张志杰 wrote:
> 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.
> --
Hi John,
You can do this with the "rescale" function in the plotrix package.
newx<-rescale(x,c(0,1))
newy<-rescale(y,c(0,1))
Jim
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