Plotting histograms

Histograms are a very popular method of discovering the frequency distribution of a set of continuous data. In a histogram, data scientists usually show the quantitative variable along the x axis and frequency of that variable along the y axis. A few key features of histograms that make it very useful are as follows:

  • Only numerical data can be plotted
  • Huge datasets can easily be plotted
  • The x axis is usually used as bins or intervals of quantitative variables
  • In this recipe, we will see how to plot histograms using GRAL

Getting ready

  1. To use GRAL to plot histograms, we need the example applications provided with the library in the form of Jar files. These example applications can be downloaded from http://trac.erichseifert.de/gral/wiki/Download ...

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