[R] Change the names of a dataframe

From: Jun Shen <jun.shen.ut_at_gmail.com>
Date: Tue, 03 May 2011 15:43:23 -0500

Dear list,

This may sound silly. What is the right way to change the names of a dataframe? Let's say I have this data frame (dose) with four columns with names "ID", "DOSE", "TIME" "CMT". I want to change "DOSE" to "AMT". So I did


But nothing happened. The name of the second column is still "DOSE".

Only this works


I wonder what is wrong with the first method. Thanks.


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