[R] ggmap warning

[Chichi Shu]

Dear Listers



I¡¯ve been using ggmap package to produce crime Heat map. But I¡¯ve noticed the following warning message when executing my code: 



In loop_apply(n, do.ply) :

  Removed 4945 rows containing non-finite values (stat_density2d).



I¡¯ve googled this message but I couldn¡¯t find any good answers.



Is this related to ggmap package or one of its depending package?



What does it mean?



Thanks!

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