On 12/10/2016 12:59 PM, Adrian Johnson wrote:

Thanks Duncan. I am sorry I cannot scale second row (d[2,]). I was looking for a way to plot d[2,] values next to d[1,] with a right side axis=4 on right side. -2,-1,0,1,2

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`That doesn't really make graphical sense, but you can use any`

`transformation you like, not just a rescaling. If you want -2 for the`

`2nd row to be the same as 0 on the first row, just work out the`

`transformation that achieves that, and use it.`

Duncan Murdoch

thanks Adrian On Wed, Oct 12, 2016 at 12:42 PM, Duncan Murdoch <murdoch.dun...@gmail.com> wrote: > On 12/10/2016 12:20 PM, Adrian Johnson wrote: >> >> Dear group, >> I have been struggling to barplot two different measurements from one >> subject. These two measures differ in range. I want to plot row 1 >> axis on left side and row 2 values on right side. >> >> For a given column I want to plot GN and CN next to each other. >> >> my dput code is below >> : >> >> structure(c(112L, 0L, 579L, 1L, 131L, 1L, 2234L, 2L, 2892L, 1L, >> 528L, 0L, 582L, 2L), .Dim = c(2L, 7L), .Dimnames = list(c("GN", >> "CN"), c("DC5", "DC8", "DC14", "DC18", "DC19", "DC20", "DC23" >> ))) >> >> >> As you can see: >> DC5 DC8 DC14 DC18 DC19 DC20 DC23 >> GN 112 579 131 2234 2892 528 582 >> CN 0 1 1 2 1 0 2 >> >> GN values are range from 100 - 3000 >> while CN are always -2 or -1 or 0 or 1 or 2 >> >> Also I cannot log GN values and plot because a difference in 100 units >> also matters in my experiment. >> >> Any help would be greatly appreciated. > > > I would simply rescale one row and add a second axis. For example, if d > holds your matrix: > > scale <- max(d[1,])/max(d[2,]) > adjusted <- d > adjusted[2,] <- scale*adjusted[2,] > barplot(adjusted, beside = TRUE) > ticks <- pretty(d[2,]) > axis(side = 4, at = ticks*scale, labels = ticks) > > Duncan Murdoch > >

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