Displaying 4 results from an estimated 4 matches for "seed1".
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seed
2003 Oct 16
2
.Random.seed
....Random.seed should be printed:
test<-function(runs,seed){
.Random.seed<-seed
for (i in 1:runs) {
print(i)
print(runif(1,0,1))
print(.Random.seed)}
return(.Random.seed}
Consider the following input/output:
>RNGkind(kind="Marsaglia-Multicarry")
> set.seed(20391)
> seed1<-.Random.seed
> seed1
[1] 401 -1607331462 -462081869
> test(2,seed1)
[1] 1
[1] 0.4188851
[1] 401 -1607331462 -462081869
[1] 2
[1] 0.7713649
[1] 401 -1607331462 -462081869
[1] 401 -1607331462 -462081869
> seed1
[1] 401 -1607331462 -462081869
&...
2011 Oct 24
3
Create a matrix with increment and element with zero subscript
Hello,
Does anyone knows how to deal with zero subscript in R. I have this code:
for (i in 1:nitems){
+ for (j in 1:ncat-1) {
+ draw<-matrix(rnorm(nitems*(ncat-1),seed1,seed2),nitems,(ncat-1))
+ d<-( sigma_d*draw ) + mu_d
+ draw<-matrix(rtnorm((nitems*(ncat-1)),mean = seed1, sd = seed2, lower = .1, upper = 1.5),nitems,(ncat-1))
+ d<-(sigma_d*draw) + mu_d
+ write.matrix(cbind(b.i0,d), file = "F:/KU/MIRT group/MIMIC...
2011 Aug 04
1
How to seed the R random number generator in C (standalone) with an instance of .Random.seed
...out the SEXP overhead of course).
But the seeds are not set accordingly and segmentation faults are not
reproducible.
More precisely, I need to replace the set_seed line in the following snippet
with something else.
#include <Rmath.h>
int main(int argc,char* argv[])
{
const unsigned int SEED1= 12345, SEED2= 67890;
set_seed(SEED1, SEED2);
...
}
Thanks in advance,
Oliver
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2012 Feb 17
3
portable parallel seeds project: request for critiques
...ch to create replicable simulations.
It blends ideas about seed management from John M. Chambers
Software for Data Analysis (2008) with ideas from the snowFT
package by Hana Sevcikova and Tony R. Rossini.
Here's my proposal.
1. Run a preliminary program to generate an array of seeds
run1: seed1.1 seed1.2 seed1.3
run2: seed2.1 seed2.2 seed2.3
run3: seed3.1 seed3.2 seed3.3
... ... ...
run1000 seed1000.1 seed1000.2 seed1000.3
This example provides 3 separate streams of random numbers within each
run. Because we will use the L'Ecuyer "many separate st...