[R] CDF of a gamma distribution

Francisco J. Zagmutt gerifalte28 at hotmail.com
Wed Aug 15 00:16:32 CEST 2007


pgamma(q=50,shape=5.1379,rate=0.017541)

Francisco




Jake Verschuyl wrote:
>  
> 
> Hi there,
> 
>  
> 
> I have some bird flight height data that follows a gamma distribution.  The
> data (x) goes from 0 to 700 meters (n=1055).  The calculated parameters
> calculated from the fitdistr(x) are (shape = 5.1379, rate = 0.017541), and
> therefore the scale (1/rate) = 57.00929.  I would like to calculate the
> cumulative density (or proportion of the curve) of the function at x= 50
> meters.  
> 
>  
> 
> Is that possible, and are there any functions that will help?  
> 
> Thanks!
> 
>  
> 
>  
> 
> Jake Verschuyl
> Ecologist
> 
> P.O. Box 2561, Mount Vernon, WA 98273
> 
> Tel: 360.899.5156
> 
> Fax: 360.899.5146 
> 
> P Please consider the environment before printing this email.
> 
>  
> 
> 
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> 
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