r - Missing color when plotting a raster -


when try plotting raster object, r gives plot without colors. 

library(raster) r.base <- raster(ncol=40,nrow=40,xmn=-74,xmx=-34,ymn=-34,ymx=6) wgs<-"+proj=longlat +datum=wgs84 +ellps=wgs84 +towgs84=0,0,0" projection(r.base) <- wgs set.seed(0) values(r.base) <- runif(ncell(r.base)) plot(r.base)

code runs on windows server r3.3.0, resulting in: plot without color

on private computer plot funciton works fine, resulting intented output: plot color


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