On 20/08/2013 03:35, Gallon Li wrote:
x=rchisq(100,1)
density(x)
the density plot will give density for negative part also. of course I can
truncate the plot to only view the non-negative part.
I wonder if there is a program to compute density for a user-specified
range, in this case, only [0, infinity).
Yes, but it will not be using the same method as density. One place to
look is logspline() in package polspline, but please learn about the
methodology of density estimation before you use any of these.
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