Hello,
I have two column in a data.frame and I want to use some function for comparaison. For example intersect(). Because the length of the column are not the same, there is NA in there. However, when I use intersect, NA is considered that I do not want.
Example:
head(df) A B 1 cat dog 2 dog elephant 3 duck 4
intersect(df$A,df$B) [1] "dog" NA
Hope somebody can help me Best Antonin
You could remove the rows where A and B both contain NA values and then run intersect().
A
B
NA
intersect()
df <- data.frame(A = c("cat", "dog", "duck", NA), B = c("dog", "elephant", NA, NA)) df_new <- subset(df, !is.na(A) & !is.na(B)) intersect(df_new$A, df_new$B) #> [1] "dog"
Created on 2020-05-11 by the reprex package (v0.3.0)
Thank you for taking the time to answer. Best
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