[R] Hmisc xYplot won't do conditioning on factors?

From: Ivan Adzhubey <iadzhubey_at_rics.bwh.harvard.edu>
Date: Tue, 26 Feb 2008 19:47:14 -0500


I am trying to replace (lattice) standard xyplot with xYplot variant from Hmisc package to be able to add error bars to my plots. However, this does not work, e.g:

d <- data.frame(

	SKU=gl(3, 1, 21, labels=c("a", "b", "c")), 
	Weekday=gl(7, 3, 21), 

xyplot(QCRate ~ Weekday | SKU, data=d)

(this plots nice 3 panels as per a,b,c conditionals)

> xYplot(QCRate ~ Weekday | SKU, data=d)
Error in Summary.factor(1:7, na.rm = TRUE) :   range not meaningful for factors

Is there a workaround?


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