Hi all,I have a data frame which have a column named COUNTRY, I want to merge
my data frame with world map from ggmap to plot it on world map, but when I
merge my data frame with world map I get 0 observations! Here is my main data
frame (mydata):
'data.frame': 269265 obs. of 470 variables:
$ Serial : num 41568 41568 41568 41568 41568 ...
$ Duration : num 218 351 250 200 375 91 236 250 236 322 ...
$ COUNTRY : Factor w/ 27 levels "","AU","BA","BE",..: 8 8 8 8 8
and here is the command for merging with world map:
word_map=merge(world_map,mydata,by.x="region",by.y="country")
str(world_map)
'data.frame': 0 obs. of 475 variables:
$ Serial : num
$ Duration : num
$ COUNTRY : chr
how should I correct this world_map structure to have all my observations? And
I could not use rworldmap in R 3.2.3,anyone used this library in version 3.2.3?
Thanks for any help.
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