Hello, A workaround could be
y <- addNA(y) chisq.test(x,y) But this implies that the user was aware of the reason why the error. Hope this helps, Rui Barradas On 21/08/2018 15:31, Ant F wrote:
Hi, `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") chisq.test(x,y) # Error in chisq.test(...) : 'x' and 'y' must have at least 2 levels In this case they do have 2 levels. Best regards, Antoine[[alternative HTML version deleted]] ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
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