(i,kind=pl_test_flt))
enddo
! Set up viewport and window, but do not draw box
call plenv(-1.3_pl_test_flt, 1.3_pl_test_flt, -1.3_pl_test_flt, 1.3_pl_test_flt, 1, -2)
do i = 1,10
do j = 0,360
x(j) = 0.1_pl_test_flt*i*x0(j)
y(j) = 0.1_pl_test_flt*i*y0(j)
enddo
! Draw circles for polar grid
call plline(x,y)
enddo
call plcol0(2)
do i = 0,11
theta = 30.0_pl_test_flt*i
dx = cos(dtr*theta)
dy = sin(dtr*theta)
! Draw radial spokes for polar grid
call pljoin(0.0_pl_test_flt, 0.0_pl_test_flt, dx, dy)
write (text,'(i3)') nint(theta)
! Write labels for angle
text = text(nsp(text):)
! Slightly off zero to avoid floating point logic flips at
! 90 and 270 deg.
if (dx.ge.-0.00001_pl_test_flt) then
call plptex(dx, dy, dx, dy, -0.15_pl_test_flt, text)
else
call plptex(dx, dy, -dx, -dy, 1.15_pl_test_flt, text)
end if
enddo
! Draw the graph
do i=0,360
r = sin(dtr*real(5*i,kind=pl_test_flt))
x(i) = x0(i) * r
y(i) = y0(i) * r
enddo
call plcol0(3)
call plline(x,y)
call plcol0(4)
call plmtex('t', 2.0_pl_test_flt, 0.5_pl_test_flt, 0.5_pl_test_flt, &
'#frPLplot Example 3 - r(#gh)=sin 5#gh')
! Flush the plot at end
call plflush
end subroutine plot4
!======================================================================
integer function nsp(text)
! ==================
! Find first non-space character
use plplot
implicit none
character*(*) text
integer l
l = len(text)
nsp = 1
do while(text(nsp:nsp).eq.' ' .and. nsp.lt.l)
nsp = nsp+1
enddo
end function nsp
!======================================================================
subroutine plot5()
use plplot
implicit none
integer :: i, j, nptsx, nptsy, xdim, ydim
! xdim and ydim are the absolute static dimensions.
! nptsx, and nptsy are the (potentially dynamic) defined area of the 2D
! arrays that is actually used.
parameter (xdim=99, ydim=100, nptsx=35,nptsy=46)
real(kind=pl_test_flt), dimension(xdim,ydim) :: z, w
real(kind=pl_test_flt), dimension(11) :: clevel
real(kind=pl_test_flt) :: xx, yy
real(kind=pl_test_flt), dimension(6) :: tr
data clevel /-1._pl_test_flt, -0.8_pl_test_flt, -0.6_pl_test_flt, -0.4_pl_test_flt, &
-0.2_pl_test_flt, &
0._pl_test_flt, 0.2_pl_test_flt, 0.4_pl_test_flt, 0.6_pl_test_flt ,0.8_pl_test_flt, 1._pl_test_flt/
tr(1) = 2._pl_test_flt/real(nptsx-1,kind=pl_test_flt)
tr(2) = 0.0_pl_test_flt
tr(3) = -1.0_pl_test_flt
tr(4) = 0.0_pl_test_flt
tr(5) = 2._pl_test_flt/real(nptsy-1,kind=pl_test_flt)
tr(6) = -1.0_pl_test_flt
! Calculate the data matrices.
do i=1,nptsx
xx = real(i-1-(nptsx/2),kind=pl_test_flt)/real(nptsx/2,kind=pl_test_flt)
do j=1,nptsy
yy = real(j-1-(nptsy/2),kind=pl_test_flt)/real(nptsy/2,kind=pl_test_flt) - 1.0_pl_test_flt
z(i,j) = xx*xx - yy*yy
w(i,j) = 2._pl_test_flt*xx*yy
enddo
enddo
! Plot using identity transform
call plenv(-1.0_pl_test_flt, 1.0_pl_test_flt, -1.0_pl_test_flt, 1.0_pl_test_flt, 0, 0)
call plcol0(2)
call plcont(z,1,nptsx,1,nptsy,clevel,tr)
call plstyl( (/1500/), (/1500/) )
call plcol0(3)
call plcont(w,1,nptsx,1,nptsy,clevel,tr)
call plstyl( (/integer ::/), (/integer ::/) )
call plcol0(1)
call pllab('X Coordinate', 'Y Coordinate', &
'Streamlines of flow')
call plflush
end subroutine plot5
end program x14f
|
