> On Nov 5, 2015, at 3:59 PM, Axel Urbiz <[email protected]> wrote:
>
> Hello,
>
> Is there a way to avoid the warning below in dplyr.
There is an option that lets you turn off warnings. There also a wrapper
function called, not surprisingly, … `suppressWarnings`. This is all descibed
on:
?warning
—
David.
> I’m performing an operation within groups, and the warning says that the
> factors created from each group do not have the same levels, and so it
> coerces the factor to character. I’m using this inside a package I’m
> developing. I’d appreciate your recommendation on how to handle this.
>
> library(dplyr)
>
> set.seed(4)
> df <- data.frame(pred = rnorm(100), models = gl(2, 50, 100, labels =
> c("model1", "model2")))
>
> create_bins <- function (pred, nBins) {
> Breaks <- unique(quantile(pred, probs = seq(0, 1, 1/nBins)))
> bin <- data.frame(pred = pred, bin = cut(pred, breaks = Breaks,
> include.lowest = TRUE))
> bin
> }
>
> res_dplyr <- df %>% group_by(models) %>% do(create_bins(.$pred, 10))
> Warning message:
> In rbind_all(out[[1]]) : Unequal factor levels: coercing to character
>
> Thank you,
> Axel.
>
>
> [[alternative HTML version deleted]]
>
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