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cvossyesterday at 7:30 PM1 replyview on HN

What could be causing these large-scale grid lines to show up in the heatmap in Florida?

https://map.alltheviews.world/longest/-83.1653564346176_29.8...


Replies

tombhyesterday at 7:36 PM

Oh wow, yes, very curious. I believe that is caused by the cleaning of the original NASA data by the creator of https://viewfinderpanoramas.org/dem3.html So whilst they improved the data, it still isn't perfect.

Ultimately we plan to mix in higher resolution data from different more recent surveys.