For some reason on this specific dataset the CI of precision with a threshold of 1 is NA.
When calculating the ci.coords with several thresholds, the following error occurs:
> ci.coords(pROC_obj_with_ci, x=c(.5, 1), ret="precision", transpose=TRUE)
Error in apply(sapply(perfs, c), 1, quantile, probs = c(0 + (1 - conf.level)/2, :
dim(X) must have a positive length
In addition: Warning message:
In ci.coords.roc(pROC_obj_with_ci, x = c(0.5, 1), ret = "precision", :
NA value(s) produced during bootstrap were ignored.
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