A cleaner approach than attach()---because you don't need to remember
to detach()---is:
my.df-data.frame(cbind(x=runif(100), y=rnorm(100)))
head(my.df)
with(my.df, plot(y~x))
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Professor Michael Kubovy
University of Virginia
Department of Psychology
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On Jul 22, 2008, at 10:10 PM, milton ruser wrote:
Hi Edna,
I am not sure the completely right answer, but I suspect that you use
data(df) to invoke a data.frame from the sample datasets provided
from the
packages available on your R system. By other side, if you have a
data.frame
loaded on your environent, you can use attach do turn the columns
available on your environment as objects, like this.
my.df-data.frame(cbind(x=runif(100), y=rnorm(100)))
head(my.df)
plot(y~x)
#you get error
attach(my.df)
plot(y~x)
#you get the plot
detach(my.df) # remove the x,y objects from your environment
plot(y~x)
#you get error again.
On 7/22/08, Edna Bell [EMAIL PROTECTED] wrote:
Hi!
What is the difference between using data(somedataset) vs.
attach(somedataset), please?
thanks,
Edna Bell
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