for example:
d = data.frame(gender=c(m,f,unkown), x=rnorm(300))
tapply(d$x,d$gender,mean)
f munkown
0.0787628409 0.0940534765 -0.0005323276
regards,
stefan
On Wed, Dec 09, 2009 at 04:50:37PM -0800, dolar wrote:
Hi there
I have a dataframe of a whole
...@z107.de
Subject: Re: [R] simple data manipulation question
To: dolar nyet...@gmail.com
Cc: r-help@r-project.org
Date: Thursday, December 10, 2009, 1:45 AM
for example:
d = data.frame(gender=c(m,f,unkown),
x=rnorm(300))
tapply(d$x,d$gender,mean)
f
m
unkown
To: r-help@r-project.org
Subject: [R] simple data manipulation question
Hi there
I have a dataframe of a whole lot of variables
lets say, one of my variables is gender
how do I simply get an average of all other variables by gender?
--
View this message in context: http://n4.nabble.com
: Wednesday, December 09, 2009 5:51 PM
To: r-help@r-project.org
Subject: [R] simple data manipulation question
Hi there
I have a dataframe of a whole lot of variables
lets say, one of my variables is gender
how do I simply get an average of all other variables by gender?
--
View this message
, 2009 9:48 AM
To: dolar; r-help@r-project.org
Subject: Re: [R] simple data manipulation question
?aggregate
--
Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.s...@imail.org
801.408.8111
-Original Message-
From: r-help-boun...@r-project.org [mailto:r
Hi there
I have a dataframe of a whole lot of variables
lets say, one of my variables is gender
how do I simply get an average of all other variables by gender?
--
View this message in context:
http://n4.nabble.com/simple-data-manipulation-question-tp956600p956600.html
Sent from the R help
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