Displaying 20 results from an estimated 1000 matches similar to: "set.seed() and .Random.number"
2019 Feb 14
3
Samba switches between domain controllers
Hi
Under what conditon does samba switch between domain controllers ? Are
there any special conditions or situations in which samba decides to
useĀ "DC B" rather thanĀ "DC A" ?
In my case samba switches very often.
Thanks,
Michel
2006 Apr 03
1
How to handle failed finds.
What''s the best way to handle a find that doesn''t find anything?
For example.
Model Foo
@result = Foo.find(:first, :condition => "some condtion string").name
if the condition is not met Foo.find stops the application with ''unexpected
nil''.
What is the best way to gracefully trap this error and return something
meaningfull to the calling
2008 Dec 09
1
[LLVMdev] scalar-evolution + indvars fail to get the loop trip count?
Hi,
Seems pass scalar-evolution+indvars fail to get the loop trip count of the
following case:
int foo(int x, int y, int lam[256], int alp[256]) {
int i;
int z = y;
for (i = 255; i >= 0; i--) {
z += x;
lam[i] = alp[i];
}
return z;
}
The final optimized ll code is :
define i32 @foo(i32 %x, i32 %y, i32* %lam, i32* %alp) nounwind {
entry:
br label %bb
bb:
2006 Jul 03
6
help!
Hi,
i''m fairly new to ruby on rails, and i know the question at hand may
seem simple at first, but i''m getting really caught up in trying to
understand this and the docs aren''t giving me answer. i actually thought
i knew how the sql commands work (like :include, :conditions, :etc) but
obviously, i don''t.
there are three models M1, M2, M3 joined by a habtam
2007 Mar 16
3
ARIMA standard error
Hi,
Can anyone explain how the standard error in arima() is calculated?
Also, how can I extract it from the Arima object? I don't see it in there.
> x <- rnorm(1000)
> a <- arima(x, order = c(4, 0, 0))
> a
Call:
arima(x = x, order = c(4, 0, 0))
Coefficients:
ar1 ar2 ar3 ar4 intercept
-0.0451 0.0448 0.0139 -0.0688 0.0010
s.e.
2012 Aug 25
2
[LLVMdev] How to Check whether BasicBlock resides in a conditional branch
2012/8/25 Iaroslav Markov <ymarkov at cs.stonybrook.edu>:
> Can't you do it by performing some analysis on CFG? You can traverse that structure with BFS. And after that for all the BB you have visited more than once, you try to find a parent that has a branch instruction as a terminator. Additionally you ensure that there are no BB with branches as terminators on your way. If such
2006 Jun 13
3
Multiple lag.plots per page
Hi,
I'm trying to plot several lag.plots on a page, however the second plot
replaces the first one (although it only takes up the upper half as it
should):
par(mfrow=c(2,1))
a<-sin(1:100)
b<-cos(1:100)
lag.plot(a)
lag.plot(b)
What's the trick to this?
I'm using R 2.2.1 (2005-12-20 r36812) on Ubuntu Linux.
Thanks,
Gad
--
Gad Abraham
Department of Mathematics and
2012 Oct 30
1
Amelia imputation - column grouping
Hi everybody,
I am quite new to data imputation, but I would like to use the R package '
Amelia II: A Program for Missing Data '. However, its unclear to me how
the input for amelia should look like:
I have a data frame consisting of numerous coulmns, which represent
different experimental conditions, whereby each column has 3 replicates. I
want amelia to perform an imputation across
2007 Mar 20
1
truehist bug?
Hi,
Is this a bug in truehist()?
> library(MASS)
> x <- rep(1, 10)
> truehist(x)
Error in pretty(data, nbins) : invalid 'n' value
Thanks,
Gad
> R.version
platform i486-pc-linux-gnu
arch i486
os linux-gnu
system i486, linux-gnu
status
major 2
minor 4.1
year 2006
month 12
day 18
svn
2007 Mar 20
1
truehist bug?
Hi,
Is this a bug in truehist()?
> library(MASS)
> x <- rep(1, 10)
> truehist(x)
Error in pretty(data, nbins) : invalid 'n' value
Thanks,
Gad
> R.version
platform i486-pc-linux-gnu
arch i486
os linux-gnu
system i486, linux-gnu
status
major 2
minor 4.1
year 2006
month 12
day 18
svn
2007 Oct 16
2
survreg's algorithm
Hi,
I'm using survreg() from the survival package for parametric survival
regression (modelling inter-arrival times of patients to a waiting list
as exponentially distributed, with various regressors such as queue size
and season).
Does anyone know which algorithm survreg() uses for this?
Thanks,
Gad
--
Gad Abraham
Department of Mathematics and Statistics
The University of Melbourne
2006 Jun 23
2
Time series labeling with Zoo
Hi,
I'm using zoo because it can automatically label the months of a time
series composed of daily observations.
This works well for certain time series lengths, but not for others, e.g.:
While:
> library(zoo)
> plot(zoo(runif(10), as.Date("2005-06-01") + 0:50))
Shows up the months and day of month,
> plot(zoo(runif(10), as.Date("2005-06-01") + 0:380))
2009 Nov 27
2
Symmetric Matrix classes
Hi,
I'd like to store large covariance matrices using Matrix classes.
dsyMatrix seems like the right one, but I want to specify just the
upper/lower triangle and diagonal and not have to instantiate a huge
n^2 vector just for the sake of having half of it ignored:
Dumb example:
M <- new("dsyMatrix", uplo="U", x=rnorm(1e4), Dim=as.integer(c(100, 100)))
diag(M) <- 1
2008 Aug 12
1
Conflict between octave3.0-headers and r-base-dev
Hi,
I'm using Ubuntu Hardy i386, and the R 2.7.1 Ubuntu packages from CRAN.
The CRAN r-base-dev package depends on refblas3-dev or atlas3-base-dev,
but octave3.0-headers depends on libblas-dev. The two blas packages seem
to conflict, so r-base-dev and octave3.0-headers can't be installed
together.
Is this a known issue?
Thanks,
Gad
$ sudo apt-get install octave3.0-headers
Reading
2006 Nov 25
3
Impossible to change Primary group
I have Samba PDC and use tdbsam backend. I use the version 3.0.11, but
recently I have exchanged it for the version 3.0.23c. Now I have a
number of problem. Here is one of then.
I wish to move one user "gad" from Domain Users (RID 513) to Domain
Guests (RID 514).
Now Primary group of user "gad" is "Domain Users":
pdbedit -Lv gad -d0
Unix username: gad
NT
2008 Dec 09
1
[LLVMdev] scalar-evolution + indvars fail to get the loop trip count?
>
>
> Having the final .ll file doesn't help debug this. If you run opt
> -analyze -scalar-evolution on the .ll you pasted, it will correctly
> print out the loop trip count.
>
> I've modified llvm-gcc to remove all the passes after indvars.
>
>
I updated my llvm and now it works.
>> > Surely the loop trip count is 256, but the Loop::getTripCount()
2008 May 18
1
predict.prcomp: 'newdata' does not have the correct number of columns
Hi,
I'm doing PCA on wide matrices and I don't understand why calling
predict.prcomp on it throws an error:
> x1 <- matrix(rnorm(100), 5, 20)
> x2 <- matrix(rnorm(100), 5, 20)
> p <- prcomp(x1)
> predict(p, x2)
Error in predict.prcomp(p, x2) :
'newdata' does not have the correct number of columns
> dim(x2)
[1] 5 20
> dim(p$rotation)
[1] 20 5
2008 May 16
1
Dimensions of svd V matrix
Hi,
I'm trying to do PCA on a n by p wide matrix (n < p), and I'd like to
get more principal components than there are rows. However, svd() only
returns a V matrix of with n columns (instead of p) unless the argument
nv=p is set (prcomp calls svd without setting it). Moreover, the
eigenvalues returned are always min(n, p) instead of p, even if nv is set:
> x <-
2010 May 26
2
cran2deb Packages.bz2 Hash Sum mismatch
Hi,
I'm using Ubuntu 9.10 amd64 with cran2deb packages (I know it's meant
for Debian, it's worked fine for me for many months).
Recently apt-get update has to started to complain:
...
Hit http://debian.cran.r-project.org testing/ Release
Get:1 http://debian.cran.r-project.org testing/ Packages [515kB]
Fetched 1B in 3s (0B/s)
W: Failed to fetch
2009 Mar 10
1
S4 generic masking S3 generic when using namespace
Hi,
I have two example packages, test1 and test2, where the only code in
them is:
setGeneric("predict", function(object, ...) standardGeneric("predict"))
(get them from http://www.cs.mu.oz.au/~gabraham/test1.tar and
http://www.cs.mu.oz.au/~gabraham/test2.tar)
The difference between them is that first does not have a namespace, and
loads fine. The second has a namespace