Hi John,
I don't know how well it will handle your truncated left distribution, but I
use the function Mclust from package mclust to fit a mixture of normal
distribution and it works very well.
Denis
> Le 2015-06-30 à 22:22, John Sorkin <jsor...@grecc.umaryland.edu> a écrit :
>
> I am trying to model the mixture of two normal distributions, where x values
> are in the range of zero to some positive value. I know about mixtools and
> would use it save for the fact that the the y values from the normal
> distribution corresponding to the lower values of x (i.e. from zero to x/n)
> are from what appears to be a left-truncated normal distribution (i.e. the y
> values are all from the upper half of a normal distribution). The y values
> from higher values of x (i.e. from x/n to x) all appear to come from a normal
> distribution. Can someone suggest how to fit two normal distributions where
> one of the two distributions is left-truncated? Can this be done using
> mixtools?
> Thank you,
> John
>
> John David Sorkin M.D., Ph.D.
> Professor of Medicine
> Chief, Biostatistics and Informatics
> University of Maryland School of Medicine Division of Gerontology and
> Geriatric Medicine
> Baltimore VA Medical Center
> 10 North Greene Street
> GRECC (BT/18/GR)
> Baltimore, MD 21201-1524
> (Phone) 410-605-7119
> (Fax) 410-605-7913 (Please call phone number above prior to faxing)
>
>
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