Displaying 4 results from an estimated 4 matches for "nsam".
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nasm
2012 Nov 07
5
Calling R object from R function
Hi,
Can you please help me with this please?
What I am trying to do is call a vector from R function and used in the new
function
So I create 4 functions with these arguments
M11 <- function(TrainData,TestData,mdat,nsam) {
ls <- list()
I have few statments one of them is
vectx <- c(,1,2,3,4,5,6,6)
vectz <- c(12,34,5,6,78,9,90)
and then................
ls(vectx=vtecx,vectz=vectz)
return(ls)
}
Then I great an new function has the following arguments
get.m <- function(dat,asim,ModelFun,M){
Sim <- li...
2008 Oct 04
3
How to plot countours with fixted densities?
Hello,
I used the following codes to generate bivariate normal dependence structure with unit Frechet margins.
Sigma <- matrix(c(1,.5*sqrt(1),.5*sqrt(1),1),2,2) # generate
y <- mvrnorm(Nsam, c(0,0), Sigma) # random
v <- cbind(pnorm(y[,1],mean = 0, sd = 1), pnorm(y[,2],mean = 0, sd = 1))
z <- cbind(-1/log(v[,1]),-1/log(v[,2]))
z1 <- z[,1]
z2 <- z[,2]
And to get the scatter plot by:
plot(z1,z2)
How can I get the contour densities plots for (z1,z2) at 10^(-j/2)...
2002 Mar 25
2
Extreme value distributions (Long.)
...xtreme
value distributions. I have observed a phenomenon which puzzles me,
and I would appreciate it if anyone could shed some light on the
puzzle. The phenomenon occurs in both R and Splus. (Also, I have
now discovered, in stand-alone Fortran.)
The phenomenon boils down to this:
I generate ``nsam'' samples of chi-squared_1 iid random
variables, each sample being of size ``n''.
For each sample, let M be the maximum of the sample,
and let the statistic S = (M - d_n)/2, where
d_n = 2*ln(n) - ln(ln(n)) - ln(pi).
Count the number K of times that G(S) < 0.05 where G(x)...
2003 Dec 05
3
.C() memory allocation
...the argument sequences = integer(0) in the call to .C(),
then declaring the corresponding argument as int *sequences in my C code.
I tried R_alloc()ing the storage in C and assigning the pointer to
sequences but that segfaulted.
Then I tried Realloc()ing sequences:
sequences = Realloc(sequences, *nsam * *totalnmuts, int) ;
But that also segfaults.
Thanks very much for replies and R in general.
Dan
btw I think this is misleading / a typo in section 5.1.2 p.58 ch5 of
"Writing R Extensions", I hope I haven't just misunderstood.
It reads:
The interface functions are
type* Callo...