plotpipe: Updated to support >3 columns, titles, and headers.
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Ole Tange
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6
plotpipe/example1.csv
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plotpipe/example1.csv
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@ -0,0 +1,6 @@
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Header1,header2,header3
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1,2,3
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2,4,5
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3,4,7
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4,2,1
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5,1,2
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6
plotpipe/example2.csv
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plotpipe/example2.csv
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Header1;header2;header3
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1;2;3
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2;4;5
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3;4;7
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4;2;1
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5;1;2
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9
plotpipe/example3.csv
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plotpipe/example3.csv
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#Title line1 with "
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#Title line2 with '
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Header1 header 2 header3
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1 2 3
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2 100 0
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3 4 7
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5 1
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6 1
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6 4 4
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Can't render this file because it contains an unexpected character in line 1 and column 19.
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plotpipe/example4.csv
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plotpipe/example4.csv
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Header1 header2 header3
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1 2 3
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2 4 5
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3 4 7
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4 2 1
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5 1 2
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6
plotpipe/example5.csv
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plotpipe/example5.csv
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Header1 header2 header3
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1 4 3
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2 4 5
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3 4 7
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4 2 1
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5 1 2
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@ -4,7 +4,7 @@
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=head1 NAME
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plotpipe - Plot 1D-data or 2D-data from a pipe
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plotpipe - Plot CSV data from a pipe
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=head1 SYNOPSIS
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@ -16,6 +16,9 @@ I<datagenerator> | B<plotpipe> [-H] [-0] [-C str] [-h] [-V]
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B<plotpipe> is a simple wrapper for GNUPlot to simply plot 1D and 2D-data.
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The input is a CSV-file. Lines starting with '#' will be used as
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titles on the plot.
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=head1 OPTIONS
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@ -25,14 +28,17 @@ B<plotpipe> is a simple wrapper for GNUPlot to simply plot 1D and 2D-data.
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=item B<-C> I<string>
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Use I<string> as column separator.
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Use I<string> as column separator. B<plotpipe> will try to autoguess
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the separator. If it guesses wrong, use B<--colsep>.
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=item B<--header>
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=item B<-H>
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Ignore first line of input (it is a header).
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Use the first line as legend for data in columns. B<plotpipe> will try
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to autoguess if the first line is a header. If it guesses wrong, use
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B<--header>.
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=item B<--help>
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@ -65,10 +71,40 @@ Plot the points (1,101) .. (100,200):
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paste <(seq 100) <(seq 101 200) | plotpipe
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Plot the points (1,101) .. (100,200) and (1,300) .. (100,102):
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paste <(seq 100) <(seq 101 200) <(seq 300 -2 102) | plotpipe
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=head1 EXAMPLE
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input.csv:
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#Title line 1
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#This is title line 2
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X-axis-header Values1 Values2
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1 28 32
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2 12 35
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3 3.5 3.5
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cat input.csv | plotpipe
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=head1 EXAMPLE
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input.csv:
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#Title line 1
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#This is title line 2
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X axis header,Values 1,Values 2
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1,28,32
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2,12,35
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3,3.5,3.5
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cat input.csv | plotpipe
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=head1 AUTHOR
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Copyright (C) 2019 Ole Tange,
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Copyright (C) 2019-2020 Ole Tange,
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http://ole.tange.dk and Free Software Foundation, Inc.
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@ -150,25 +186,168 @@ sub help() {
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"",);
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}
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sub shell_quote_scalar_default($) {
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# Quote for other shells (Bourne compatibles)
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# Inputs:
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# $string = string to be quoted
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# Returns:
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# $shell_quoted = string quoted as needed by the shell
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my $s = $_[0];
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if($s =~ /[^-_.+a-z0-9\/]/i) {
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$s =~ s/'/'"'"'/g; # "-quote single quotes
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$s = "'$s'"; # '-quote entire string
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$s =~ s/^''//; # Remove unneeded '' at ends
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$s =~ s/''$//; # (faster than s/^''|''$//g)
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return $s;
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} elsif ($s eq "") {
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return "''";
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} else {
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# No quoting needed
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return $s;
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}
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}
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sub Q($) {
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return shell_quote_scalar_default($_[0]);
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}
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sub my_dump(@) {
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# Returns:
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# ascii expression of object if Data::Dump(er) is installed
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# error code otherwise
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my @dump_this = (@_);
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eval "use Data::Dump qw(dump);";
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if ($@) {
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# Data::Dump not installed
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eval "use Data::Dumper;";
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if ($@) {
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my $err = "Neither Data::Dump nor Data::Dumper is installed\n".
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"Not dumping output\n";
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::status($err);
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return $err;
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} else {
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return Dumper(@dump_this);
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}
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} else {
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# Create a dummy Data::Dump:dump as Hans Schou sometimes has
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# it undefined
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eval "sub Data::Dump:dump {}";
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eval "use Data::Dump qw(dump);";
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return (Data::Dump::dump(@dump_this));
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}
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}
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sub max(@) {
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# Returns:
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# Maximum value of array
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my $max;
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for (@_) {
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# Skip undefs
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defined $_ or next;
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defined $max or do { $max = $_; next; }; # Set $_ to the first non-undef
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$max = ($max > $_) ? $max : $_;
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}
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return $max;
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}
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sub find_sep(@) {
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# Try common find the separators.
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# Do we get the same for each line?
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my @csv = grep { not /^#/ } @_;
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my @sep = (",", "\t", ";", '\s+');
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my $columns;
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my %col;
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for my $sep (@sep) {
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for my $line (@csv) {
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$columns = split /$sep/, $line;
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if($columns > 1) {
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$col{$sep."\0".$columns}++
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}
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}
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}
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# Find max $col{$sep,$columns}
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my $most_lines = max(values %col);
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my %sepcol = (map { split /\0/, $_ }
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grep { $col{$_} == $most_lines } keys %col);
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my $most_cols = max(values %sepcol);
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return ((grep { $sepcol{$_} == $most_cols } keys %sepcol)[0]);
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}
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Getopt::Long::Configure("bundling","require_order");
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my $retval = GetOptions(options_hash());
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$Global::progname = "plotpipe";
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$Global::version = 20200810;
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$Global::version = 20201005;
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if($opt::version) { version(); exit 0; }
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if($opt::help) { help(); exit 0; }
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if($opt::null) { $/ = "\0"; }
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$opt::colsep ||= '\s+';
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if($opt::header) { <> }
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$line1 = <>;
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@col = split /$opt::colsep/, $line1;
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if($#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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# Read csv
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my @csv = <>;
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# Title = lines starting with #
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my @title = map { s/^#//; s/"/''/g; $_ } map { "$_" } grep { /^#/ } @csv;
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if(@title) { chomp($title[$#title]); }
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@csv = grep { not /^#/ } @csv;
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# Autoguess separator
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if(not defined $opt::colsep) {
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$opt::colsep = find_sep(@csv);
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}
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print GNUPLOT $line1, <>;
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# Autoguess header
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my @header;
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if(not defined $opt::header) {
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# Autodetect header
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# if line 1 contains a-z => header
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@header = split /$opt::colsep/, $csv[0];
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for(@header) {
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if(/[a-z]/i) { $opt::header = 1; last; }
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}
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}
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if($opt::header) {
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@header = split /$opt::colsep/, $csv[0];
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chomp(@header);
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shift @csv;
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} else {
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@header = ();
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}
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# Save data to tmpfile that will be read by Gnuplot
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use File::Temp qw(tempfile);
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$ENV{'TMPDIR'} ||= "/tmp";
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my($filehandle,$filename) =
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tempfile(DIR=>$ENV{'TMPDIR'}, TEMPLATE => 'plotXXXXX');
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for(@csv) {
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chomp;
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# print((join "\t", split /$opt::colsep/, $_),"\n");
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print $filehandle ((join "\001", split /$opt::colsep/, $_),"\n");
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}
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# Generate the variant part of Gnuplot script
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my $ncols = split /$opt::colsep/, $csv[0];
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for(my $col = 2; $col <= $ncols; $col++) {
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my $legend;
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if($opt::header) {
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$legend = qq( title "$header[$col-1]");
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}
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push @plotscript, qq("$filename" using 1:$col with lines $legend,);
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}
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# Make full Gnuplot script
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my $plotscript=<<_EOS ;
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set title "@title";
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set xtics rotate;
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set autoscale;
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set xlabel "$header[0]";
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set grid;
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set key right center;
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set datafile separator "\001";
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plot @plotscript
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_EOS
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open GNUPLOT,"|-", "gnuplot -p -e ".Q($plotscript) or die;
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# print "gnuplot -p -e ".($plotscript);
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close GNUPLOT;
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unlink $filename;
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