[R-sig-Geo] sp

Francesco Perugini |r@nce@co@perug|n| @end|ng |rom y@hoo@|t
Thu May 16 14:55:03 CEST 2019

Dear all,I'm not very familiar with R. 
I'm tying to use this code I've written months ago. At that time it was working but now it is not.
coord <- coordinates(columbus)and get this messageError in (function (classes, fdef, mtable)  : 
  unable to find an inherited method for function ‘coordinates’ for signature ‘"sf"’I've tried to also calllibrary(sf)but got the same error.I was wondering why?Thanks a lot.Francesco

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