plotpipe: --log axis.
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Ole Tange
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3b0b378249
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@ -9,12 +9,12 @@ plotpipe - Plot CSV data from a pipe
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=head1 SYNOPSIS
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I<datagenerator> | B<plotpipe> [-n] [-H] [-0] [--logx] [--logy] [-C str] [-h] [-V]
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I<datagenerator> | B<plotpipe> [-n] [-H] [-0] [--log axis] [-C str] [-h] [-V]
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=head1 DESCRIPTION
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B<plotpipe> is a simple wrapper for Gnuplot to simply plot data.
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B<plotpipe> is a simple wrapper for Gnuplot to simply plotting 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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@ -48,11 +48,11 @@ B<--header>.
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Show help.
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=item B<--logx>
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=item B<--log x>
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=item B<--logy>
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=item B<--log y>
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=item B<--logxy>
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=item B<--log xy>
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Logarithmic X/Y/X&Y axis.
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@ -139,7 +139,18 @@ input.csv:
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4 9 16
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8 27 64
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cat input.csv | plotpipe --nox --logy
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cat input.csv | plotpipe --nox --log y
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=head1 EXAMPLE: XY-line plots
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You are not limited to a simple graph, but can also do XY-line plots.
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seq 0 0.001 6.29 |
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perl -nE 'say sin($_*100)*0.3+0.5*cos($_*2),",",
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sin($_*2)-cos($_*100)*0.3,",",
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sin($_)+cos($_*99),",",
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sin($_*3)-cos($_*101)' |
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plotpipe
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=head1 LIMITS
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@ -149,7 +160,7 @@ B<plotpipe> is limited by Gnuplot.
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=head1 AUTHOR
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Copyright (C) 2019-2020 Ole Tange,
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Copyright (C) 2019-2021 Ole Tange,
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http://ole.tange.dk and Free Software Foundation, Inc.
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@ -173,12 +184,12 @@ 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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B<pipeplot> uses B<gnuplot> and B<perl>.
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=head1 SEE ALSO
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B<perl>, B<gnuplot>
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B<gnuplot>, B<perl>
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=cut
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@ -193,9 +204,7 @@ sub options_hash() {
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"version|V" => \$opt::version,
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"colsep|col-sep|C=s" => \$opt::colsep,
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"help|h" => \$opt::help,
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"logx" => \$opt::logx,
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"logy" => \$opt::logy,
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"logxy" => \$opt::logxy,
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"log=s" => \$opt::log,
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"null|0" => \$opt::null,
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"nox|n" => \$opt::nox,
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"header|H" => \$opt::header,
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@ -208,7 +217,7 @@ sub version() {
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print join
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("\n",
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"$Global::progname $Global::version",
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"Copyright (C) 2020 Ole Tange, http://ole.tange.dk and Free Software",
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"Copyright (C) 2020-2021 Ole Tange, http://ole.tange.dk and Free Software",
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"Foundation, Inc.",
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"License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>",
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"This is free software: you are free to change and redistribute it.",
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@ -219,6 +228,19 @@ sub version() {
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);
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}
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sub status(@) {
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my @w = @_;
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my $fh = $Global::status_fd || *STDERR;
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print $fh map { ($_, "\n") } @w;
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flush $fh;
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}
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sub error(@) {
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my @w = @_;
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my $prog = $Global::progname || "plotpipe";
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status(map { ($prog.": Error: ". $_); } @w);
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}
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sub help() {
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# Returns: N/A
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print join
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@ -231,7 +253,7 @@ sub help() {
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'-0 Records separated by \0 instead of \n',
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'-C str Columns separator',
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'-V Show version',
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'--logx/logy/logxy Log x/y/x&y',
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'--log A Log axis A (x y xy)',
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'-n No X value',
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'-s num Smooth num Y-values',
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"",
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@ -341,9 +363,12 @@ sub find_sep(@) {
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Getopt::Long::Configure("bundling","require_order");
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my $retval = GetOptions(options_hash());
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if(not GetOptions(options_hash())) {
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exit(255);
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}
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$Global::progname = "plotpipe";
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$Global::version = 20201222;
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$Global::version = 20210222;
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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) { $/ = "\0"; }
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@ -409,8 +434,7 @@ if($ncols >= 2 and not $opt::nox) {
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if($opt::smooth) {
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my (@sum,@new);
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if($#tbl < $opt::smooth) {
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print STDERR "plotpipe: --smooth must be lower than the ",
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"number of rows (",1+$#tbl,")\n";
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error("--smooth must be lower than the number of rows (".(1+$#tbl).")");
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exit(255);
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}
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my $smooth = $opt::smooth-1;
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@ -445,16 +469,23 @@ for(my $col = 2; $col <= $ncols; $col++) {
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if($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 $legend,);
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push @legend, qq("$filename" using 1:$col with lines $legend,);
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}
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# Add --logx/--logy/--logxy to Gnuplot script
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# Add --log axis to Gnuplot script
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my @logscale;
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if($opt::logx or $opt::logxy) {
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push @logscale, "set logscale x 10;";
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}
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if($opt::logy or $opt::logxy) {
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push @logscale, "set logscale y 10;";
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if($opt::log) {
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if($opt::log eq "x") {
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push @logscale, "set logscale x 10;";
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} elsif($opt::log eq "y") {
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push @logscale, "set logscale y 10;";
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} elsif($opt::log eq "xy" or $opt::log eq "yx") {
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push @logscale, "set logscale x 10;";
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push @logscale, "set logscale y 10;";
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} else {
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error("--log $opt::log is not supported. Only x y xy are supported");
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exit(255);
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}
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}
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# Make full Gnuplot script
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@ -467,7 +498,7 @@ set xlabel "$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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plot @legend
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_EOS
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open GNUPLOT,"|-", "gnuplot -p -e ".Q($plotscript) or die;
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