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superimpose density line over hist

Albert Vilella 
Hi all,

I'm trying to superimpose a rchisq density line over a histogram with
something like:

hist(alnlength)
lines(density(rchisq(length(alnlength), 4)),col="red")

But the rchisq line won't appear anywhere,

Anyone knows what I am missing here?

Thanks in advance,

    Albert.

Thread (8 messages)

Albert Vilella superimpose density line over hist Dec 13 Dimitris Rizopoulos superimpose density line over hist Dec 13 Romain Francois superimpose density line over hist Dec 13 (Ted Harding) superimpose density line over hist Dec 13 (Ted Harding) superimpose density line over hist Dec 13 Albert Vilella superimpose density line over hist Dec 13 Martin Maechler superimpose density line over hist Dec 14 Romain Francois superimpose density line over hist Dec 14