/usr/share/plplot_octave/support/__plt__.m is in octave-plplot 5.10.0+dfsg-1.
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 | ## Copyright (C) 1996 John W. Eaton
##
## This file is part of Octave.
##
## Octave is free software; you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2, or (at your option)
## any later version.
##
## Octave 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
## General Public License for more details.
## Author: jwe
## Modified: jc
function __plt__ (caller, varargin)
global __pl
strm = __pl_init;
switch(caller)
case ("plot")
__pl.type(strm) = 0;
case ("logx")
__pl.type(strm) = 10;
case ("logy")
__pl.type(strm) = 20;
case ("lgxy")
__pl.type(strm) = 30;
otherwise
__pl.type(strm) = 0;
error("__plt__: FIXME")
endswitch
if (!ishold)
__pl.items(strm) = 1;
__pl.lxm(strm) = __pl.lym(strm) = realmax;
__pl.lxM(strm) = __pl.lyM(strm) = -realmax;
endif
if (nargin == 2)
__plt1__ (varargin{1}, "");
elseif (nargin > 2)
hold_state = ishold;
unwind_protect
k = 1;
x = varargin{k++};
nargin = nargin - 2;
x_set = 1;
y_set = 0;
## Gather arguments, decode format, and plot lines.
while (nargin-- > 0)
fmt = "";
new = varargin{k++};
if (ischar (new))
if (! x_set)
error ("plot: no data to plot");
endif
fmt = new;
if (! y_set)
__plt1__ (x, fmt);
else
__plt2__ (x, y, fmt);
endif
hold on;
x_set = 0;
y_set = 0;
elseif (x_set)
if (y_set)
__plt2__ (x, y, fmt);
hold on;
x = new;
y_set = 0;
else
y = new;
y_set = 1;
endif
else
x = new;
x_set = 1;
endif
endwhile
## Handle last plot.
if (x_set)
if (y_set)
__plt2__ (x, y, fmt);
else
__plt1__ (x, fmt);
endif
endif
unwind_protect_cleanup
if (! hold_state)
hold off;
endif
end_unwind_protect
else
msg = sprintf ("%s (x)\n", caller);
msg = sprintf ("%s %s (x, y)\n", msg, caller);
msg = sprintf ("%s %s (x2, y1, x2, y2)\n", msg, caller);
msg = sprintf ("%s %s (x, y, fmt)", msg, caller);
usage (msg);
endif
__pl_plotit;
endfunction
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