[R] flow map lines between point pairs (latitude/longitude)

[vioravis]

I am working on a similar problem. I have to add two columns: one containing
the US state to which the origin belongs and another one to add the state in
to which destination belongs. All I have is the latitude and the longitude
of the origin and destination. Are there any packages in R that can do
this??? Thank you.

Ravi

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