Finding the Bounding Box of a Dataset (Shallow Thoughts)

Finding the Bounding Box of a Dataset

Yesterday I wrote about PyTopo's difficulty in displaying a large all-US dam dataset. I've finally fixed the bug ... though it's still very slow to display the whole dataset: you have to wait a minute or more to redrew if it's zoomed all the way out to show the whole world.

Wait, the whole world? I thought this dataset was for all dams in the US?

Yes, in theory. In practice, not so much.

(I'm going to cheat a little bit and call this 30 Day Map Challenge Day 3: Polygons, because a bounding box is a polygon and I've spent so much time on this that I definitely don't have time to do any other 30 day projects today.)

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