Question

I have a dataframe in R with three variables named for example df$V1, df$V2, df$V3.
df$V1 and df$V2 are both factors, while df$V3 is numeric.

df <- data.frame(
  V1 = letters[1:4],
  V2 = rep(LETTERS[1:3], each = 4),
  V3 = 1:12
)

I am looking for a way to create a table that contains the values in df$V3, with df$V1 as the rows, and df$V2 as the columns.

I tried variations on table, but didn’t get anywhere.
Perhaps someone could help,
Thanks in advance,
Davy.

Answer 1

This is an alternative to table:

xtabs(V3 ~ V1 + V2, df)