Hello,

someone know if it is possible to use R to calculate distance by sea
between two geographic coordinates? I have many points in the sea and I
want to create a matrix using R of the length of trajectories that pass
only trough sea.

Thanks

Giulia

-- 
Giulia Fassio
Animal Biology PhD student
Dept. of Biology and Biotechnology C. Darwin
Sapienza University of Rome
Piazzale Aldo Moro 5, 00185 Rome, Italy
Mobile: +39 328 1214497
giuliafassio@gmail.com

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