[R] Iterations of random sampling
I have a univariate binary (1,0) 230,000 records, I need to make 20,000 iterations of random sampling of a fixed size. Where I put the result of the sum of selected records for each repetition Thank's _ of your life [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Iterations of random sampling
On 3/11/2009 3:15 PM, René Pineda wrote: I have a univariate binary (1,0) 230,000 records, I need to make 20,000 iterations of random sampling of a fixed size. Where I put the result of the sum of selected records for each repetition X - rbinom(23, 1, .5) sample.sums - replicate(2, sum(sample(X, 10))) Thank's _ of your life [[alternative HTML version deleted]] __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. -- Chuck Cleland, Ph.D. NDRI, Inc. (www.ndri.org) 71 West 23rd Street, 8th floor New York, NY 10010 tel: (212) 845-4495 (Tu, Th) tel: (732) 512-0171 (M, W, F) fax: (917) 438-0894 __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
[R] Iterations
I have a command that reads in some data:
x - read.csv(Sales2007.dat, header=TRUE)
Then I try to organize the data:
sc - split(x, list(x$Category, x$SubCategory), drop=TRUE)
Then I want to iterate through the data. I was able to get the following to run
on the R console:
for(i in 1:length(sc))
{
sum(sc[[i]]$Quantity)
}
But notiing is primted on the console. I find that:
for(i in 1:100)
{
i
}
Also does't output anything? I am probably making a wrong assumption here. Why
desn't the loop seem to output anyything?
Thank you.
Kevin
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Re: [R] Iterations
Kevin,
By default, many functions only *return* a result, they don't explicitly
*print* it. There is no difference in interactive mode, but there is in
batch mode (e.g., in loops). Use print() or cat() for explicit printing
to console.
for(i in 1:100)
{
cat(i,\n)
}
HTH,
Stephan
[EMAIL PROTECTED] schrieb:
I have a command that reads in some data:
x - read.csv(Sales2007.dat, header=TRUE)
Then I try to organize the data:
sc - split(x, list(x$Category, x$SubCategory), drop=TRUE)
Then I want to iterate through the data. I was able to get the following to run
on the R console:
for(i in 1:length(sc))
{
sum(sc[[i]]$Quantity)
}
But notiing is primted on the console. I find that:
for(i in 1:100)
{
i
}
Also does't output anything? I am probably making a wrong assumption here. Why
desn't the loop seem to output anyything?
Thank you.
Kevin
__
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
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Re: [R] Iterations
[EMAIL PROTECTED] wrote:
I have a command that reads in some data:
x - read.csv(Sales2007.dat, header=TRUE)
Then I try to organize the data:
sc - split(x, list(x$Category, x$SubCategory), drop=TRUE)
Then I want to iterate through the data. I was able to get the following to run
on the R console:
for(i in 1:length(sc))
{
sum(sc[[i]]$Quantity)
}
But notiing is primted on the console. I find that:
for(i in 1:100)
{
i
}
Also does't output anything? I am probably making a wrong assumption here. Why
desn't the loop seem to output anyything?
Thank you.
Entering an expression interactively behaves differently than entering
one in the context of another statement or function.
See the FAQ:
http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html#Why-is-the-output-not-printed-when-I-source_0028_0029-a-file_003f
--
---
Jeff NewmillerThe . . Go Live...
DCN:[EMAIL PROTECTED]Basics: ##.#. ##.#. Live Go...
Live: OO#.. Dead: OO#.. Playing
Research Engineer (Solar/BatteriesO.O#. #.O#. with
/Software/Embedded Controllers) .OO#. .OO#. rocks...1k
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Re: [R] Iterations
for(1 in 1:10)
{
print(i)
}
Mike
On Tue, Jul 15, 2008 at 1:11 PM, [EMAIL PROTECTED] wrote:
I have a command that reads in some data:
x - read.csv(Sales2007.dat, header=TRUE)
Then I try to organize the data:
sc - split(x, list(x$Category, x$SubCategory), drop=TRUE)
Then I want to iterate through the data. I was able to get the following to
run on the R console:
for(i in 1:length(sc))
{
sum(sc[[i]]$Quantity)
}
But notiing is primted on the console. I find that:
for(i in 1:100)
{
i
}
Also does't output anything? I am probably making a wrong assumption here.
Why desn't the loop seem to output anyything?
Thank you.
Kevin
__
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https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
--
--
Michael D. Rennie
Ph.D. Candidate
University of Toronto at Mississauga
3359 Missisagua Rd. N.
Mississauga, ON L5L 1C6
Ph: 905-828-5452 Fax: 905-828-3792
www.utm.utoronto.ca/~w3rennie
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and provide commented, minimal, self-contained, reproducible code.
Re: [R] Iterations
Oops, typo- sorry, should be
for(i in 1:10)
{
print(i)
}
Mike
On Tue, Jul 15, 2008 at 1:39 PM, Michael Rennie [EMAIL PROTECTED] wrote:
for(1 in 1:10)
{
print(i)
}
Mike
On Tue, Jul 15, 2008 at 1:11 PM, [EMAIL PROTECTED] wrote:
I have a command that reads in some data:
x - read.csv(Sales2007.dat, header=TRUE)
Then I try to organize the data:
sc - split(x, list(x$Category, x$SubCategory), drop=TRUE)
Then I want to iterate through the data. I was able to get the following to
run on the R console:
for(i in 1:length(sc))
{
sum(sc[[i]]$Quantity)
}
But notiing is primted on the console. I find that:
for(i in 1:100)
{
i
}
Also does't output anything? I am probably making a wrong assumption here.
Why desn't the loop seem to output anyything?
Thank you.
Kevin
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
--
--
Michael D. Rennie
Ph.D. Candidate
University of Toronto at Mississauga
3359 Missisagua Rd. N.
Mississauga, ON L5L 1C6
Ph: 905-828-5452 Fax: 905-828-3792
www.utm.utoronto.ca/~w3rennie
--
--
Michael D. Rennie
Ph.D. Candidate
University of Toronto at Mississauga
3359 Missisagua Rd. N.
Mississauga, ON L5L 1C6
Ph: 905-828-5452 Fax: 905-828-3792
www.utm.utoronto.ca/~w3rennie
__
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
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Re: [R] Iterations
If you read the help page, ?for, you might have seen under Value, that
'for', 'while' and 'repeat' return the value of the last
expression evaluated (or 'NULL' if none was), invisibly.
So if you want to see the values, print() them.
In general, from the first part of your message, it looks like you're
trying to run some analysis on different subgroups of your data.
You may want to try the functions tapply, by, aggregate, ave, etc., for
this purpose rather than using 'for' loops.
Best,
Erik Iverson
[EMAIL PROTECTED] wrote:
I have a command that reads in some data:
x - read.csv(Sales2007.dat, header=TRUE)
Then I try to organize the data:
sc - split(x, list(x$Category, x$SubCategory), drop=TRUE)
Then I want to iterate through the data. I was able to get the following to run
on the R console:
for(i in 1:length(sc))
{
sum(sc[[i]]$Quantity)
}
But notiing is primted on the console. I find that:
for(i in 1:100)
{
i
}
Also does't output anything? I am probably making a wrong assumption here. Why
desn't the loop seem to output anyything?
Thank you.
Kevin
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
__
R-help@r-project.org mailing list
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and provide commented, minimal, self-contained, reproducible code.
Re: [R] Iterations
Sorry I missed the print part. When nothing was output I assumed that nothing
happened.
Thank you.
Kevin
Erik Iverson [EMAIL PROTECTED] wrote:
If you read the help page, ?for, you might have seen under Value, that
'for', 'while' and 'repeat' return the value of the last
expression evaluated (or 'NULL' if none was), invisibly.
So if you want to see the values, print() them.
In general, from the first part of your message, it looks like you're
trying to run some analysis on different subgroups of your data.
You may want to try the functions tapply, by, aggregate, ave, etc., for
this purpose rather than using 'for' loops.
Best,
Erik Iverson
[EMAIL PROTECTED] wrote:
I have a command that reads in some data:
x - read.csv(Sales2007.dat, header=TRUE)
Then I try to organize the data:
sc - split(x, list(x$Category, x$SubCategory), drop=TRUE)
Then I want to iterate through the data. I was able to get the following to
run on the R console:
for(i in 1:length(sc))
{
sum(sc[[i]]$Quantity)
}
But notiing is primted on the console. I find that:
for(i in 1:100)
{
i
}
Also does't output anything? I am probably making a wrong assumption here.
Why desn't the loop seem to output anyything?
Thank you.
Kevin
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
__
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Iterations
Thank you.
?for just gives me a + rompt indicating that I need to supply more input. The
same with ?while and ?repeat. Help(for) yelds:
help(for)
Error: unexpected ')' in help(for)
But thanks for the tip.
Keivn
Erik Iverson [EMAIL PROTECTED] wrote:
If you read the help page, ?for, you might have seen under Value, that
'for', 'while' and 'repeat' return the value of the last
expression evaluated (or 'NULL' if none was), invisibly.
So if you want to see the values, print() them.
In general, from the first part of your message, it looks like you're
trying to run some analysis on different subgroups of your data.
You may want to try the functions tapply, by, aggregate, ave, etc., for
this purpose rather than using 'for' loops.
Best,
Erik Iverson
[EMAIL PROTECTED] wrote:
I have a command that reads in some data:
x - read.csv(Sales2007.dat, header=TRUE)
Then I try to organize the data:
sc - split(x, list(x$Category, x$SubCategory), drop=TRUE)
Then I want to iterate through the data. I was able to get the following to
run on the R console:
for(i in 1:length(sc))
{
sum(sc[[i]]$Quantity)
}
But notiing is primted on the console. I find that:
for(i in 1:100)
{
i
}
Also does't output anything? I am probably making a wrong assumption here.
Why desn't the loop seem to output anyything?
Thank you.
Kevin
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
__
R-help@r-project.org mailing list
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
Re: [R] Iterations
Sorry, I'm in ESS.
Try ?Control
[EMAIL PROTECTED] wrote:
Thank you.
?for just gives me a + rompt indicating that I need to supply more input. The
same with ?while and ?repeat. Help(for) yelds:
help(for)
Error: unexpected ')' in help(for)
But thanks for the tip.
Keivn
Erik Iverson [EMAIL PROTECTED] wrote:
If you read the help page, ?for, you might have seen under Value, that
'for', 'while' and 'repeat' return the value of the last
expression evaluated (or 'NULL' if none was), invisibly.
So if you want to see the values, print() them.
In general, from the first part of your message, it looks like you're
trying to run some analysis on different subgroups of your data.
You may want to try the functions tapply, by, aggregate, ave, etc., for
this purpose rather than using 'for' loops.
Best,
Erik Iverson
[EMAIL PROTECTED] wrote:
I have a command that reads in some data:
x - read.csv(Sales2007.dat, header=TRUE)
Then I try to organize the data:
sc - split(x, list(x$Category, x$SubCategory), drop=TRUE)
Then I want to iterate through the data. I was able to get the following to run
on the R console:
for(i in 1:length(sc))
{
sum(sc[[i]]$Quantity)
}
But notiing is primted on the console. I find that:
for(i in 1:100)
{
i
}
Also does't output anything? I am probably making a wrong assumption here. Why
desn't the loop seem to output anyything?
Thank you.
Kevin
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
__
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Re: [R] Iterations
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Tuesday, July 15, 2008 12:40 PM
To: Erik Iverson
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Iterations
Thank you.
?for just gives me a + rompt indicating that I need to supply
more input. The same with ?while and ?repeat. Help(for) yelds:
You need to enclose R language keywords in quotes, i.e.
?'for'
help('for')
?'while'
?'repeat'
help(for)
Error: unexpected ')' in help(for)
But thanks for the tip.
Keivn
snip
Daniel J. Nordlund
Washington State Department of Social and Health Services
Planning, Performance, and Accountability
Research and Data Analysis Division
Olympia, WA 98504-5204
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Re: [R] Iterations
On 16/07/2008, at 7:40 AM, [EMAIL PROTECTED]
[EMAIL PROTECTED] wrote:
Thank you.
?for just gives me a + rompt indicating that I need to supply more
input. The same with ?while and ?repeat. Help(for) yelds:
help(for)
Error: unexpected ')' in help(for)
But thanks for the tip.
?help or help(help)
I.e. RTFM!!!
##
Attention:\ This e-mail message is privileged and confid...{{dropped:9}}
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