Displaying 20 results from an estimated 8000 matches similar to: "acutally a statistics question"
2002 May 14
2
least summed square distance + fit
hi,
I have a matrix (representing original data) that looks e.g. like this
(consider it beeing x,y,z coords):
441 447 0
265 407 0
374 223 0
288 574 0
669 309 0
591 195 0
595 475 0
424 351 0
I get a second matrix (subject data) that is similiar to the above
matrix but it is scaled, translated and rotated (and of course a little
inprecise).
Also I have an
2009 Nov 02
1
Lattice: Saving Plots with Legend
Dear R Users!
I've want to save a lattice "parallel" plot with legend as png:
Plotting with legend works well, but when trying to save the plot there occurs a problem with the legend.
###################################################
require(lattice)
#Some data:
data<-matrix(rnorm(100),ncol=5)
#Plot works
parallel(data)
2002 Oct 29
5
unix environment variables under R
hi,
i am working on a little R-project with a couple od other guys.we use
CVS, but everyone keeps the R-source files in different locations in his
home-directory. of course this causes trouble when sourcing R-files. i
thought a UNIX environment variable could be the solution, but R doesn't
seem to know about the environment variables.
e.g. >> source("$PROJECT/xxx.R")
2010 Dec 01
1
Wiener-Granger Causality Test in R
Hello dudes.
I'm developing VAR analysis based on suggestions made by Horváth in its
paper Canonical Correlation Analysis and Wiener-Granger Causality Tests.
That's the reason I'm looking for if there's any R package to develop Wiener
- Granger Causality Test.
Thanks a lot for your unvaluable help.
Regards from Mexico
[[alternative HTML version deleted]]
2002 Jun 24
1
multiple graphics in separate windows
hi,
I am looking for a possibility to open several graphics in independent
windows (is that the graphics device ?).
up to now, i was only able to generate a graphic, then save it (e.g. as
eps) and then generate a new plot that always overwrites the old
graphic. I am aware of the fact that I can generate multiple plots in a
single graphics window, but this is not what i am looking for ..
2006 Jun 17
5
Having trouble listing tiers of categories
I have categories and sub-categories in a table called "categories".
Every row has a "parent" field to note if the entry is the sub-category
of another (never goes deeper than 1 level).
So there might be something like this:
id | name | parent
1 Dog 0
2 Pug 1
3 Siamese 5
4 Shih Tzu 1
5 Cat 0
6 Wiener Dog 1
7 Persian
2007 Dec 06
2
Any package for deconvolution?
I want to run deconvolution of a time series by an impulse or point-spread function through Wiener filter, regularized filter, Lucy-Richardson method, or any other approaches. I searched the CRAN website and the mailing list archive, but could not find any package for such a deconvolution analysis. Does anybody know an existing R function for deconvolution?
TIA,
Gang
2005 Apr 07
5
apply
Hi,
simple question I guess:
the following line works well:
aveBehav=c(apply(sdata, 2, mean))
However, I would like to pass an argument to the function mean, namely
na.rm=TRUE
Does anyone knows how to do this?
Thanks in advance,
Jan
2003 Aug 20
1
Strange fork-related problem: acutally, virus-related
From: tarkhil@over.ru [mailto:tarkhil@over.ru]
> On Wed, Aug 20, 2003 at 01:12:51PM +0400, tarkhil@over.ru wrote:
> > 10-20 minutes of work. New processes doesn't create anymore, process
trying
> > to fork looks in top having -20 PRI and "temp" STATE. I was unable to
find
>
> I've got infected computers in my network. When ipnat mapping
> table grew to
2001 Jul 20
1
loading .RData on distributed system
Hi, all.
I'm running R on a beowulf system, with software that can take a list of
single-processor jobs and parcel them out over the system. (In case it's
of interest, they're dual pentium 866 machines connected by fast
ethernet.) The administrators of the system found that I was causing a
huge load on the file server, and when they investigated it turned out
that each process was
2002 Oct 29
4
sourcing the content of directories
hi,
is there a way to source all R-files that reside in a given directory
with a single R-call ?
greetinx jan
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !) To:
2007 May 18
1
Trouble compiling XML package
Dear Prof. Lang -
I am trying to install the XML library on a 64-bit SUSE linux system
(version info below) running 2.4.1.
I have gcc version 3.3.3, and libxml2 version 2.6.7. I know this is not
current, but I'm on a machine used and administered by others, and
updating libxml2 would require updating libc, and things get pretty
complicated from there.
Trying to install through R (1.9-0),
2001 Jan 05
1
dyn.load the same code more than once?
Hi. I'm still working on figuring out why some C code that interfaced
nicely with R-1.1.1 is causing segmentation faults in R-1.2.0. Brian
Ripley advised me that R-1.2.0 can be more sensitive to array overruns
than was R-1.1.1, so I'm looking for overruns. But in the course of
running R with a debugger I've come across something else.
Without thinking about it much, I put the
2001 Oct 30
2
moving dimnames when reassigning
Hi, all.
I've got a question that arose when I was switching some row and columns in
a matrix. I was expecting the row and column names to follow their rows and
columns, and they didn't. I think I see some logic to the behavior, but I'm
not sure whether it's intentional or not, so I thought I'd ask the list
whether this is a feature or a bug.
Here's an example (R-1.3.1,
1999 Feb 16
3
graphics bug: type="l" (PR#120)
The following commands illustrate a problem with graphing relatively large
data sets using the "line" option to plot:
temp <- runif(200000) # or whatever other numbers you like;
# same thing happens with a sine wave
plot(1:200000, temp) # everything fine
plot(1:200000, temp, type="l") # data gets cut off
The number of points isn't crucial. The cutoff point
1999 Jan 06
2
ESS or R problem editing functions
Hi, all.
I'm not sure whether this is a problem with ESS or R (or even a feature I
don't understand!).
Say I've got a function named f.count.these.patterns (as I do -- I'm using
actual names in case they're somehow important). I previously had a
version called f.count.these.patterns.3, but discarded it because it was
worse. So the function is no longer there. If I create a
2003 Dec 03
1
Error in randomForest.default(m, y, ...) : negative lengt h vectors are not allowed
Christian --
You don't provide enough information (like a call) to answer this. I
suspect, though, that you may be subsetting in a way that passes
randomForest no data.
I'm not aware offhand of an easy way to get this error from randomForest. I
tried creating some data superficially similar to yours to see whether
something would break if there were only a single value in the variable
2006 Aug 25
1
Plot y ~ x under condition of variable a and b [Broadcast ]
It's the "|source" in your formula that tells lattice to separate them.
If you drop that, you'll get all points without S and P distinguished at
all. If you add a groups argument, you should get them presented with
different colors/symbols/etc. depending on your trellis settings (warning:
untested code):
par.plot(lnvol~lnden, groups =
1999 Apr 15
2
regression with uncertainty in both variables
Hi, all.
I'm trying to use some linear regression models in which both the
dependent and independent variables are measured with some error. To
make things worse, while the errors in the dependent variable are uniform,
the errors in the independent (or explanatory, or "x") variables can be
heteroskedastic. I've been looking at the book _Measurement Error Models_
by Fuller
2001 Nov 29
2
memory issue trying to solve too large a problem using hclust
Hi, all.
I'm trying to cluster 12,500 objects using hclust from package mva. The
distance matrix takes up nearly 600 MB. The distance matrix also needs to
be copied when being passed to the fortran routine that actually does the
clustering (it's modified during the clustering), so that's 1200 MB. I'm
actually on a machine with 2.5 GB of memory (and nothing else running), so I