Message-ID: <3C93DC3B.7960.11A43CD@localhost>
Date: 2002-03-17T04:58:51Z
From: ggrothendieck@yifan.net
Subject: apply problem
> data(iris)
# iris3 is first 3 rows of iris
> iris3 <- iris[1:3,]
# z compares row 1 to each row of iris3 and is correctly
computed
> z <- c(F,F,F)
> for(i in seq(z)) z[i] <- identical(iris3[1,],iris3[i,])
> z
[1] TRUE FALSE FALSE
# this should do the same but is incorrect
> apply(iris3,1,function(x)identical(x,iris3[1,]))
1 2 3
FALSE FALSE FALSE
What's wrong here?
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