remuslazar/gnuplot repository overview

⁠Docker gnuplot⁠

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

The gnuplot binary is being compiled from source and also configured to use

• gdlib incl. TTF support
• cairo
• lua

Basic TTF fonts like Arial are also included, so the generated e.g. PNGs using gdlib 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 remuslazar/gnuplot your_file.gnu

⁠Example

In this example we will plot the Global Temperature Time Series.

# fetch yearly sample data from https://datahub.io/core/global-temp
curl -L https://datahub.io/core/global-temp/r/annual.csv > global-temp-data.csv

# generate the plot
docker run --rm -v $(pwd):/work remuslazar/gnuplot -e \
 "set xlabel 'Year'; set ylabel 'Mean';
  set grid;
  set datafile separator ',';
  set term png size 800,380;
  set output 'global-temp.png';
  plot 'global-temp-data.csv' every 2::0 skip 1 using 2:3 title 'Global Temperature' with lines linewidth 2;"

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

See also the files in the examples/ folder for how to plot multiple data sets.

⁠Debugging

To run a shell inside the container:

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

⁠Author

Remus Lazar (remus at lazar dot info)

⁠MIT License

See LICENSE⁠.