/usr/share/doc/libplplot12/examples/f95/x12f.f90 is in libplplot-dev 5.10.0+dfsg-1.
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! Demonstration program for PLplot: Bar chart example.
!
! Copyright (C) 2004 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
program x12f95
use plplot
implicit none
character(len=20) :: string
integer :: i
real(kind=plflt) :: y0(10)
real(kind=plflt) :: pos(5) = (/0.0_plflt, 0.25_plflt, 0.5_plflt, 0.75_plflt, 1.0_plflt/)
real(kind=plflt) :: red(5) = (/0.0_plflt, 0.25_plflt, 0.5_plflt, 1.0_plflt, 1.0_plflt/)
real(kind=plflt) :: green(5) = (/1.0_plflt, 0.5_plflt, 0.5_plflt, 0.5_plflt, 1.0_plflt/)
real(kind=plflt) :: blue(5) = (/1.0_plflt, 1.0_plflt, 0.5_plflt, 0.25_plflt, 0.0_plflt/)
! Process command-line arguments
call plparseopts(PL_PARSE_FULL)
call plinit()
call pladv(0)
call plvsta
call plwind( 1980._plflt, 1990._plflt, 0._plflt, 35._plflt )
call plbox( 'bc', 1._plflt, 0, 'bcnv', 10._plflt, 0 )
call plcol0(2)
call pllab( 'Year', 'Widget Sales (millions)', '#frPLplot Example 12' )
y0 = (/ 5, 15, 12, 24, 28, 30, 20, 8, 12, 3 /)
call plscmap1l(.true.,pos,red,green,blue)
do i = 0, 9
! call plcol0(i + 1)
call plcol1(dble(i)/9.0_plflt)
call plpsty(0)
call plfbox( 1980._plflt+i, y0(i+1) )
write (string, '(i0)') int(y0(i+1))
call plptex( 1980._plflt+i+0.5_plflt, y0(i+1)+1._plflt, 1._plflt, 0._plflt, 0.5_plflt, string )
write (string, '(i0)')1980+i
call plmtex( 'b', 1._plflt, (i+1)*0.1_plflt-0.05_plflt, 0.5_plflt, string )
enddo
! Don't forget to call PLEND to finish off!
call plend
contains
subroutine plfbox(x0, y0)
real(kind=plflt) x0, y0, x(4), y(4)
x(1) = x0
y(1) = 0._plflt
x(2) = x0
y(2) = y0
x(3) = x0+1._plflt
y(3) = y0
x(4) = x0+1._plflt
y(4) = 0._plflt
call plfill(x, y)
call plcol0(1)
call pllsty(1)
call plline(x, y)
end subroutine plfbox
end program x12f95
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