you also don't need to do a merger if you use a base `geom_map()` layer with the polygons and another using the fill (or points, lines, etc).
On Fri, Jun 17, 2016 at 5:08 PM, MacQueen, Don <macque...@llnl.gov> wrote: > And you can check what David and Jeff suggested like this: > > intersect( df$COUNTRY, world_map$region ) > > If they have any values in common, that command will show them. (Note that > I said values in common, not countries in common.) > > WARNING: > It appears that you have each country appearing more than once in both of > the data frames. Even if the country names were spelled the same (which > they are not in the first few rows), I would not care to predict the > outcome of a many-to-many merge. It probably won't make sense for showing > the data on a map. > > -Don > > -- > Don MacQueen > > Lawrence Livermore National Laboratory > 7000 East Ave., L-627 > Livermore, CA 94550 > 925-423-1062 > > > > > > On 6/17/16, 1:06 PM, "R-help on behalf of ch.elahe via R-help" > <r-help-boun...@r-project.org on behalf of r-help@r-project.org> wrote: > >>Hi all, >>I want to use world map in ggplot2 and show my data on world map. my df >>is: >> >> >> $ COUNTRY : chr "DE" "DE" "FR" "FR" .. >> >> $ ContrastColor : int 9 9 9 9 13 9 9 9 9 .. >> >> $ quant : Factor w/ 4 levels "FAST","SLOW",..I need to >>merge my df with world_map data which is like this: >> >> >> world_map=map_data("world") >> data.frame': 99338 obs. of 6 variables: >> $ long : num -69.9 -69.9 -69.9 -70 -70.1 ... >> $ lat : num 12.5 12.4 12.4 12.5 12.5 ... >> $ group : num 1 1 1 1 1 1 1 1 1 1 ... >> $ order : int 1 2 3 4 5 6 7 8 9 10 ... >> $ region : chr "Aruba" "Aruba" "Aruba" "Aruba" ... >> $ subregion: chr NA NA NA NA ... >>but by merging my df with world map data I get a data frame with zero >>observation in it,I use this command for merging: >> >> >> world_map=merge(world_map,df,by.x="region",by.y="COUNTRY") >> str(world_map) >> >> 'data.frame': 0 obs. of 133 variables: >> $ region : chr >> $ long : num >> $ lat : num >> $ group : num >> $ order : int >> $ subregion : chr >>does anyone know what is the problem of this merging that I am currently >>using? >>thanks for any help! >>Elahe >> >>______________________________________________ >>R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >>https://stat.ethz.ch/mailman/listinfo/r-help >>PLEASE do read the posting guide >>http://www.R-project.org/posting-guide.html >>and provide commented, minimal, self-contained, reproducible code. > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.