[Rd] bug report: inaccurate error message for stats::chisq.test

Ant F @ntoine@f@bri @ending from gm@il@com
Tue Aug 21 16:31:13 CEST 2018


`stats::chisq.test` checks that x and y each have at least 2 levels AFTER
filtering on complete cases.

It makes sense but the error message is misleading : “'x' and 'y' must have
at least 2 levels”

Here’s how to reproduce the issue :

    x <- structure(c(1L, 1L, 1L, 2L, 1L, 2L), .Label = c("0001", "0003"),
class = "factor")

    y <- structure(c(1L, 2L, 2L, NA, 2L, NA), .Label = c("0001", "0002"),
class = "factor")


    # Error in chisq.test(...) : 'x' and 'y' must have at least 2 levels

In this case they do have 2 levels.

Best regards,



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