[R] data-management: Rowwise NA

moleps moleps2 at gmail.com
Thu Jun 3 21:39:28 CEST 2010


-Any- was my fix... Appreciate it.

//M


On 3. juni 2010, at 21.33, Phil Spector wrote:

> ?any
> 
> Not really a reproducible answer, but I think you're looking
> for
> 
> apply(tes[,sam],1,function(x)any(is.na(x)))
> 
> 
> 					- Phil Spector
> 					 Statistical Computing Facility
> 					 Department of Statistics
> 					 UC Berkeley
> 					 spector at stat.berkeley.edu
> 
> 
> On Thu, 3 Jun 2010, moleps wrote:
> 
>> Dear R?ers..
>> 
>> In this mock dataset how can I generate a logical variable based on whether just tes or tes3 are NA in each row??
>> 
>> test<-sample(c("A",NA,"B"),100,replace=T)
>> test2<-sample(c("A",NA,"B"),100,replace=T)
>> test3<-sample(c("A",NA,"B"),100,replace=T)
>> 
>> tes<-cbind(test,test2,test3)
>> 
>> sam<-c("test","test3")
>> apply(subset(tes,select=sam),1,FUN=function(x) is.na(x))
>> 
>> However this just tests whether each variable is missing or not per row. I?d like an -or- function in here that would provide one true/false per row based on whether test or tes3 are NA. I guess it would be easy to do it by subsetting in the example but I figure there is a more elegant way of doing it when -sam- contains 50 variables...
>> 
>> //M
>> 
>> 
>> 
>> 	[[alternative HTML version deleted]]
>> 
>> 



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