76 lines
1.5 KiB
Perl
Executable file
76 lines
1.5 KiB
Perl
Executable file
#!/usr/bin/perl
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=pod
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=head1 NAME
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plotpipe - Plot 1D-data or 2D-data from a pipe
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=head1 SYNOPSIS
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I<datagenerator> | B<plotpipe>
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=head1 DESCRIPTION
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B<plotpipe> is a simple wrapper for GNUPlot to simply plot 1D and 2D-data.
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=head1 EXAMPLE
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Plot the points (1,101) .. (100,200):
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paste <(seq 100) <(seq 101 200) | plotpipe
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=head1 AUTHOR
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Copyright (C) 2019 Ole Tange,
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http://ole.tange.dk and Free Software Foundation, Inc.
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=head1 LICENSE
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Copyright (C) 2012 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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at your option any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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=head1 DEPENDENCIES
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B<pipeplot> uses B<gnuplot>.
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=head1 SEE ALSO
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B<gnuplot>
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=cut
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$line1 = <>;
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@col = split /\s+/, $line1;
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if($#col == 1) {
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# 2 col
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open GNUPLOT,"|-", q(gnuplot -p -e 'plot "/dev/stdin"') or die;
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} elsif($#col == 2) {
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# 3 col (3rd = color)
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open GNUPLOT,"|-", q(gnuplot -p -e 'plot "/dev/stdin" using 1:2:3 with points palette') or die;
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} else {
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die "$#col,@col,$line1";
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}
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print GNUPLOT $line1, <>;
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close GNUPLOT;
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