program main !*****************************************************************************80 ! !! QUICKPLOT_CONTOUR demonstrates the DISLIN quickplot command QPLCON. ! ! Licensing: ! ! This code is distributed under the GNU LGPL license. ! ! Modified: ! ! 26 February 2014 ! ! Author: ! ! John Burkardt ! ! Reference: ! ! Helmut Michels, ! The Data Plotting Software DISLIN - version 10.4, ! Shaker Media GmbH, January 2010, ! ISBN13: 978-3-86858-517-9. ! use dislin implicit none integer ( kind = 4 ), parameter :: m = 100 integer ( kind = 4 ), parameter :: n = 100 integer ( kind = 4 ) i integer ( kind = 4 ) j integer ( kind = 4 ) levels real ( kind = 8 ) x real ( kind = 8 ) y real ( kind = 8 ) zmat(m,n) call timestamp ( ) write ( *, '(a)' ) ' ' write ( *, '(a)' ) 'QUICKPLOT_CONTOUR:' write ( *, '(a)' ) ' FORTRAN90 version' write ( *, '(a)' ) ' Demonstrate the DISLIN "quickplot" command QPLCON' write ( *, '(a)' ) ' to make a contour plot of data stored as a matrix.' ! ! Set up the data. ! do i = 1, m x = 1.6D+00 * real ( i - 1, kind = 8 ) / real ( m - 1, kind = 8 ) do j = 1, n y = 1.6D+00 * real ( j - 1, kind = 8 ) / real ( n - 1, kind = 8 ) zmat(i,j) = ( x * x - 1.0D+00 )**2 + ( y * y - 1.0D+00 )**2 end do end do ! ! Specify the format of the output file. ! call metafl ( 'png' ) ! ! Indicate that new data overwrites old data. ! call filmod ( 'delete' ) ! ! Specify the name of the output graphics file. ! call setfil ( 'quickplot_contour.png' ) ! ! Choose the page size and orientation. ! call setpag ( 'usal' ) ! ! For PNG output, reverse the default black background to white. ! call scrmod ( 'reverse' ) ! ! Open DISLIN. ! call disini ( ) ! ! Label the axes and the plot. ! call name ( '<-- X -->', 'X' ) call name ( '<-- Y -->', 'Y' ) call titlin ( 'Quick plot by QPLCON', 2 ) ! ! Draw the curve. ! levels = 20 call qplcon ( zmat, m, n, levels ) ! ! Close DISLIN. ! call disfin ( ) ! ! Terminate. ! write ( *, '(a)' ) ' ' write ( *, '(a)' ) 'QUICKPLOT_CONTOUR:' write ( *, '(a)' ) ' Normal end of execution.' write ( *, '(a)' ) ' ' call timestamp ( ) stop end subroutine timestamp ( ) !*****************************************************************************80 ! !! TIMESTAMP prints the current YMDHMS date as a time stamp. ! ! Example: ! ! 31 May 2001 9:45:54.872 AM ! ! Licensing: ! ! This code is distributed under the GNU LGPL license. ! ! Modified: ! ! 18 May 2013 ! ! Author: ! ! John Burkardt ! ! Parameters: ! ! None ! implicit none character ( len = 8 ) ampm integer ( kind = 4 ) d integer ( kind = 4 ) h integer ( kind = 4 ) m integer ( kind = 4 ) mm character ( len = 9 ), parameter, dimension(12) :: month = (/ & 'January ', 'February ', 'March ', 'April ', & 'May ', 'June ', 'July ', 'August ', & 'September', 'October ', 'November ', 'December ' /) integer ( kind = 4 ) n integer ( kind = 4 ) s integer ( kind = 4 ) values(8) integer ( kind = 4 ) y call date_and_time ( values = values ) y = values(1) m = values(2) d = values(3) h = values(5) n = values(6) s = values(7) mm = values(8) if ( h < 12 ) then ampm = 'AM' else if ( h == 12 ) then if ( n == 0 .and. s == 0 ) then ampm = 'Noon' else ampm = 'PM' end if else h = h - 12 if ( h < 12 ) then ampm = 'PM' else if ( h == 12 ) then if ( n == 0 .and. s == 0 ) then ampm = 'Midnight' else ampm = 'AM' end if end if end if write ( *, '(i2,1x,a,1x,i4,2x,i2,a1,i2.2,a1,i2.2,a1,i3.3,1x,a)' ) & d, trim ( month(m) ), y, h, ':', n, ':', s, '.', mm, trim ( ampm ) return end