Wednesday, June 8, 2016

Georeferencing, Mod 5


   In this lab, we georeferenced a historical map of Macao (present day Macau), created by explorer James Cook and published in 1785. Macau is located nearby Hong Kong, China and is a popular tourist location. The image was downloaded from the David Rumsey Historical Map Collection website. I georeferenced the historical map to a present day basemap by selecting control points on each map to connect to one another. The historical map is distorted due to 'historical' inaccuracies concerning actual island locations and present day differences. However, I based my control points off of still existing features, such as elevation points (with the help of a topography basemap), and was able to get the historical map to represent present day Macau as close as I could.

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