Este exemplo traz a criação de uma matriz quadrada típico de matrizes origem/destino utilizadas em pesquisas de tráfego.

First_Plot

Files on the Census tracts from various historical periods are uploaded from DC Open Data.

Week 8

The dataset contains variables related to different characteristics of shrimp in a factory, such as: shrimp species, country where they where produced, total length, etc. The document is still in Spanish.