R help - Aug 2007 - CDF of a gamma distribution

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.

 


	[[alternative HTML version deleted]]

On 15/08/2007, at 9:53 AM, Jake Verschuyl wrote:
> 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?
?pgamma

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Attention:\ This e-mail message is privileged and confidenti...{{dropped}}

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.
> 
>  
> 
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
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>