This is just mind boggling. Does anyone know why there are no rivers in the southern part of inland Florida?
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Everglades (National Park) and Big Cypress Swamp. It is all underwater, or one giant river (Shark River Slough).
This kind of work is visually stunning, and I've seen several of this type of thing now (all US roads; pop density by block for all of US).
It's amazing to see but I cringe a little at the attention paid (in Tech blogs mostly) to what is essentially a single data layer, of relatively small features, over a relatively large area. It looks incredibly complex because it is, but it also has a way of looking like it was very difficult to produce while I think it was probably only very tedious to produce and shows off advances in computing power over use of mapping techniques.
Not to begrudge any one the fun of making stuff like this. It's fantastic to see. But it connects so closely with the GIS phenomena of adding pre existing data layers to a map layout, changing the default color, and thinking you've made a map.
Here's the All Roads one (at least they changed the projection):
And the block dot density map:
GIS Reference and Instruction Specialist, Stanford Geospatial Center.
Not to mention the data artifacts, where you can see "chunks" with a different density of rivers, with straight "boundaries" between one part and another.
The rivers of the US map is not really a map of rivers in the US but a map of the US river layer map - incomplete and inconsistent in its coverage - you can see the density of the rivers changing. To me I just see inconsistencies in data collection.
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