/usr/share/doc/libplplot11/examples/f77/x17f.f is in libplplot-dev 5.9.9-2ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 | c $Id: x17f.fm4 11680 2011-03-27 17:57:51Z airwin $
c
c Copyright (C) 2004 Alan W. Irwin
c
c This file is part of PLplot.
c
c PLplot is free software; you can redistribute it and/or modify
c it under the terms of the GNU Library General Public License as
c published by the Free Software Foundation; either version 2 of the
c License, or (at your option) any later version.
c
c PLplot is distributed in the hope that it will be useful,
c but WITHOUT ANY WARRANTY; without even the implied warranty of
c MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
c GNU Library General Public License for more details.
c
c You should have received a copy of the GNU Library General Public
c License along with PLplot; if not, write to the Free Software
c Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
c--------------------------------------------------------------------------
c main program
c--------------------------------------------------------------------------
program x17f
implicit none
integer id1, n, autoy, acc, nsteps
parameter ( nsteps = 1000 )
real*8 y1, y2, y3, y4, ymin, ymax, xlab, ylab
real*8 t, tmin, tmax, tjump, dt, noise
integer colbox, collab, colline(4), styline(4)
character*20 legline(4)
external plrandd
real*8 plrandd
include 'plplot_parameters.h'
logical pl_errcode
character*80 errmsg
c Process command-line arguments
call plparseopts(PL_PARSE_FULL)
c plplot initialization
c If db is used the plot is much more smooth. However, because of the
c async X behaviour, one does not have a real-time scripcharter.
c
c call plsetopt('db', '')
c call plsetopt('np', '')
c User sets up plot completely except for window and data
c Eventually settings in place when strip chart is created will be
c remembered so that multiple strip charts can be used simultaneously.
c Specify some reasonable defaults for ymin and ymax
c The plot will grow automatically if needed (but not shrink)
ymin = -0.1d0
ymax = 0.1d0
c Specify initial tmin and tmax -- this determines length of window.
c Also specify maximum jump in t
c This can accomodate adaptive timesteps
tmin = 0.d0
tmax = 10.d0
c percentage of plot to jump
tjump = 0.3d0
c Axes options same as plbox.
c Only automatic tick generation and label placement allowed
c Eventually I'll make this fancier
colbox = 1
collab = 3
c pens color and line style
styline(1) = 2
colline(1) = 2
styline(2) = 3
colline(2) = 3
styline(3) = 4
colline(3) = 4
styline(4) = 5
colline(4) = 5
c pens legend
legline(1) = 'sum'
legline(2) = 'sin'
legline(3) = 'sin*noi'
legline(4) = 'sin+noi'
c legend position
xlab = 0.d0
ylab = 0.25d0
c autoscale y
autoy = 1
c don't scrip, accumulate
acc = 1
c Initialize plplot
call plinit()
call pladv(0)
call plvsta()
c Register our error variables with PLplot
c From here on, we're handling all errors here
c TODO: call plsError(&pl_errcode, errmsg)
call plstripc(id1, 'bcnst', 'bcnstv',
& tmin, tmax, tjump, ymin, ymax,
& xlab, ylab,
& autoy, acc,
& colbox, collab,
& colline, styline, legline,
& 't', '', 'Strip chart demo')
pl_errcode = .false.
if ( pl_errcode ) then
write(*,*) errmsg
stop
endif
c Let plplot handle errors from here on
c TODO: call plsError(NULL, NULL)
c autoscale y
autoy = 0
c accumulate
acc = 1
c This is to represent a loop over time
c Let's try a random walk process
y1 = 0.0d0
y2 = 0.0d0
y3 = 0.0d0
y4 = 0.0d0
dt = 0.1d0
do n = 0,nsteps-1
c wait a little (10 ms) to simulate time elapsing.
c g77 sleep has resolution of 1 sec so the call below is commented out
c because it is like watching paint dry. In any case,
c I like the resulting speedier output when
c you drop sleep altogether from this loop.
c call sleep(1)
t = dble(n) * dt
noise = plrandd() - 0.5d0
y1 = y1 + noise
y2 = sin(t*PI/18.d0)
y3 = y2 * noise
y4 = y2 + noise/3.d0
c There is no need for all pens to have the same number of
c points or beeing equally time spaced.
if ( mod(n,2) .ne. 0 ) then
call plstripa(id1, 0, t, y1)
endif
if ( mod(n,3) .ne. 0 ) then
call plstripa(id1, 1, t, y2)
endif
if ( mod(n,4) .ne. 0 ) then
call plstripa(id1, 2, t, y3)
endif
if ( mod(n,5) .ne. 0 ) then
call plstripa(id1, 3, t, y4)
endif
c use_ double buffer (-db on command line)
c call pleop()
enddo
c Destroy strip chart and it's memory
call plstripd(id1)
call plend()
end
|