[R] How to filter information from a table into a new table

[Mulholland, Tom]

temp <- table(rpois(100,5),rpois(100,1))
temp
temp[temp[,1] > 1,]
temp[temp[,1] == 1,]
temp[temp[,1] == 2,]
temp[temp[,1] == 3,]

Of course you have not made it obvious if you are using the term table to mean any output that looks like a table, but in general terms you will find information in the documentation that comes with R, such as "An Introduction to R."

In your case 

anything.you.like <- T[T[,1] == 1,]

Tom

> -----Original Message-----
> From: K Fernandes [mailto:kafernan at uwaterloo.ca]
> Sent: Thursday, 20 January 2005 7:15 AM
> To: r-help at stat.math.ethz.ch
> Subject: [R] How to filter information from a table into a new table
> 
> 
> Hello,
> 
>  
> 
> Say I have a table T as follows
> 
>  
> 
> A b
> 
> 1 2
> 
> 1 3
> 
> 2 2
> 
> 2 3
> 
> ...etc.
> 
>  
> 
> And I would like create a table C from this existing table T, but only
> including rows where A=1.
> 
>  
> 
> How might I do this?
> 
>  
> 
> Thanks,
> 
>  
> 
> K - please reply to kafernan at uwaterloo.ca as well as I am on 
> the digest
> version :)
> 
>  
> 
> 
> 	[[alternative HTML version deleted]]
> 
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