R version 2.15.3 (2013-03-01) -- "Security Blanket"
Copyright (C) 2013 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: i686-pc-linux-gnu (32-bit)

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> x <- array(list(5,"f",35,-2.67,10,"f",44,9.67,14,"f",20,-6,16,"f",38,28.33,17,"f",43,12,19,"f",32,-11.3,21,"f",24,3,22,"f",59,-4.67,23,"f",41,-5,26,"f",44,2.33,27,"f",66,37.67,28,"f",40,7.5,29,"f",24,5,32,"f",60,30,33,"f",35,15.33),dim=c(4,15),dimnames=list(c('Childcode','Gender','BVPT','RAD'),1:15))
>  y <- array(NA,dim=c(4,15),dimnames=list(c('Childcode','Gender','BVPT','RAD'),1:15))
>  for (i in 1:dim(x)[1])
+  {
+  	for (j in 1:dim(x)[2])
+  	{
+  		y[i,j] <- as.numeric(x[i,j])
+  	}
+  }
There were 15 warnings (use warnings() to see them)
> par3 = 'TRUE'
> par2 = ''
> par1 = ''
> ylab = 'BVPT Test Score'
> xlab = 'Reading age deficiency score'
> main = 'Vocabulary skill change'
> par3 <- 'TRUE'
> par2 <- ''
> par1 <- ''
> #'GNU S' R Code compiled by R2WASP v. 1.2.291 ()
> #Author: aston2
> #To cite this work: Ian E. Holliday, 2012, Simple Linear Regression (v1.0.5) in Free Statistics Software (v$_version), Office for Research Development and Education, URL http://www.wessa.net/Ian.Holliday/rwasp_Simple%20Regression%20Y%20~%20X.wasp/
> #Source of accompanying publication: 
> #
> cat1 <- as.numeric(par1)
> cat2<- as.numeric(par2)
> intercept<-as.logical(par3)
> x <- t(x)
> xdf<-data.frame(t(y))
> (V1<-dimnames(y)[[1]][cat1])
[1] NA
> (V2<-dimnames(y)[[1]][cat2])
[1] NA
> xdf <- data.frame(xdf[[cat1]], xdf[[cat2]])
> names(xdf)<-c('Y', 'X')
Error in names(xdf) <- c("Y", "X") : 
  'names' attribute [2] must be the same length as the vector [0]
Execution halted