Displaying 20 results from an estimated 120 matches similar to: "Help with 'memory not mapped'"
2007 Jan 12
1
wafer map drawing
Hello R-Users!
Does anyone know of a package to draw/analyze silicon wafer maps?
Here are some examples
http://www.java2s.com/Code/Java/Chart/JFreeChartWaferMapChartDemo.htm
http://dp.pdf.com/site/products/wafermap/binmap.html
I've google'd and searched CRAN with no luck.
It seems possible for R, given the hexbin and hist2d graphs I saw at the
Graph gallery.
2001 Mar 14
1
SSH and AFS
I'm sorry, but I've been looking in the archives, and I can't find an answer to this question.
I believe OpenSSH supports AFS, but I can't seem to make it work.
I've tried to install krb5-devel, but it doesn't work. I've made configure --with-kerberos4 --with-afs, and it says it can't find krb.h.
Did anyone manage to compile openssh 2.3.0 with AFS? Which kerberos
2010 May 24
0
Bug#578173: confirm
I can't resolve this bug, but I can finally use lenny 64 to full capacity in xen, which doesn't help the bug.
I acquired xen-3.3.3 months ago, but couldn't manage to work my way through the missing header files to install xen-tools.
After all this time, I revisited it and installed xen-3.3.3, quite a leap from 3.2.1.
Not too surprisingly, the deficit has disappeared, and the vnc
2005 Nov 03
0
problems with pan(): Indizierung ausserhalb der Grenzen = subscript out of bounds
Dear alltogether,
I tried pan() to impute NAs for longitudinal data.
The terminology in the following output follows the pan manpage. No data
are attached to this script as this may be too huge.
y = 15 responses
pred = at first just intercept was tried (later on covariates should follow)
subj = 168 different subjects with 4 to 6 observations for each subject
at time points t1, t2, ..., t6
#
2008 Apr 05
2
Adding a Matrix Exponentiation Operator
Hi all
I recently started to write a matrix exponentiation operator for R (by
adding a new operator definition to names.c, and adding the following code
to arrays.c). It is not finished yet, but I would like to solicit some
comments, as there are a few areas of R's internals that I am still feeling
my way around.
Firstly:
1) Would there be interest in adding a new operator %^% that performs
2000 Aug 29
1
Newbie question: Linear regression with error bars.
Hello guys,
I am a total newbie on R, having downloaded it, read the documentation and
started playing with it right now.
My general question is what 'lr' model can be used for doing a linear
regression on points that have a variance associated with them (ie. Monte
Carlo simulation results).
Actually my Data sets look like:
Timestep Energy Variance_of_the_Energy
0.0005 -14.876840
2010 Nov 10
2
Parallel code runs slower!
My parallel code is running slower than my non-parallel code! Can someone
pls advise what am I doing wrong here?
t and tTA are simple matrices of equal dimensions.
#NON PARALLEL CODE
nCols=ncol(t)
nRows=nrow(t)
tTA = matrix(nrow=nRows,ncol=nCols)
require(TTR)
system.time(
for (i in 1:nCols) {
x = t[,i]
xROC = ROC(x)
tTA[,i]=xROC
}
)
user system elapsed
123.24 0.07 123.47
#
2003 May 01
2
What' wrong?
I try to do single proportion test on my category data. Here is my R
script:
library("ctest")
catSignifTest <- function( catFile ) {
###############################################################
## Get the data sets from text file
catData <- read.table( catFile )
ncols <- length(catData)
nrows <- length(catData[,1])
ncol1 <- ncols - 1
probeNbr
2011 Apr 18
2
Avoiding loop
Hi everyone.
I'm using matrix product such as :
#Generate some data
NCols = 5
NRows = 5
A = matrix(runif(NCols*NRows), ncol=NCols)
B = matrix(runif(NCols*NRows), ncol=NCols)
#First calculation
R = A%*%B
for(i in 1:100)
{
R = R%*%B
}
I would like to know if it was possible to avoid the loop by using something
like mapply or anything else.
Tx in advance,
Phil
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2010 Jun 10
3
Retrieving the 2 row of "dist" computations
Dear R Gurus,
As you probably know, dist calculates the distance between every two rows of
data. What I am interested in is the actual two rows that have the least
distance between them, rather than the numerical value of the distance
itself.
For example, If the minimum distance in the following sample run is d[14],
which is .3826119, and the rows are 4 & 6. I need to find a generic way to
2000 Apr 01
1
Bug ? mine or ? in R core
Dear R Gurus,
I would very much appreciate some help with this code snippit
from my RODBC package.
R crashes or exhibits bizarre behaviour when repeatedly fetching
large numbers of rows.
Examples:
> odbcFetchRows(0,max=50000)->xx
> odbcFetchRows(0,max=50000)->xx
> odbcFetchRows(0,max=50000)->xx
> odbcFetchRows(0,max=50000)->xx
> odbcFetchRows(0,max=50000)->xx
3rd
2019 Mar 12
3
as.data.frame.table() does not recognize default.stringsAsFactors()
Reporting a possible inconsistency or bug in handling stringsAsFactors in as.data.frame.table()
Here is a simple test
> options()$stringsAsFactors
[1] TRUE
> x<-c("a","b","c","a","b")
> d<-as.data.frame(table(x))
> d
x Freq
1 a 2
2 b 2
3 c 1
> class(d$x)
[1] "factor"
>
2018 Jul 16
2
Memory leakage from large lists
Hello,
I am experiencing a very noticeable memory leak when using large lists of
large data. The code below creates a list of matrices, yet the memory does
not free up after removing that item and performing a garbage collection.
Is there a something I can do to prevent this memory leak? Any help would
be greatly appreciated. By the way, if you execute the code, please run it
in a new R session.
2013 Jan 16
1
dendrogram stops!
Dear I am using the 'as.dendrogram' function from the 'stats' library to convert from an hclust object to a dendrogram with a dataset of size
~30000 (an example code is below). I need the dendrogram structure to
use the "dendrapply" and "attributes" functions and to access the child
nodes, I do not need any of the plot properties.
The problem is that it
2011 Aug 24
3
Efficient way to Calculate the squared distances for a set of vectors to a fixed vector
I am pretty new to R. So this may be an easy question for most of you.
?
I would like to calculate the squared distances of a large set (let's say 20000) of vectors (let's say dimension of 5) to a fixed vector.
?
Say I have a data frame MY_VECTORS with 20000 rows and 5 columns, and one 5x1 vector y. I would like to efficiently calculate the squared distances?between each of the 20000
2004 Feb 26
6
adding header info to write.table
Hello,
Could someone please tell if there is a way to append header info to the top of an exported dataframe (exported with write.table). I want to append the following, which are the defininitions for an asciigrid:
ncols 532
nrows 999
xllcorner 510465
yllcorner 4766375
cellsize 30
NODATA_value -9999
Thanks very much,
femke
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2010 Sep 06
2
rbind() overwriting data.frame()
Hi,
first off, I wanna ask how do I declare a data.frame of 0 rows and n
columns?
Coming to my problem,
I have a data.frame of 22 columns by dynamic rows which I insert using
rbind. The total number of rows could go upto 2,00,000. The problem is that
after about 800 or 900 get inserted rbind starts overwriting the data.frame
and I end up with a total of 800-900 rows. What is up with that?
The
2001 Sep 20
0
G-test : log-likelihood ratio test
I've written a g.test() aka log-likelihood ratio test function for my
opwn use. It's something I've seen requested (and looked to find
myself) on this list a few times.
It has the same basic syntax as chisq.test().
It does both goodness of fit tests and tests of independence.
Yates' and Williams' corrections are implemented.
I've put some examples from Sokal & Rohlf
2002 Mar 20
3
tex/latex output?
Is it possible to write the output/results (redirect) to a latex file?
Jeff.
Jeff D. Hamann
Hamann, Donald & Associates, Inc.
PO Box 1421
Corvallis, Oregon USA 97339-1421
Bus. 541-753-7333
Cell. 541-740-5988
jeff_hamann at hamanndonald.com
www.hamanndonald.com
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2010 Jul 25
2
3d topographic map
Hi All-
I would like to create a 3d topographic map using lat/lon and
z(height). I have been scouring the R help pages and have not located
the package I am looking for. Does anyone have a suggestion of package
that will work for this?
thanks-
sherri