Ryan’s Georeferenced map

  • In class, what I did not realize was that the historical map shows only a part of the world, not the whole world. It’s only when I was georeferencing for this assignment that I figured this out. Another thing that I learnt when doing this assignment is that although the names of the places on the historic map are old names not used anymore, they are still informative when we want to know where this part of the world coincide with today’s map. For example, the region “Italia” on the old map is obviously equivalent to Italy. I also figured out that the zooming in really helps to place the dots exactly where you want.
  • I can access the map through the GIS apps or I can export to GeoTIFF

  • I can see many possibilities for georectified maps. For example, we could overlay maps of different epochs to see how certain geographical features changed over time. I believe we can also use I’m built 3D tools to render a better experience. There’s also the ability to use high resolution so as to inspect the maps in detail, reminiscent of a magnifying glass. I am sure that there are many other things we can do with georectified maps.

• Some of the problems with georeferencing that I can think of are (i) the historical map when get deformed when we try to georeference it depending on the type of transformation applied. (ii) with no labels on the historical map, it is difficult to know where the landmarks are; this makes it hard to match the historical map with the present-day one. (iii) We can’t always trust the labels of the historical maps: a map labeled as Spain for instance may actually not be Spain but another country, city, etc… This makes it hard for doing georeferencing.

• In my opinion, the georeferencing technique would not be suitable for research questions that don’t have anything to do with looking at spatial relationships and the mapping of one area onto another. For example, the scientific question ” what’s the nature of the atom?” cannot be resolved by georeferencing.

By the way, here is a link to my georeferenced map:



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