Dear Rusers, I want to standardise the values of x/y coordinates to the unit square, i.e. make the x-values all lie within [0,1] and all the y-values lie within [0,1] in the bottom example.  I had thought to use scale() function to do it, but it seems that it's used to standardise a variable and the scaled value was not within [0,1]. OR, i can divide x/y-values by their maximum value to get it.  I'm not sure about it.#Example data data <- matrix(1:10, nc=2)
data<-as.data.frame(data)
names(data)<-c('x','y')> data
  x  y
1 1  6
2 2  7
3 3  8
4 4  9
5 5 10  I'd appreciate your help. 
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Kind Regards,
John Chang
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