Toussaint Loua (1824 – 1907) was a French statistician and was credited for inventing the
heat map
A heat map (or heatmap) is a 2-dimensional data visualization technique that represents the magnitude of individual values within a dataset as a color. The variation in color may be by hue or intensity.
In some applications such as crime analy ...
in information visualization.
Career
Loua was born in Saarn in modern day Germany.
He began his career as a clerk at the
Ministry of Commerce A ministry of trade and industry, ministry of commerce, ministry of commerce and industry or variations is a ministry that is concerned with a nation's trade, industry and commerce.
Notable examples are:
List
*Algeria: Ministry of Industry and ...
in 1850 at the age of 26. From 1875 to 1887, Loua directed the General Directorate of Statistics of France (French: ''Statistique générale de la France''). Under his direction, the SGF published in 1878 the first Statistical Yearbook of France (French: ''Annuaire statistique de la France'') and it was also under its mandate that in 1885 the High Council of Statistics was created.
Bibliography
* 1865 : ''De la mortalité à Paris dans ses rapports'', Berger-Levrault (Paris)
* 1865 : ''Mémoire sur quelques questions de statistique''
* 1867 : « De l'influence des disettes sur les mouvements de la population », ''Journal de la société de statistique de Paris'', vol. 8, pages 94–97
url* 1873 : ''Atlas statistique de la population de Paris'', J. Dejey (Paris)
Version digitale* 1877 : « Les faillites en France depuis 1840 », ''Journal de la société de statistique de Paris'', vol. 18, pages 281-291.
* 1877 : « Le Divorce en Belgique », ''Journal de la société de statistique de Paris'', vol. 18, pages 155-158
url* 1879 : ''Les Logements insalubres à Paris'', Berger-Levrault (Paris)
* 1885 : ''Les Déplacements de la population en France'', Berger-Levrault (Paris)
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* 1888 : ''La France sociale et économique d'après les documents officiels les plus récents'', Paris : Berger-Levrault
* 1889 : « À propos de l'exposition universelle de 1889 », ''Journal de la société de statistique de Paris'', vol. 30, pages 325-330
url
References
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French statisticians
1824 births
1907 deaths
Data and information visualization experts