An exemple of a dataviz using R with ggplot2 and reshape libraries
I started with an awfull dataset found here : https://www.data.gouv.fr/fr/datasets/liste-des-jeux-de-donnees-ouvertes-des-principaux-observatoires-numeriques-francais
Then I worked with Microsoft Excel to simplify our dataset, the result is presented here in the file named dataviz_exo_1_data.csv
I choose to create a simple dot plot with ggplot2 and the function "melt" frome the reshape library to prepare the dataset.
