vidalmb/gnuplot repository overview

⁠Docker gnuplot⁠

This is an Alpine Linux based Docker Container to run the latest version of gnuplot⁠.

The gnuplot softwware is installed from Alpine standard package.

Basic TTF fonts like Arial are also included, so the generated e.g. PNGs should look good and without any warnings.

⁠Usage

This image will call the gnuplot binary using /work as WORKDIR.

Map a local directory to /work provide either a gnuplot script or use the -e parameter to supply a "command list" as parameter (see the example section).

docker run --rm -v $(pwd):/work vidalmb/gnuplot your_file.gnu

⁠Example

In this example we will plot the CPU temperature previously registered in a datafile (temp_fan5v) with the following format: hour = temperature.

# generate the plot
docker run --rm -v $(pwd):/work vidalmb/gnuplot -e \
   "set xdata time;
   set timefmt '%H:%M:%S';
   set format x '%H:%M';
   set xrange ['11:20':'14:40'];
   set xlabel 'Hora';
   set ylabel 'Temperatura';
   set grid;
   set datafile separator '=';
   set term png size 800,380;
   set output 'cpu-temp.png';
   plot 'temp_fan5v' every 1 using 1:2 title 'Temperatura CPU' with lines linewidth 2;"

This will product a PNG file called cpu-temp.png in the cwd.

⁠Debugging

To run a shell inside the container:

docker run --rm -it -v $(pwd):/work --entrypoint /bin/sh vidalmb/gnuplot

⁠Author

Vidal Mate (vidalmb at protonmail dot com)

⁠MIT License

See LICENSE⁠.