Displaying 4 results from an estimated 4 matches for "qdist".
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2011 Aug 22
1
d, p, q, r - What are the math relations with each other of this functions?
Hi all,
Using the exponential distribution to exemplify: The dexp function is
the PDF (1) and pexp is the CDF (2), that is obtained integrating the
PDF. How can I get the qexp and the rexp? Considering that I have the
PDF, how this two are mathematically related to the PDF?
(1) ke^{-kx}
(2) 1-e^{kx}
Thanks in advance.
2007 Mar 15
1
Creating q and p functions from a self-defined distribution
Hello all,
I am fishing for some suggestions on efficient ways to make qdist and
pdist type functions from an arbitrary distribution whose probability
density function I've defined myself.
For example, let's say I have a distribution whose pdf is:
dRN <- function(x,d,v,s)
# d, v, and s are parameters
return(d/x^2/sv/sqrt(2*pi)*exp(-(d-v*x)^2/2/(sv^2*x^2))...
2007 Mar 15
0
Creating q and p functions from a self-defined distribut
>>> ted.harding at nessie.mcc.ac.uk 15/03/2007 13:26:52 >>>
On 15-Mar-07 12:09:42, Eli Gurarie wrote:
> Hello all,
>
> I am fishing for some suggestions on efficient ways to make qdist and
> pdist type functions from an arbitrary distribution whose probability
> density function I've defined myself.
Ted Harding accurately said there is unliekly to be an efficient general answer.
However, if you want a dreadfully inefficient but very general answer, could you use a n...
2011 Jul 30
2
NAN problem
Hi All,
Did anyone else have a problem like this? I am sorry if its a small issue, I
seem to not understand what to do to get rid of this error.
> Sigma
[1] 0.1939025
> MuRest
[1] 8.512772
> TauZero
[1] 0.1
> curve(qlnorm(x,-TauZero+MuRest, Sigma,lower.tail=F), xlim=c(4000,9000),
ylim=c(0,.99),xlab="", ylab="")
Warning message:
In qlnorm(p, meanlog, sdlog,