Displaying 20 results from an estimated 10000 matches similar to: "Help with a repeating process"
2012 Apr 12
1
Generate combination of strings
Hey all,
I am trying to generate a number of vectors with string combinations. The
below code solves my initial problem, however I would prefer not hardcoding
the positions of the 'objects' as in the future the number of 'objects'
could increase. Is there a way to loop over these objects and generate the
same output? The same goes for the 'maxspacer'.
Thanks a whole
2005 May 17
1
(no subject)
Hello Andreas
I?ve read yor thread about the opening word files read only protection
failure.
I have the same problem. Have you got any answer on the problem you will
share.
Best regards
Michael
----------------------------------------
Michael B?rjesson
Systemtekniker/N?tverkstekniker
Wettergrens Kontorscenter AB
Argongatan 32
431 51 M?lndal
tel: 031-706 25 00
mobil: 031-760 73 508
2007 Apr 28
4
pure R code package for Windows
Dear R developers,
I am using R under Linux, but I would like to share
an extension package with some Windows users. The package
contains only data and .R scripts. There is no src directory.
So, I think I do not need a Windows machine with C compiler,
"make", "sh" and "perl". If I am wrong, please tell me.
I tried the following approaches (after verifying the
2006 Oct 11
2
expression as a parameter of binom.test (PR#9288)
Full_Name: Petr Savicky
Version: 2.4.0
OS: Fedora Core release 2
Submission from: (NULL) (62.24.91.47)
the error is
> binom.test(0.56*10000,10000)
Error in binom.test(0.56 * 10000, 10000) :
'x' must be nonnegative and integer
while
> binom.test(5600,10000)
yields correct result.
The same error occurrs for
> binom.test(0.57*10000,10000)
2009 May 03
1
suggestion for extending ?as.factor
In R-2.10.0, the development version, function as.factor() uses 17 digit
precision for conversion of numeric values to character type. This
is very good for the consistency of the resulting factor, however,
i expect that people will complain about, for example, as.factor(0.3)
being
[1] 0.29999999999999999
Levels: 0.29999999999999999
I suggest to extend the "Warning" section of
2012 Mar 08
4
Correlation between 2 matrices but with subset of variables
Dear All,
I have two matrices A (40 x 732) and B (40 x 1230) and would like to calculate correlation between them. I can use: cor(A,B, method="pearson") to calculate correlation between all possible pairs. But the issue is that there is one-many specific mappings between A and B and I just need to calculate correlations for those pairs (not all). Some variables in A (proteins, say p1)
2002 Jun 20
1
tree construction crashes (PR#1698)
Full_Name: Petr Savicky
Version: 1.5.0
OS: SuSE 7.2
Submission from: (NULL) (147.231.6.1)
The function tree() from the tree package crashes for certain input data.
All the information needed to reproduce the error (data, script, expected
error message) may be found at
http://www.cs.cas.cz/~savicky/tree_error/tree_error.tgz
Exactly the same error appeared at another computer running some RedHat
2012 Feb 16
2
help with e+01 number abbreviations
Dear List,
I will appreciate any advice regarding how to convert the following numbers
[I got in return by taxondive()] in numeric integers without the e.g.
6.4836e+01
abbreviations.
Thank you very much in advance,
Gian
> taxa_dive
Species Delta Delta* Lambda+ Delta+ S
Delta+
Nat1 5.0000e+00 6.4836e+01 9.5412e+01 6.7753e+02 8.7398e+01
436.99
Nat2
2012 Feb 28
7
indexing??
Hello All,
My algorithm as follows;
y <- c(1,1,1,0,0,1,0,1,0,0)
x <- c(1,0,0,1,1,0,0,1,1,0)
n <- length(x)
t <- matrix(cbind(y,x), ncol=2)
z = x+y
for(j in 1:length(x)) {
out <- vector("list", )
for(i in 1:10) {
t.s <- t[sample(n,n,replace=T),]
y.s <- t.s[,1]
x.s <- t.s[,2]
z.s <- y.s+x.s
out[[i]] <- list(ff <- (z.s), finding=any (y.s==y[j]))
kk
2011 Jun 02
4
generating random covariance matrices (with a uniform distribution of correlations)
List members,
Via searches I've seen similar discussion of this topic but have not seen
resolution of the particular issue I am experiencing. If my search on this
topic failed, I apologize for the redundancy. I am attempting to generate
random covariance matrices but would like the corresponding correlations to
be uniformly distributed between -1 and 1.
The approach I have been using is:
2012 Feb 25
5
which is the fastest way to make data.frame out of a three-dimensional array?
foo <- rnorm(30*34*12)
dim(foo) <- c(30, 34, 12)
I want to make a data.frame out of this three-dimensional array. Each dimension will be a variabel (column) in the data.frame.
I know how this can be done in a very slow way using for loops, like this:
x <- rep(seq(from = 1, to = 30), 34)
y <- as.vector(sapply(1:34, function(x) {rep(x, 30)}))
month <- as.vector(sapply(1:12,
2012 Feb 18
3
R help
Dear all,
I need to generate numbers from multivariate normal with large dimensions
(5,000,000).
Below is my code and the error I got from R. Sigma in the code is the
covariance
matrix. Can anyone give some idea on how to take care of this error. Thank
you.
Hannah
> m <- 5000000
> m1 <- 0.5*m
> rho <- 0.5
> Sigma <- rho* matrix(1, m, m)+diag(1-rho, m)
2012 Feb 09
3
how to exclude rows with not-connected coalitions
Dear all,
I have question but cannot explain without providing some context first:
I want to calculate how many policy-connected coalitions between 7 parties are possible. I have positions on an one-dimensional scale for each party and I have sorted the parties on the positions (it is sorted from extreme left to extreme right, hence using a left-right scale). A policy-connected coalition
2012 Jul 18
6
taylor expansions with real vectors
Dear list,
I have a big deal concerning the development of a Taylor expansion.
require(Matrix)
e1 <- as.vector(1:5)
e2 <- as.vector(6:10)
in order to obtain all the combinations between these two vectors following
a Taylor expansion (or more simply through a Maclaurin series) for real
numbers.
We have f(x) = f(0) + f'(0)(x-0) + f''(0)(x-0)^2/2! + ? + f^(k)(0)(x-0)^k/k!
2007 Sep 26
1
modifying large R objects in place
I have a C function, which performs a transformation
of a large integer matrix. The matrix may be of size 1.6GB,
so I can have only one copy in RAM and have to modify it
in place. This is possible using .Call and works fine. For
debugging, I need two copies of a smaller matrix and modify only
one of them. This may also be done, for example, by
A <- some integer matrix
B <- A +
2009 Dec 15
3
RFC: lchoose() vs lfactorial() etc
lgamma(x) and lfactorial(x) are defined to return
ln|Gamma(x)| {= log(abs(gamma(x)))} or ln|Gamma(x+1)| respectively.
Unfortunately, we haven't chosen the analogous definition for
lchoose().
So, currently
> lchoose(1/2, 1:10)
[1] -0.6931472 -2.0794415 NaN -3.2425924 NaN -3.8869494
[7] NaN -4.3357508 NaN -4.6805913
Warning message:
In
2012 Mar 01
5
select rows by criteria
Hello,
I am stuck with selecting the right rows from a data frame. I think the
problem is rather how to select them
then how to implement the R code.
Consider the following data frame:
df <- data.frame(ID = c(1,2,3,4,5,6,7,8,9,10), value =
c(34,12,23,25,34,42,48,29,30,27))
What I want to achieve is to select 7 rows (values) so that the mean value
of those rows are closest
to the value of 35
2012 Feb 12
3
DF grouping
Hello Members,
I need to group a data.frame in a a specific way, like shown below,
DF raw is like this,
id col1 col2 score
1 A B 40
2 B C 55
3 C D 4000
4 D E 100
5 E F 300
I want the out put as
List
[1]
A B C
[2]
D E
[3]
F
Basically the split should be based on the DF$score > 200, and all the col1
and col2 values should be
2012 Feb 09
2
AUC, C-index and p-value of Wilcoxon
Dear all,
I am using the ROCR library to compute the AUC and also the Hmisc library
to compute the C-index of a predictor and a group variable. The results of
AUC and C-index are similar and give a value of about 0.57. The Wilcoxon
p-value is <0.001! Why the AUC is showing small value and the p-value is
high significant? The AUC is based on Wilcoxon calculation?
Many thanks,
Lina
1999 Jun 14
1
Repeating entries in log.nmb and log.smb
I'm running Samba on my Sun ultra 1 with Solaris 2.6 and have noticed that
my log.nmb file is growing tremendously. In addition, my log.smb is also
growing but not quite as fast.
The log.nmb has the following entries repeating every few seconds. Since
3/18/99, my log.nmb file has grown to be 22mb.
[1999/06/14 09:13:14, 1] nmbd/nmbd.c:(672)
Netbios nameserver version 2.0.0 started.