similar to: silly question about spec

I am reading some documentation about Cross Spectrum Analysis as a technique to compare spectra. My understanding is that it estimates the correlation strength between quasi-periodic structures embedded in two signals. I believe it may be useful for my signals analysis. I was referred to the R functions that implement this type of analysis. I tried all the examples which generated a series of

Sorry for the off-topic question, but I know there are some talented LaTeX users out there. Which bibliography style gives only the year in text citations (e.g "for further details, see Anderson (1992)" )? Thanks Jason -- Indigo Industrial Controls Ltd. http://www.indigoindustrial.co.nz 64-21-343-545 jasont at indigoindustrial.co.nz

I downloaded and installed R-1.3.1 yesterday, and had to change line 2 of the "packages.html" file in $RHOME/doc/html/ The configuration steps were "the usual", tar zxvf ... cd ... ./configure make make check make install If it's relevant, Sys.info() sysname release "Linux" "2.2.14"

Thanks to Rolph Turner and Jason Turner ... I guess I was too excited about getting back on the list after an absense of several years ... I'll be a little more thoughtful about the problem before posting next time, and a little less trigger-happy with the "Send" e-mail button. Never-the-less, much appreciated. - Mohamed -----Original Message----- From: Rolf Turner

I sent this to the list last week, and haven't seen it pop up. Either I deleted it when it did appear, or possibly it was destroyed as spam...? If it did appear and I somehow missed it, appologies. In a nutshell, can the function FUN supplied to by() deduce what level of factor by() was on when FUN was called? I've been digging through the functions, and can't see where the

Putting a space between the commas makes no difference when I try it. -- Chris Wild >Putting a space between the commas works. I think it's ugly, though. >Does anyone have a better idea? > >Jason >-- >Indigo Industrial Controls Ltd. >64-21-343-545 >jasont at indigoindustrial.co.nz -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help

My question is: is there a way for Rtangle() to *not* print re-used code chunks? It'd be easy enough to brew up a perl script to do just this, but if methods exist already, I'd rather use them. My reading of the help pages and FAQs has missed something, if it's there. Background: I have course notes on R, written using Sweave. I want to provide the R code separately so the

Dear all, Our department uses the linux system and we are not allowed to submit job directly. We must make a batch to submit through "qmon". so, I make a foo.sh file, which only contains one line: nohup R --vanilla < foo.txt > foo.results foo is all my codes. It is a simulation of 200 times. I set the seed at the beginning. It is to estimate the success probability, which is

Probably doing something wrong here. I'm getting an empty file called "Rplot.ps" when I do this: > foo<-rnorm(100) > postscript() > boxplot(foo) System info: Version: platform = i586-pc-linux-gnu arch = i586 os = linux-gnu system = i586, linux-gnu status = major = 1 minor = 2.2 year = 2001 month = 02 day = 26 language = R Search Path: .GlobalEnv,

I am having a hard time interpreting the phase and coherency plots. x is two timeseries that occur at the same time i.e. a b 1 11.2 12.3 16 11.3 12.4 31 11.4 12.5 46 11.5 12.6 ...etc even though my example is does not show this they are oscillating at more or less the same frequency just shifted by t=x (imagine two sine waves offset with the 2nd sine

Greetings, I would like to estimate a spectral coherence between two timeseries. The stats : spectrum() returns a coh matrix which estimates coherence (squared). A basic test which from which i expect near-zero coherence: x = rnorm(500) y = rnorm(500) xts = ts(x, frequency = 10) yts = ts(y, frequency = 10) gxy = spectrum( cbind( xts, yts ) ) plot( gxy $ freq, gxy $

strptime() mysteriously adds a day to a date, unless the year is specified. Tested on: Linux (RedHat 6.0) - R version 1.4.1 and R-devel. Windows - R version 1.4.1 Bug isn't found on OpenBSD, R version 1.4.1. Transcript: R : Copyright 2002, The R Development Core Team Version 1.4.1 (2002-01-30) ... > ## BUG: > ## strptime seems to add a day to the request, unless the year > ##

Hi, I am having problem with R misinterpreting (x,y) values in image(). I downloaded the followiing binary version of R: > version _ platform i686-pc-linux-gnu arch i686 os linux-gnu system i686, linux-gnu status major 1 minor 3.0 year 2001 month 06 day 22 language R > q() [janef@cc-jainlabx1 Poster.tahoe]$ gcc -v Reading specs from

Hello everybody I'm trying to write a simple version of matlab's "quiver". The idea is that I have fluid with velocity defined on a grid. I have a matrix of x-components of velocity and a matrix of y-components and I want to see the overall flow pattern. (I work with 2D fluid mechanics problems). My first-stab function is below: quiver <- function(u,v,scale=1) # first

Whoops. Found it at my favorite site... (modifications courtesy of Frank Harrell) http://finzi.psych.upenn.edu/R/Rhelp/archive/10946.html I'm pleading decaf as an excuse for not thinking of it sooner. Now returning you to your regularly scheduled mailing list. Jason -- Indigo Industrial Controls Ltd. 64-21-343-545 jasont at indigoindustrial.co.nz

Just starting with lattice & grid, so pardon if this question scrams of someone still wrapping their head around it. (Paul Murell, Deepayan Sarkar, et. al - great package!). Is it possible to set an equivalent of the "range" argument to boxplot() when using bwplot()? Cheers Jason -- Indigo Industrial Controls Ltd. 64-21-343-545 jasont at indigoindustrial.co.nz

Newbie question: When upgrading (currently doing 1.1.1 to 1.2.1), do I have to rebuild all packages as well? For example, I use RODBC and netCDF a lot. Thanks Jason -- Indigo Industrial Controls Ltd. 64-21-343-545 jasont at indigoindustrial.co.nz -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read

Hi all I'm trying to create a three-dimensional wireframe-type plot, much like the screenshot shown at http://www.r-project.org/screenshots/volcano-persp.jpg In my case, I'm trying to show a density estimate of two-variable system, using the GenKern package. I've used the image() and contour() to create a nice shaded plot, but I've found a 3d plot is often easier for the

I'm having some trouble figuring out latest.start in the tframe package. The results seem a bit cloudy. Sample session: > library(ts) > library(tframe) Loading required package: syskern > t1<-ts(c(1,2,3,4,5),start=1) > t2<-ts(c(1,2,3,4,5),start=2) > earliest.start(tbind(t1,t2)) [1] 1 1 > earliest.start(tbind(t2,t1)) [1] 1 1 > latest.start(tbind(t2,t1)) [1] 1 1

Found one that stumped me. I did a search on R-bugs for the string "d-p-q-r-tests", and found zero entries in all categories (I don't think I secretly gave it a regex). Did the usual configure, make, make check on OpenBSD 3.0, and encountered this message on d-p-q-r-tests.Rout: running code in `d-p-q-r-tests.R' ... OK comparing `d-p-q-r-tests.Rout' to