On Jan 21, 2007, at 8:11 PM, John Fox wrote:
Dear Haris,
Using lapply() et al. may produce cleaner code, but it won't
necessarily
speed up a computation. For example:
X - data.frame(matrix(rnorm(1000*1000), 1000, 1000))
y - rnorm(1000)
mods - as.list(1:1000)
system.time(for (i in
On Mon, 22 Jan 2007, Charilaos Skiadas wrote:
On Jan 21, 2007, at 8:11 PM, John Fox wrote:
Dear Haris,
Using lapply() et al. may produce cleaner code, but it won't
necessarily
speed up a computation. For example:
X - data.frame(matrix(rnorm(1000*1000), 1000, 1000))
y - rnorm(1000)
: [R] efficient code. how to reduce running time?
On Jan 21, 2007, at 8:11 PM, John Fox wrote:
Dear Haris,
Using lapply() et al. may produce cleaner code, but it won't
necessarily speed up a computation. For example:
X - data.frame(matrix(rnorm(1000*1000), 1000, 1000)) y -
rnorm
Dear Brian,
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Prof
Brian Ripley
Sent: Monday, January 22, 2007 11:06 AM
To: Charilaos Skiadas
Cc: John Fox; r-help@stat.math.ethz.ch
Subject: Re: [R] efficient code. how to reduce running time
On Jan 22, 2007, at 10:39 AM, John Fox wrote:
One thing that seems particularly
striking in your results is the large difference between elapsed
time and
user CPU time, making me wonder what else was going on when you ran
these
examples.
Yes, indeed there were a lot of other things
Hi,
I am new to R.
and even though I've made my code to run and do what it needs to .
It is taking forever and I can't use it like this.
I was wondering if you could help me find ways to fix the code to run
faster.
Here are my codes..
the data set is a bunch of 0s and 1s in a data.frame.
What I am
Here is the dataset you need to run this code..
http://mypage.iu.edu/~mirhan/msoutput.3932.100
thank you.
On 1/21/07, miraceti [EMAIL PROTECTED] wrote:
Hi,
I am new to R.
and even though I've made my code to run and do what it needs to .
It is taking forever and I can't use it like this.
-9140x23604
http://socserv.mcmaster.ca/jfox
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of miraceti
Sent: Sunday, January 21, 2007 12:38 PM
To: r-help@stat.math.ethz.ch
Subject: [R] efficient code. how to reduce
PROTECTED] On Behalf Of miraceti
Sent: Sunday, January 21, 2007 12:38 PM
To: r-help@stat.math.ethz.ch
Subject: [R] efficient code. how to reduce running time?
Hi,
I am new to R.
and even though I've made my code to run and do what it needs to .
It is taking forever and I can't use
On Jan 21, 2007, at 5:55 PM, miraceti wrote:
Thank you all for lookin at it.
I'll fix the code to preallocate the objects.
and I wonder if there is a way to call anova on all the columns at
the same
time..
Right now I am calling (Y~V1, data) from V1 to V50 thru a loop.
I tried (Y~.,
@stat.math.ethz.ch
Subject: Re: [R] efficient code. how to reduce running time?
On Jan 21, 2007, at 5:55 PM, miraceti wrote:
Thank you all for lookin at it.
I'll fix the code to preallocate the objects.
and I wonder if there is a way to call anova on all the
columns at the
same time
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