Module #11 Assignment

 3/24/34

This week, we are tasked with debugging R code. 

First, I copied the bugged code into RStudio in order to see the error it returns. I also installed and loaded the "outliers" package.

I also ran debug(tukey_multiple):

> debug(tukey_multiple)
> tukey_multiple(x)
debugging in: tukey_multiple(x)
debug at #1: {
    outliers <- array(TRUE, dim = dim(x))
    for (j in 1:ncol(x)) {
        outliers[, j] <- outliers[, j] && tukey.outlier(x[, j])
    }
    outlier.vec <- vector(length = nrow(x))
    for (i in 1:nrow(x)) {
        outlier.vec[i] <- all(outliers[i, ])
    }
    return(outlier.vec)
}
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After further investigation, I found that the && operator is used when instead, & operator should be used. && only evaluates the second expression if the first one is true.