[R] Help with function "fitdistr" in "MASS"

[Bernardo Rangel Tura]

On Sat, 2010-01-02 at 23:20 -0800, Saji Ren wrote:
> Hi, R users:
> 
> I want to fit my data into a normal distribution by using the command
> "fitdistr" in "MASS".
> I changed my data class from "ts" to "numeric" by
> 
> >class(mydata)="numeric"
> 
> but after using "fitdistr", I got the result below
> 
> >fitdistr(mydata,"normal")
>   mean    sd 
>   NA     NA  
>  (NA)   (NA) 
> 
> the help doc of "fitdistr" does not mention anything about that, thus I need
> your help.
> 
> Thank you in advanced,
> Saji from Shanghai

Hi Sajj,

You hava NA in your data

try: fitdistr(na.exclude(mydata),"normal")

-- 
Bernardo Rangel Tura, M.D,MPH,Ph.D
National Institute of Cardiology
Brazil