[R] substring

[Weidong Gu]

?gsub() 

Match the start (_) followed by anything (.*) and replace by ""

gsub("_.*","",Name)

Weidong Gu, 
Department of Medicine
University of Alabama, Birmingham
1900 University Blvd., Birmingham, Alabama 35294
PH: (205)-975-9053


-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of Qian R
Sent: Tuesday, May 06, 2008 12:56 PM
To: R-help at r-project.org
Subject: [R] substring

I have a data frame such as
   
  Name
  DISC1_5916
  DABC2_789
  ABCD_1234
   
   
  I want to substring column Name so that 
   
  DISC1
  DABC2
  ABCD
  ...
   
  Thanks.
   
   

       
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