Unable to select a categoric/factor variable

[skanskan]

Hello

I would like to create a plot using lattice with your addin.

xyplot(yy~xx,data=mydata)

xx is a numeric variable.
yy is a categoric variable, coded as a factor, with values such as low, medium, high.

I've tried to use "Lattice scatter plot" to create the plot but I'm unable to select the yy variable, I guess the reason is it's a categoric variable.

Could add that option too, plase?

[homerhanumat]

I think that you are thinking of lattice's stripchart() function, as in:

stripchart(Sepal.Length~ Species, data = iris, vertical = TRUE, pch = 19)

Would not the boxplot addin serve your purpose at least as well?