[R] Left/right hand side characters

From: Brooks, Anthony B <anthony.brooks_at_csc.mrc.ac.uk>
Date: Mon, 14 May 2007 17:49:25 +0100


Hello all

Is there a way reducing the number of characters in a list so that just the left n numbers of characters is given?

For example, If I have a list, listnames, which consists of 4 strings of 6 characters;  

>listnames

[1] "item12" "item34" "item56" "item78"  

Is there a way to reduce this so only the 5 characters on the lefthand side are given (similar to the LEFT function in Excel)  

So that I'd get a list like this  

>listnames

[1] "item1" "item3" "item5" "item7"  

Thanks

Tony  

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