search for: micay

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2009 Oct 26
1
issue with levels of a factor after subsetting
...he following code: #The first 4 Rivers >car4<-car[car$Rio%in%c("Magdalena","Atrato","San Juan","Mira"),] #The other 39 >car5<-car[!car$Rio%in%c("Magdalena","Sin?","Atrato","San Juan","Mira","Micay", "Patia","Canal del Dique","Iscuand?","Guapi"),] And I plot the two graphs using: xyplot(Valor~A?o|Var,groups=Rio,data=car4[car4$Var%in%c("NT","PO4","HDD","CTE", "SST","OCT"),],layout=c(2,3),...