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32768
2011 Jan 14
1
Question about scatterplot in package car
I am getting an error message from scatterplot:
> library(car)
> scatterplot(Prestige$income~Prestige$type)
Error in Summary.factor(c(2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, :
range not meaningful for factors
In addition: Warning message:
In Ops.factor(x[floor(d)], x[ceiling(d)]) : + not meaningful for factors
>
The command does output the kind of graph that I want (boxplots).