Displaying 20 results from an estimated 900 matches similar to: "statistical help"
2001 Mar 21
3
memory allocation error
Hi,
I have recently installed R-1.2.2 for windows (16MB RAM, P-166) and I
getting the following message after processing my data (6 variables and
1200 observations):
>Error: cannot allocate vector of size 4 Kb
>In addition: Warning message:
>Reached total allocation of 15Mb: see help(memory.size)
Then, the program close.
With the last version, 1.1.1 (I think) I didn't have this
2001 Sep 25
2
extracting columns from a ts series
Hi All,
I have a time series called 'upwelling', like this:
>upwell
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov
1984 494.7 303.7 220.8 288.4 188.1 125.5 215.7
1985 56.0 127.4 165.8 189.4 261.6 223.7 186.3 150.2 107.8 120.3 91.1
from 1984 until 2000. How do I could extract, i.e, Jan or Dec columns from
the data? Or how do I
2001 May 11
1
output from STL
Hi All,
How do I can create a new vector, i.e. 'seasonal' or 'trend' from the
resultant seasonal or trend component of the Time.Series object produced by
STL, and how I could superpose in the same graphic, i.e. original data and
trend or seasonality?
Thanks in advance!
Antonio
Antonio Rodr?guez Verdugo
CICEM Agua del Pino
Huelva
Oceanography and Coastal Resources,
PhD Program,
2001 Mar 03
2
Image files in R
Does anyone have experience importing image files into R? I would like to be able to import such files, use R to analyze and compare and perhaps export again a modified file which can be displayed by the usual image display programs.
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2002 Aug 06
2
help with lagged scatterplot
Hi,
How do I can make a lagged scatterplot of two variables:
Yt (nao) versus Xt-h (mei)
if they have the following structure:
>series
mei nao
Jan 1950 -1.036 0.55
Feb 1950 -1.133 3.31
Mar 1950 -1.259 0.81
Apr 1950 -1.027 1.60
May 1950 -1.399 -1.73
Jun 1950 -1.366 1.26
Jul 1950 -1.300 -0.87
.
.
.
I've tried with lag.plot but I don't understanf how to use it
Thanks in
2001 Apr 06
2
NA's values and ts
Hi,
I have a data frame with 13 time series (same length). Two of them have
several NA's values, so when I've tried to run:
>acf(flow, na.action=na.omit)
I get
>Error in na.omit.ts(as.ts(x)) : time series contains internal NAs
I've read through help files of acf, na.action, na.omit, and I don't
understand how to manage NA's values.
If I list the variable (eg: rain,
2001 Jun 26
5
breaks in hist()
I was using the hist() function to create a frequency table of some network
traffic data. The range in values is rather large, from 0 till just under
10e12. Calling hist(x, breaks=c(0,1000,1e6,1e9,1e12),plot=F,freq=T) causes
hist() to return :
$breaks
[1] -1.0000e+05 1.0100e+05 1.1000e+06 1.0001e+09 1.0000e+12
Is this recalculation of the breaks by hist() intended?
Maarten van Gelder.
2001 Jun 14
1
License for KernSmooth?
According to the CRAN contributed packages page, the license for "KernSmooth" is
*not* GPL. It is listed as "License: Unlimited distribution (from Dr Wand)."
Are there any restrictions on this of any kind? Is there some written license
document similar to the GPL license? The reason I'm asking is that the legal
beagles in the company I work for are extremely paranoid about
2001 Apr 07
0
more about ts and NA's
Hi,
I've seen that handle missing values makes difficult to manage data series
within R. I've look at Shumway's program (ASTSA) and Brockwell & Davis
pogram (ITSM), it seems that both handle NA's values without problem, or
maybe, I'm getting an spurious results?
My problem is with two variables: rain and river flow: the first has 7 NA
values (is to say, seven months, non
2001 May 13
1
test for bimodality
Dear R users,
I'm looking for a test of bimodality in order to make some decisions about how to procede with an analysis algorithm. I have not come across any such tests in my readings and discussions apart from the Rao which appears to be applicable to cyclic data.
The data I'm interested in characterizing as uni- or bimodal are frequency x amplitude spectra of consonant speech sounds,
2001 Sep 24
1
2D fft DC shift
Hi Everyone,
Does anyone know how to take the output of a 2D fft()
and shift the DC component to the center? Is there a
function that does that?
if you know, please send me an email.
thanks for any help!
brad
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2001 Oct 23
1
status of US mirror
When I try to go to
http://cran.us.r-project.org
I get sent to a location called "domains 4 sale" or something of that ilk,
indicating that some "URL scavenger" has flagged it as expired. Has something
happened, or is it just wishful thinking on some scavenger's part that the
URL is no longer pointing to the US CRAN mirror?
Try this link:
2001 Apr 30
1
PR #927 -- R crash on huge CSV file (PR#928)
I tried to run the same dataset with R-1.2.3 on Linux, compiled from the
source tarball. After 7 hours, it was still grinding away and had not
crashed. I had to kill it. "gtop" was showing it with a real size around 160
MB, same as the peak on the Windows 2000 environment. This is on the same
hardware as the Windows run; my machine is dual-booted Windows 2000 and Red
Hat Linux 7.1. If I
2001 Oct 01
3
save plot graph
Dear all,
I have a lot plot graphs and i would like to save them.
One solution is to use the grab function with xv.
But it is tedious....
So is there a R function that can save automatically
the result of a plot in a gif or ps or bmp file
Thanks
Olivier
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Olivier MARTIN phone: (33) 04 76 61 53 55
Projet IS2
2001 Feb 01
1
R works in KDE but not in Gnome
I have a Red Hat 7.0 system, plus glibc-2.2 and gcc-2.96.69. When I run the
R demo 'demo("graphics") with KDE it runs fine, but when I try it with Gnome
it croaks:
demo(graphics)
---- ~~~~~~~~
Type <Return> to start :
> opar <- par(ask = interactive() && (.Device %in% c("X11",
"GTK", "windows", "Macintosh")))
2001 Mar 14
2
scan
Hello, I have a problem. I have to read a HUGE file which has to be
line processed, so I would like to use scan like
p <- scan(pfile,what=c(0,0,0,"",0,""),nlines=1)
but it continues to read the first line, so I have to add a skip and
increment the skip after each read.
It takes forever to read a test file of 1 Mb, the real one is in 60's Mb
Is there a way to read line
2002 Nov 05
2
eigenvectors order
Hi,
How the eigenvectors output by the eigen() function are ordered. The
first column corresponds to the largest eigenvalue? or is the last
column as in Octave?
I'm performing a spatial-temporal analysis of some climatic variables
so my matrices are MxN (locations*time)and I'm looking for the leading
EOF's. As I have understand the eigenvectors columns represent those
EOF's
2001 Apr 28
2
Modulus operator??
I'm trying to do a modulus operator in R-1.2.2 on Windows -- specific
version:
R : Copyright 2001, The R Development Core Team
Version 1.2.2 Patched (2001-03-22)
Here's what the R language manual says:
"R contains a number of operators. They are listed in the table below.
[snip]
% Modulus, binary"
Here's what happens on the R console:
> records <- 100000
>
2001 Mar 13
3
gc() shrinks with multiple iterations
Is it expected behavior for gc() to return shrinking values as it gets
called multiple times? Here's what I've got:
> gc()
used (Mb) gc trigger (Mb)
Ncells 221754 6.0 467875 12.5
Vcells 3760209 28.7 14880310 113.6
> gc()
used (Mb) gc trigger (Mb)
Ncells 221760 6.0 467875 12.5
Vcells 3016206 23.1 11904247 90.9
> gc()
used (Mb) gc
2003 Nov 12
2
Formatting axis label numbers on plots
Is there any way to control the format of the axis label numbers on a
plot? More specifically, I have some plots that get axes with label
numbers in exponential format, and I'd like to change that to
non-exponential. Thanks!!
--
M. Edward (Ed) Borasky, MS, MNLP, NST, FBG, PGS & PTA
znmeb at borasky-research.net
http://www.borasky-research.net