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Category: Big Data and Visualization

Map of the foreign born population in the United Staes, 1880

Gannett and Hewes’ Visualizations of the 1880 Census

Posted by: Meagan Snow

The end of the 19th century saw a rise in the proliferation of data visualizations alongside traditional cartography and thematic mapping. A terrific example of this type of work is Scribner’s Statistical Atlas of the United States, which “shows by graphic methods [the states’] present condition and their political, social, and industrial development.” The atlas …

Georeferencing: Moving Analog Maps into Modern-Day GIS

Posted by: Meagan Snow

Have you ever wondered how historic maps can be used with today’s modern mapping technologies? One of the ways in which analog maps can be used with GIS (Geographic Information Systems) is through a process called georeferencing. Georeferencing is the process of adding digital spatial reference information to an otherwise non-spatial image. Adding spatial reference …