Google Public Data is a Google service that aims to get statistical data are best interpreted by users. For it offers researchers, journalists and the general public application which generates interactive graphics that facilitate data interpretation.
Graphics can be embedded on web pages and are hosted on Google servers (identical to Youtube, but with graphics). In addition, public graphs are updated automatically, so when embedding of one of these graphics on our website, data is updated as the owner of these updates its database.
This link can be found all kinds of data: Google Public Data
The tool allows you to choose between different chart types (line, bar or bubbles), you can also be chosen the color and size of the variables, and the type of scale (linear or logarithmic) axis.
The chart below compares I show the arrival of tourists to different countries of the European Union (vertical axis) with the number of overnight stays (abscissa) ... but can be any combination of data.
Note: We can see another application of the same technology, but this time used by the Generalitat de Catalunya to graphically show the evolution of the Catalan population. The graph compares the total Catalan population to the number of residents born abroad. See: graphic Idescat. For each of the populations it is necessary to put the cursor over the ball (the data eye. 51.6% of the population of Castelló d'Ampuries born abroad ... I had no idea)