gnuplot Cookbook

Creating a cumulative distribution [new]

In this recipe, we show how to use another useful statistical plot hiding away in the smoothing options, and also new to gnuplot in version 4.4. The curve plotted in the next figure is closely related to the one plotted in the previous recipe. To get the following figure, just integrate the frequency distribution curve:

Getting ready

Make sure you are in a directory with the supplied datafile called randomnormal.text.

How to do it…

The following script will get you the previous figure:

set key top left
plot 'randomnormal.text' using 1:(.001) smooth cumul \
      title "Cumulative distribution"

How it works…

The normalization ...