Re: [R] Calling on certina columns

2012-05-23 Thread David Winsemius 


On May 23, 2012, at 5:47 PM, Chris Burns wrote:

I'm trying to run a regression on certain columns.  The columns are  
named
"Cat_1", "Cat_2" etc.  Is there a way to call upon all of the  
columns that

contain "Cat"?



lm( y ~ . , data=dfrm[, c("y", grep("Cat", names(dfrm), value=TRUE) ] )

OR:

lm (y ~ . , data=dfrm[,  grep("Cat|y", names(dfrm) ) ] )




--

David Winsemius, MD
West Hartford, CT

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[R] Calling on certina columns

2012-05-23 Thread Chris Burns 
I'm trying to run a regression on certain columns.  The columns are named
"Cat_1", "Cat_2" etc.  Is there a way to call upon all of the columns that
contain "Cat"?

Thanks,

Chris

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