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kylebarron / usgs-topo-tiler

Python package to read Web Mercator map tiles from USGS Historical Topographic Maps
https://kylebarron.dev/usgs-topo-mosaic
MIT License
77 stars 3 forks source link

Are all Topo quads in COG? #1

Closed kylebarron closed 4 years ago

kylebarron commented 4 years ago

Find the earliest quad (by dateCreated, not date of the map). Then make sure it's a valid COG?

It looks like all historical topo maps are in GeoTIFF, which means they're probably all in COG (reference)