[R] assigning NA's

[Warnes, Gregory R]

> -----Original Message-----
> From: Patrick Buetzberger [mailto:patrick at giub.unibe.ch]
> Sent: Tuesday, January 22, 2002 12:36 PM
> To: r-help at lists.R-project.org
> Subject: [R] assigning NA's
[...]

> I've tried to use the same command for assigning NA's to 
> missing values
> (=-999)  in each object created with above loop, like this:
> for(i in seq(1,nfn,1)){
>  assign(paste("f", i, sep = "")[paste("f", i, sep = "") < -500.], NA)
> }

Probably the simplest solution is to use a temporary object inside your
first loop and do the NA handling there.  Something like:

	for(i in seq(1,nfn,1)){
		fin<-
paste("/home/klimet/patrick/LAEGEREN/NEBEL/FOGEVENT2000/",fn[i],sep="")

	 	dat<- as.matrix(read.table(fin,skip=1))
		dat[dat< -500.] <- NA

		assign(paste("f", i, sep = ""), dat)
	}
	

If you really need to keep the loops separate, you can use 'get' to grab the
contents of each object, make the substitution, and then use 'assign' again
to write it out:


	for(i in seq(1,nfn,1)){
	
	 	dat<- get( paste("f", i, sep = "") )
		dat[dat< -500.] <- NA
		assign(paste("f", i, sep = ""), dat)
	}

-Greg


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