R version 2.12.0 (2010-10-15)
Copyright (C) 2010 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: i486-pc-linux-gnu (32-bit)

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> x <- array(list(4,'SMK',5,'SMK',3,'SMK',4,'SMK',5,'SMK',3,'SMK',7,'SMK',5,'SMK',6,'SMK',3,'SMK',2,'SMK',4,'SMK',5,'SMK',2,'SMK',3,'SMK',6,'SMK',4,'SMK',4,'SMK',6,'SMK',2,'SMK'),dim=c(2,20),dimnames=list(c('Rating','Smoker'),1:20))
>  y <- array(NA,dim=c(2,20),dimnames=list(c('Rating','Smoker'),1:20))
>  for (i in 1:dim(x)[1])
+  {
+  	for (j in 1:dim(x)[2])
+  	{
+  		y[i,j] <- as.numeric(x[i,j])
+  	}
+  }
There were 20 warnings (use warnings() to see them)
> par5 = '2'
> par4 = '1'
> par3 = '0'
> par2 = 'TRUE'
> par1 = '3'
> ylab = 'ratings'
> xlab = 'smoker'
> main = 'Smoker's ratings of a hot Vindaloo curry'
Error: unexpected symbol in "main = 'Smoker's"
Execution halted