[R] locfit and memory allocation

[Liaw, Andy]

The code sniplet you provided is nowhere near correct or sufficient for
anyone to help.  Please (re-)read the posting guide and try again.

Andy

> From: Mike Hickerson
> 
> Hello
> 
> I am getting memory allocation errors when running a function 
> that uses  
> locfit within a for loop.  After 25 or so loops, it gives this error.
> 
> "Error: cannot allocate vector of size 281250 Kb"
> 
> Running on linux cluster with a Gb of RAM.  Problem never 
> happens on my  
> OS X (less memory).  The total data is 130 cols by 5000 rows
> The first 129 cols are response variables, the 130th is the parameter
> The function fits a local regression between the 129 
> variables in the  
> ith row of m[ ] to the 129 variables in 5000 rows after m was 
> fed into  
> 130 different vectors called Var1, .....Var129, and PARAMETER.
> 
> array <- scan(("DataFile"),nlines=5000)
>   m<-matrix(array,ncol=130,byrow=T)
> 
> for (i in 1:200)
> {
> result<-  
> function(m[i,c(1,....,129)],PARAMETER,cbind(Var1,...,Var129)se
> q(1,len=50 
> 00),F)
> }
> 
> Any ideas on how to avoid this memory allocation problem would be  
> greatly appreciated.  Garbage collection? (or is that too slow?)
> 
> Many Thanks in Advance!
> 
> Mike
> 
> 
> 
> 
> Mike Hickerson
> University of California
> Museum of Vertebrate Zoology
> 3101 Valley Life Sciences Building
> Berkeley, California  94720-3160  USA
> voice 510-642-8911
> cell: 510-701-0861
> fax 510-643-8238
> mhick at berkeley.edu
> 
> 	[[alternative text/enriched version deleted]]
> 
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