Subsetting several different from a categorical variable in R

Question

I have an assignment where I need to use the subset() function on the iris dataset in R. Specifically, I have to work with only two of the three Species variables, setosa, virginica, versicolor. Somehow, I cant get the subset function to pick more than one of these if I attempt to make a new dataframe where I only have setosa and virginica. How do I subset more than one of a categorical variable?

Thank you so much for any help.

Does this answer your question? [Getting rows given multiple values of a column in R](https://stackoverflow.com/questions/29266006/getting-rows-given-multiple-values-of-a-column-in-r) — davidf, Nov 22 '21 at 14:05

score 0 · Answer 1 · answered Nov 22 '21 at 14:03

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Try using the %in% keyword:

library(datasets)
data(iris)
subset(iris, iris$Species %in% c("setosa", "versicolor"))

answered Nov 22 '21 at 14:03

davidf

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Thank you, that is perfect! I guess I didn't write it out the correct way. Really appreciate it. :) – Christine Emilie Tonne Artak Nov 22 '21 at 14:17

score 0 · Answer 2 · answered Nov 22 '21 at 14:04

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You can write a subset where you specify which species from the variable name "Species" you want

dfSetosaVirginica <- subset(iris , Species %in% c("setosa","virginica"))

answered Nov 22 '21 at 14:04

Yacine Hajji

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Thank you, it works! That was efficient, thanks again! – Christine Emilie Tonne Artak Nov 22 '21 at 14:17

Subsetting several different from a categorical variable in R

2 Answers2