[R] cdf of the standard normal distribution

[Liu.Chunhua@epamail.epa.gov]

Never mind. I have figured out a way to do it.
Here it is:

  if (fits$link == "probit") {
     pct0 <- integrate(dnorm, -Inf, a)
        pct0 <- pct0[[1]]}

THanks any way for your answers.

Charlie Liu




                                                                                                                   
                    Roger Peng                                                                                     
                    <rpeng at stat.u        To:     Chunhua Liu/RTP/USEPA/US at EPA                                      
                    cla.edu>             cc:     "r-help at stat.math.ethz.ch" <r-help at stat.math.ethz.ch>, Jeff       
                                         Gift/RTP/USEPA/US at EPA                                                     
                    02/19/02             Subject:     Re: [R] cdf of the standard normal distribution              
                    02:13 PM                                                                                       
                                                                                                                   
                                                                                                                   




Use the pnorm() function.

-roger
_______________________________
UCLA Department of Statistics
rpeng at stat.ucla.edu
http://www.stat.ucla.edu/~rpeng

On Tue, 19 Feb 2002, Liu.Chunhua at epamail.epa.gov wrote:

> Dear Experts,
>
> I need to calculate the cdf of the standard normal distribution, i.e.
> H(x) = 1/sqrt(2*pi) integral(exp(-z^2/2) dz), where z is b/w -infi to
> infi.
> I know there should be a way to do it in R, but did not know to do it.
> I'd appreciate any help you could offer.
>
> Charlie Liu
> Graduate student intern at EPA/ECO
>
>
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