Hello folks:

I have a data frame which includes two numeric vectors: "Pa1" and "Ingr" (which represents income).  I run the following code on the R console:

ingreso <- factor(ifelse(Ingr<=3000,"bajo","alto"))
tapply(Pa1,ingreso,summary)
boxplot(Pa1~ingreso)

and it works fine.  However, when I "Sweave" through an rnw file containing that code, R gives me the following error:

Error:  chunk 19 (label=cod3.19) 
Error in object[[i]] : object of type 'closure' is not subsettable

What's going on here?

Thanks in advance,
jlrp


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