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tombhtoday at 1:22 PM1 replyview on HN

I was wondering that too, that this might be a better visualisation of certain geological features. But I don't have much experience, so can't say for sure.


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colechristensentoday at 1:28 PM

It's a sort of high-pass filter I guess? Using the curvature of the earth to highlight local changes in elevation.

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