[R] Renaming column names according to another dataframe

[arun]

HI,
Try this:
 names(df)<-df_names$name[df_names$code%in%names(df)]
 head(df,2)
#  Col A Col B Col C
#1     1     1     1
#2     2     2     2
A.K.




----- Original Message -----
From: Johannes Radinger <johannesradinger at gmail.com>
To: r-help at r-project.org
Cc: 
Sent: Tuesday, December 11, 2012 5:55 AM
Subject: [R] Renaming column names according to another dataframe

Hi,

I've got a dataframe having a code as column name.
Addtionally I have another dataframe with a two columns (and lots of
rows), the first
containing the code and the second some Text (real name).

Now I'd like to use the information (pairs of code and name) of the
second dataframe to rename all the columnnames in the first dataframe.
How is it possible to achieve that?

Here a small example of the two dataframes:

df <- data.frame(A=(1:10),B=(1:10),C=(1:10))
df_names <- data.frame(code=c("A","B","C","D","E"),name=c("Col A","Col
B","Col C","Col D","Col E"))

/j

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