How to plot Subset data without the unselected data in R -


i want plot graph of (see below), after subsetting, r plotting variables, data of selected ones.

test<-subset(orchardsprays,treatment == "a") plot(test$treatment, test$decrease)

so there way plot variable want without deleting in original data frame?

i don't want this! enter image description here

you want droplevels:

test <- subset(orchardsprays, treatment == "a") test <- droplevels(test) plot(test$treatment, test$decrease)

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