gnuplotPHP

A 2-D data plotting library for PHP using gnuplot.

Based in Gergwar GnuPlot (https://github.com/Gregwar/GnuPlot).

Requirements

PHP 5.4 (or greater).
gnuplot 5.0 (or greater).
fontconfig tool set (for pdfcairo and pngcairo terminals).
libgd (for gif, jpeg and png terminals).

Usage

gnuplotPHP works in a "batch like" mode. First, you should set the object properties to fit your needs. There are defined many constants for the properties, but they follow the gnuplot standard syntax, so setting them "manually" should work without problems. For example:

$gnuplot->key_position = \pakitometal\gnuplotPHP::KEY_POSITION_UNSET;
$gnuplot->title = 'Data plot test';
$gnuplot->plotstyle = \pakitometal\gnuplotPHP::PLOTSTYLE_LINES;
$gnuplot->terminal = \pakitometal\gnuplotPHP::TERMINAL_PNGCAIRO;

When ready to plot, call the plot_data method, passing an array with the data to plot as a parameter. This method will return an string with the plotted data, which can be written to a file:

$graph = $gnuplot->plot_data($dataset);
file_put_contents('test.png', $graph);

You can find a full (basic) example of use in the test.php file.

Most property values and extra commands use the standard gnuplot syntax. Refer to the gnuplot homepage for further details.

Supported gnuplot terminals

dumb
gif
jpeg
pdfcairo
png
pngcairo
svg

Supported gnuplot plot styles (2-D only)

boxerrorbars
boxes
boxxyerrorbars
candlesticks
circles
ellipses
dots
filledcurves
fillsteps
financebars
fsteps
histeps
histogram
image
impulses
labels
lines
linespoints
parallelaxes
points
steps
rgbalpha
rgbimage
vectors
xerrorbars
xyerrorbars
yerrorbars
xerrorlines
xyerrorlines
yerrorlines

License