[R] Comparing density plots using same axes or same axes scale

[Rui Barradas]

Hello, again.

I forgot, but the subject line also says "same axes", not just same axes 
scale.
If you want all densities on the same graph, use ?matplot (matrix plot).

Rui Barradas
Em 27-09-2012 02:08, Rui Barradas escreveu:
> Hello,
>
> Something like this?
>
> sag <- matrix(rnorm(1e3 * 9), ncol = 9)
>
> d.list <- apply(sag, 2, density)
> xrange <- range(sapply(d.list, function(d) range(d$x)))
> ymax <- max(sapply(d.list, function(d) max(d$y)))
>
> op <- par(mfrow=c(3,3))
> for(i in 1:9)
>     plot(d.list[[i]], xlim = xrange, ylim = c(0, ymax))
> par(op)
>
>
> Hope this helps,
>
> Rui Barradas
> Em 27-09-2012 01:53, Meredith Ballard LaBeau escreveu:
>> Good Evening-
>>    I have a set of nine scenarios I want to plot to see how the 
>> distribution
>> is changing, if one tail is getting larger in certain scenario, 
>> currently I
>> am using this code
>>
>>
>> colnames<-dimnames(sag_pdfs)[[2]]
>>
>> par(mfrow=c(3,3))
>>
>> for(i in 1:9) {
>>
>> d<-density(sag[,i])
>>
>> plot(d,type="n", main=colnames[i])
>>
>> polygon(d,col="red",border="grey")}
>>
>> where sag is a 7305x9 double matrix and 9 different scenarios. I want 
>> to be
>> able to compare the distribution using the same axes scale.
>> Can anyone help?
>>
>> Thanks
>> Meredith LaBeau
>>
>
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