google maps - R code ggplot/googlemaps -

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google maps - R code ggplot/googlemaps -

i trying work (the links below same thing really) code included @ bottom of first link.

looks google maps part doesn't work, know why? looks text overlay doesn't work, why?

http://workfeed.baileyplex.com/2013/02/maps-in-r-choropleth-maps.html

http://www.r-bloggers.com/maps-in-r-choropleth-maps/

http://www.milanor.net/blog/?p=634

originally, couldn't work found post on here reinstalling several packages , got me point.

r google-maps ggplot2

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