The first comprehensive analysis of data on "moral statistics'' (crimes, suicide, literacy, etc.) shown on thematic unclassed choropleth maps; bar charts (of crime, by age groupings and months)
Guerry's ordonnateur statistique is arguably the first mechanical device invented to aid statistical calculation and the assessment of the relationship between social and moral variables.
The first comparative choropleth thematic maps, showing crimes against persons and crimes against property in relation to level of instruction by departments in France