[R] Plot numeric and categorical variable

[Uwe Ligges]

On 05.12.2011 23:22, Juliet Ndukum wrote:
> My data consists of numeric (yy) and categorical (xx) variables, as shown below.
>> xx = c(rep("C", 5), rep("D",5))>  xx [1] "C" "C" "C" "C" "C" "D" "D" "D" "D" "D">  yy = rnorm(10, 0, 4)>  yy [1]  2.7219346 -3.7142481  6.8716534 -0.9352463  0.4901249  3.8113247 [7] -2.6602041  1.7714471  4.7298233  0.8848188
>> xx1 = as.integer(as.factor(xx))>  plot(xx1, yy, ylim = c(-13.5, 4), col="blue")
> I have attached the plot above  as plot1
> I wish to generate a scatter plot of the data such that instead of 1 it prints C, and instead of 2, it prints D on the x- axis (see plot1 attached).
> How could I possibly go about this, let me know. Any help will be greatly appreciated.
> Thanks in advance for your help,JN

Sounds like homework?!
Anyway, see ?par and ?axis to answer your question directly or ?boxplot 
more implicitly...

Best,
Uwe Ligges



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