Dear Leila
Does the function mvrnorm in package MASS do what you want?
On 11/11/2015 08:38, leila zamani via R-help wrote:
Hi every one,
I'm new to R. I read about R and search all the packages but I couldn't find
the package that I want. I want to generate 2D (matrices) random numbers that
Hi,
This generate matrix:
matrix( rnorm(5*4,mean=0,sd=1), 5, 4)
for correlated matrix please see this link:
http://stackoverflow.com/questions/10680658/how-can-i-create-a-correlation-matrix-in-r
Karim
On Wed, Nov 11, 2015 at 9:38 AM, leila zamani via R-help <
r-help@r-project.org> wrote:
> Hi
-Original Message-
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org]
On Behalf Of Dennis Murphy
Sent: Thursday, July 21, 2011 8:55 PM
To: karena
Cc: r-help@r-project.org
Subject: Re: [R] Random number generation
Hi:
Here's one way using uniform(0, 1
Thank you guys for all the help. I appreciate!
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On 07/21/2011 07:18 PM, karena wrote:
Hi,
I want to generate multiple sets of random numbers.
The requirement is that:
1) each set have 3 random numbers;
2) the sum of the three number is always 1.
how to do this?
Try this:
df-data.frame(a=runif(10),b=runif(10))
df$c=df$a+df$b
On 07/21/2011 08:04 PM, Jason Edgecombe wrote:
On 07/21/2011 07:18 PM, karena wrote:
Hi,
I want to generate multiple sets of random numbers.
The requirement is that:
1) each set have 3 random numbers;
2) the sum of the three number is always 1.
how to do this?
Try this:
On 21/07/2011 7:18 PM, karena wrote:
Hi,
I want to generate multiple sets of random numbers.
The requirement is that:
1) each set have 3 random numbers;
2) the sum of the three number is always 1.
how to do this?
There are lots of ways. What is the context? It would determine the
first
Could this possibly be a homework question?
cheers,
Rolf Turner
On 22/07/11 11:18, karena wrote:
Hi,
I want to generate multiple sets of random numbers.
The requirement is that:
1) each set have 3 random numbers;
2) the sum of the three number is always 1.
how to do this?
To Jason: Still thank you, your reply gives me some clue about how to do
this.
To Duncan: Thank you for rely. It helped.
Karena
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Sent from the R help mailing list archive at
Hi:
Here's one way using uniform(0, 1) pseudo-random numbers, but there
are many ways you could go about this.
# each row comprises a set of three pseudo-random numbers
u - matrix(runif(30), nrow = 10)
# divide each element in a row by its row sum
v - t(apply(u, 1, function(x) x/sum(x)))
Hi, does this do what you want to do? I take the first six lines of the data
you provided. Note that letters corresponds to your Name, and number
corresponds to your Numbers variable.
letters=rep(c(A,B,C),2)
letters
number=c(25,3,13,5,7,0)
number
letters2=rep(letters,number)
letters2
See the lmom package by J.R.M Hosking
or
lmomco package by W.H.Asquith
-wha
On Feb 24, 2009, at 5:46 AM, Maithili Shiva wrote:
Dear R helpers
How to generate random numbers for
(a) Generalized logistic distribution
(b) Generalized normal distribution
(c) Pearson Type III distribution
Dear Maithili,
For (1) see [1] and for (2) see page 24 in [2].
HTH,
Jorge
[1] http://www.stat.ucl.ac.be/ISdidactique/Rhelp/library/evd/html/gev.html
[2] http://cran.r-project.org/web/packages/fExtremes/fExtremes.pdf
On Thu, Dec 18, 2008 at 3:17 AM, Maithili Shiva
Please don't cross-post. I've replied in R-devel.
On 8/5/2008 8:47 AM, subramanian R wrote:
Hi All,
I have a few queries regarding Random Number generation in R.
according to the help(Random.User) i defined my own functions for
user_unif_rand and user_norm_rand (uniform
on 07/31/2008 12:24 PM Max wrote:
Hi Everyone,
I did a quick search of the list and it looks like this may not have
been asked before... I'm trying to generate a matrix of random numbers
between 0 and 1, with 6 columns, 1 rows. About all I know is that
runif(1) gives me the random number
Marc,
this is very handy. My next question is, do you know a quick and easy
way to transfer all of the output to a txt file? (or .xls)?
Thanks,
-Max
Marc Schwartz explained on 07/31/2008 :
on 07/31/2008 12:24 PM Max wrote:
Hi Everyone,
I did a quick search of the list and it looks like
Hi Max,
See ?write.table. Perhaps:
MAT - matrix(runif(1 * 6), 1, 6)
# TXT format
write.table(MAT,
C:/yourmatrix.txt,col.names=FALSE,row.names=FALSE,quote=FALSE)
# XLS format
write.table(MAT,
C:/yourmatrix.xls,col.names=FALSE,row.names=FALSE,quote=FALSE,sep=\t)
HTH,
Jorge
On Thu,
?write.table
could help
PF
2008/7/31 Max [EMAIL PROTECTED]:
Marc,
this is very handy. My next question is, do you know a quick and easy way to
transfer all of the output to a txt file? (or .xls)?
Thanks,
-Max
Marc Schwartz explained on 07/31/2008 :
on 07/31/2008 12:24 PM Max wrote:
m - runif(6)
mm - matrix(m, ncol=6)
HTH
Dave
On Thu, Jul 31, 2008 at 6:24 PM, Max [EMAIL PROTECTED] wrote:
Hi Everyone,
I did a quick search of the list and it looks like this may not have been
asked before... I'm trying to generate a matrix of random numbers between 0
and 1, with 6
This is perfect, thanks! :)
Jorge Ivan Velez pretended :
Hi Max,
See ?write.table. Perhaps:
MAT - matrix(runif(1 * 6), 1, 6)
# TXT format
write.table(MAT,
C:/yourmatrix.txt,col.names=FALSE,row.names=FALSE,quote=FALSE)
# XLS format
write.table(MAT,
On Behalf Of Esmail Bonakdarian wrote:
...
What I read doesn't seem to be incorrect however (it may even
have been an archived message here), the *language* itself
does not seem to support block *comments*. Using conditional
constructs, or an IDE/editor to achieve similar results is a
work
Greg Snow wrote:
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Esmail Bonakdarian
Sent: Sunday, May 11, 2008 7:25 AM
To: Prof Brian Ripley
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Random number generation
[snip]
What I read doesn't seem
Esmail Bonakdarian:
you could always run your R scripts through the C preproccessor and
have it strip the block comments for you.
Too much work, call me old school, but I like the computer do work for me,
rather than the other way around
Most editors (and every editor worth using)
-Original Message-
From: Esmail Bonakdarian [mailto:[EMAIL PROTECTED]
Sent: Tuesday, May 13, 2008 8:13 AM
To: Greg Snow
Cc: Prof Brian Ripley; [EMAIL PROTECTED]
Subject: Re: [R] Random number generation
Greg Snow wrote:
-Original Message-
[snip]
you could always run
On 5/13/2008 1:38 PM, Greg Snow wrote:
-Original Message-
From: Esmail Bonakdarian [mailto:[EMAIL PROTECTED]
Sent: Tuesday, May 13, 2008 8:13 AM
To: Greg Snow
Cc: Prof Brian Ripley; [EMAIL PROTECTED]
Subject: Re: [R] Random number generation
Greg Snow wrote:
-Original Message
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Esmail Bonakdarian
Sent: Sunday, May 11, 2008 7:25 AM
To: Prof Brian Ripley
Cc: [EMAIL PROTECTED]
Subject: Re: [R] Random number generation
[snip]
What I read doesn't seem to be incorrect however
Dennis,
I assume that there is a set.seed() somewhere in your script, possibly
in something you source()d (hopefully not in anything library()d).
Have you tried successively removing/commenting parts of the script
before the sample() command until the problem goes away? That way you
should
Stephan Kolassa wrote:
Have you tried successively removing/commenting parts of the script
before the sample() command until the problem goes away? That way you
should be able to pinpoint the offending script command.
Hi,
This brings up a question I have .. is there a way to do *block*
On Sun, 11 May 2008, Esmail Bonakdarian wrote:
Stephan Kolassa wrote:
Have you tried successively removing/commenting parts of the script before
the sample() command until the problem goes away? That way you should be
able to pinpoint the offending script command.
Hi,
This brings up a
Hello there,
Prof Brian Ripley wrote:
On Sun, 11 May 2008, Esmail Bonakdarian wrote:
Stephan Kolassa wrote:
Have you tried successively removing/commenting parts of the script
before the sample() command until the problem goes away? That way you
should be able to pinpoint the offending
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