The EuroNoise project is focussed on noise. Natural, human and artificial noise. Although artificial noise could be made by humans there is no straight border between natural, human and artificial noise (or the lack of it). Anyway we had to find some variables first.
To keep things simple we used only nine variables. First important fact we have the size of the country. Second is the amount of inhabitants. Third the population density of a country. Fourth the amount of mobile phones. Fifth, the amount of internet users (although this is mostly a very silent activity it counts down for the noise factor). Sixth, the amount of airports. Seventh is the length of all roadways counted together. Eight is the length of all railways. And nine is the length of all waterways.
To visualize the data we used a matrix of three horizontal and three vertical rectangles. As a background the major countries are mapped. As you can see the outline of France has the most waterways 8,501 Km (thats the number in blue). For the waterways France is the top waterway country. Germany has the most airports (549). So the airport rectangle has an outline map of Germany. All other European countries sizes will be calculated with the size related to the amount of the major background country.