CODEWITHSUNDEEP
rdplyr
Amer
Amer

Reputation: 2251

Using filter in dplyr package

I am not sure what I am doing wrong. I have a data frame than contains more than one study. I want to filter STUDY number 7, 9, 120. I am using filter in the dplyr package like this:

df <- filter(data, STUDY==7, STUDY==9, STUDY==100)

This gives me a ZERO observations data frame. When I filter only one STUDY, it works. What is the right way to write it in order to filter a combination of studies?

Upvotes: 2

Views: 190

Answers (1)

akrun
akrun

Reputation: 887851

Try

library(dplyr)
data %>%
    filter(STUDY %in% c(7,9, 100))

Or

data %>%
     filter(STUDY==7|STUDY==9|STUDY==100)

data

set.seed(24)
data <- data.frame(STUDY=sample(c(0,5,7,9,100,150,200),
                          25, replace=TRUE), Val=rnorm(25))

Upvotes: 7

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