Displaying 20 results from an estimated 4000 matches similar to: "Row-binding factor variables looses the ordered attribute."
2002 Apr 29
3
Organizing the help files in a package
Dear all!!
I am using R1.4.1 on windows 98.
I had been trying to organize the package and has already been able to
document some of the functions in to .Rd (R documentation) files. From these
.Rd files I generated plain text files as well as html files.
I have also given the 00Index file in each of the directories:
html/
help/
data/
man/
Problem: I don't get the help using comand
2002 Apr 01
3
svd, La.svd (PR#1427)
(I tried to send this earlier, but it doesnt seem to have come through,
due to
problems on my system)
Hola:
Both cannot be correct:
> m <- matrix(1:4, 2)
> svd(m)
$d
[1] 5.4649857 0.3659662
$u
[,1] [,2]
[1,] -0.5760484 -0.8174156
[2,] -0.8174156 0.5760484
$v
[,1] [,2]
[1,] -0.4045536 0.9145143
[2,] -0.9145143 -0.4045536
> La.svd(m)
$d
[1]
2002 Apr 16
2
multiple plot devices
Hello,
sorry but i found no way or help to work
with multiple graph devices (Rdocs,SearchIndex).
When is use the function only the graphic device of the last variable is open.
How is it possible to let the several plot-device open or save this in a file with different names ?
(win 2000 - R1.4.1)
thanks for advance
& regards,Christian
normal <- function(x) {
par(mfrow=c(2,2))
2002 Apr 01
1
An introduction to R (PR#1426)
(I sent this earlier, but it seems not to have come through, due to
problems witkh my system)
The following command from appendix A, "a sample session", isnt correct:
contour(x, y, fa, nint=15)
when used R protests:
Warning message:
parameter "nint" couldn't be set in high-level plot() function
it should probably be nlevels, as used a few lines before.
This is
2002 Mar 29
1
memory error with rpart()
Dear all,
I have a 100 iteration loop. Within each loop, there are some calls
to rpart() like:
ctl <- rpart.control(maxcompete=0, maxsurrogate=0, maxdepth=10)
temp <- rpart(y~., x, w=wt, method="class", parms=list(split="gini"),
control=ctl)
res <- log(predict.rpart(temp, type="prob"))
newres <- log(predict.rpart(temp, newdata=newx,
2002 Apr 25
1
Rdbi package and PgSQL
I can use the Rdbi package to connect to a PostGreSQL server fine but
when I use the dbDisconnect(), I get a segmentation error and it throws
me out of R. I'm using RH7.2, R1.4.1, Rdbi 0.1-2, and Rdbi.PgSQL 0.1-2.
Anyone else seen anything like this and have an possible answer?
Andrew Schuh
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing
2003 Feb 06
1
rdbi segmentation fault (fwd)
one more bit of information about this problem. If I start R as the
user "postgres" i dont have the segmentation fault.
---------- Forwarded message ----------
Date: Wed, 5 Feb 2003 19:19:39 -0500 (EST)
From: Rafael A. Irizarry <ririzarr at jhsph.edu>
Reply-To: rafa at jhu.edu
To: "R-Help (E-mail)" <r-help at r-project.org>
Subject: rdbi segmentation fault
hi! i
2002 Jan 08
2
installing R-1.3.1 on Solaris 2.6
Hi All,
I am trying to install R1.3.1 on solaris 2.6 using the gcc/g77 compiler.
The configure step succeeded, but make failed. The compiler versions I used
are:
gcc version 2.95.2 19991024 (release)
g77 version 2.95.2 19991024 (release)
CC workshop Compilers 5.0 98/12/15 C++ 5.0
I can't use the c++ compiler(v2.95.2), since it failed the configure step. I
can't use f77 either,
2003 Oct 16
2
Managing memory on R
Hi,
I have a problem with the memory size within R. I would like to know if
there is any may for getting back free memory during a R session. I've tried
with rm and gc but it still craches. I am working on windows R1.3.1.
I know I have big datasets, but during my study, some results are temporary,
and I would like to get back the memory allocated to this temporary object
as soon as I remove
2002 Jan 23
1
No subject
Dear R People:
Here is a very simple question, please:
I have a data frame with the state name, state division, and population.
Note: state division is something like Atlantic, Mountain, etc.
I want to produce a table with the state division and the total of the
populations for the states within that division.
I've been messing with "table" but so far, no luck.
This is R1.3.1,
2002 Jan 24
1
RE:
Hello,
Although your message is not very explicit about the structure of your data
frame,
I think you can get what you want by using a combination of the function
"split" and
the "apply" functions family: apply, lapply and sapply.
If you provide a more detailed organization of your data frame, perhaps we
can give
to you a more wiser advice.
Thanks,
Carlos.
P.S: By the way,
2012 Mar 12
3
how to calculate a variance and covariance matrix for a vector
Hello,
I have a vector {a, b1, b2, b3, b4}. How can I calculate the following
matrix:
var(a) cov(a, b1) cov(a, b2) cov(a, b3) cov(a, b4)
cov(a, b1) var(b1) cov(a, b2) cov(a, b3) cov(a, b4)
...
...
cov(a, b1) cov(a, b2) cov(a, b3) cov(a, b4) var(b4)
I would very appreciate your inputs. Thank you very much.
Sincerely,
Jialin Huang
[[alternative HTML version deleted]]
2012 Jun 16
2
How to specify "newdata" in a Cox-Modell with a time dependent interaction term?
Dear Mr. Therneau, Mr. Fox, or to whoever, who has some time...
I don't find a solution to use the "survfit" function (package:
survival) for a defined pattern of covariates with a Cox-Model
including a time dependent interaction term. Somehow the definition of
my "newdata" argument seems to be erroneous.
I already googled the problem, found many persons having the
1998 Nov 19
1
list assignment
There appears to be a problem with name matching in list assignment:
Version 0.63.0 (November 14, 1998)
...
> r <- list()
> r$forecast.cov.trend <- 1:12
> r$forecast.cov.zero <- 1:12
> r$forecast.cov <- 1:2
> length(r$forecast.cov)
[1] 0 #should be 2
>
But note that this works correctly:
> r <- list()
>
2005 Jun 24
1
Mahalanobis distances
Dear R community
Have just recently got back into R after a long break and have been amazed at
how much it has grown, and how active the list is! Thank you so much to all
those who contribute to this amazing project.
My question:
I am trying to calculate Mahalanobis distances for a matrix called "fgmatrix"
>dim(fgmatrix)
[1] 76 15
>fg.cov <- cov.wt(fgmatrix)
2014 Feb 21
6
[LLVMdev] make check issue with llvm-cov
rkotler at mipsswbrd006-le:~/caviumllvm/build/test$ make
Making LLVM 'lit.site.cfg' file...
Making LLVM unittest 'lit.site.cfg' file...
( ulimit -t 600 ; ulimit -d 512000 ; ulimit -m 512000 ; ulimit -s 8192 ; \
/usr/bin/python /home/rkotler/workspace/llvm/utils/lit/lit.py -s
-v . )
XPASS: LLVM :: tools/llvm-cov/llvm-cov.test (8916 of 9784)
******************** TEST
2002 Feb 22
1
Avoiding the mean
Dear list,
what is the fastest way to compute a multivariate mean and cov-matrix? I
presume that the mean is computed in cov, so it may be a waste of time to
compute the mean first and then a second time inside of cov. Is it faster
to use cov.wt, which gives cov-matrix and center?
And: If mean and cov should be computed on a part of the data, is it faster
to use cov.wt with some weights zero, or
2001 Mar 14
0
segmentation fault of unknown cause (PR#877)
Dear all,
Paulo Ribeiro, p.ribeiro@lancaster.ac.uk, and myself noticed
that R sometimes breaks down with a segmentation fault of
(at least for us) unknown course. (We've read #411 and #671
in the bug report on "optim" -- the problem described
there sounds familiar; but we have not found any hint on a
segmentation fault.)
Please find at the very end of this email the file
2010 Sep 05
0
cov.unscaled in NLS - how to define cov.scaled to make comparable to SAS proc NLIN output - and theoretically WHY are they different
I am running a 3-parameter nonlinear fit using the default Gauss-Newton
method of nls.
initialValues.L = list(b=4,d=0.04,t=180);
fit.nls.L = nls(
myModel.nlm ,
fData.L,
start = initialValues.L,
control = nls.control(warnOnly = TRUE),
trace=T
);
summary.nls.L = summary(fit.nls.L);
I run the same analysis in SAS proc NLIN.
proc nlin data=apples outest=a;
parms b=4 d=.04 t=180;
model Y =
2010 Dec 21
0
Odp: For-loop
>Hi Petr,
>
>thank you, I got it. In fact I was looking for the function aggregate() which I didn't know.
>
>aggregate(x = t(data), by = list(cov$Month, cov$Area), FUN = "sum")
>
>that is doing exactly what I need.
>
>Anne
>-----Urspr?ngliche Nachricht-----
>Von: "Petr PIKAL"
>Gesendet: 20.12.2010 14:23:50
>An: "Anne-Christine