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R is sometime criticized for producing graphs not as elaborated as Matlab ones, or other softwares’. Here is a link to a graph gallery by Romain Françoisto “enhance your data visualization with R”. The corresponding R code is given. Might be useful for ENSAE students for ‘statap’ projects. Below are four examples.

The maps package will turn out useful for at least one group:

For multiple histograms on a single graph:

Here is a way to add a third (positive) variable on a scatter plot:

To finish with, and because I’m keen on ternary plots: