Plot geographic distribution of samples

[fritzo]

Edgar et al. (2022) use Amazon Location Service to convert place names to (lat,long) pairs. We could do something similar to visualize the global distribution of samples.

[dpark01]

@tomkinsc has also used the Google Maps API for this purpose before, it’s pretty straightforward.

That said, if you’re using nextstrain open data sets or their ingest/ETL scripts for restricted data sets, the location metadata should already map nicely to this table: https://github.com/nextstrain/ncov/blob/master/defaults/lat_longs.tsv