similar to: how to take this experiment with R?

the following the the lower.tri matrix in a file named luxry.car and i want to read it in R as a lower.tri matrix.how can i do? i have try to use help.search("read"),but no result what i want. 1.000 0.591 1.000 0.356 0.350 1.000

i want to study R programming by studying the existing code from R itself,but i don't know how to read the code,can any one give me some guide? my R is installed in /usr/lib/R/ [ronggui at mylinux ronggui]$ /usr/lib/R/ afm bin doc etc include library modules share > version _ platform i586-mandrake-linux-gnu arch i586 os linux-gnu system i586,

is there any existing function for computing condition index? " analysing multivariate data" say that we can use condition index to check multicollinearity.saying that we can get it via SVD. The elements of the diagnoal matrix are the standard deviations of the uncorrelated vectors. the condition index is the ratio of the largest of these numbers to the smallest. so if i have a data

Hi, after starting Emacs/ESS/R environment I tried to launch "edit" or "fix". This normally should fire up the $editor, isn't it. Instead of this I regularily I run into an error that there something wrong with $editor. ----------------------------------------------- > op <- options(); str(op) Amongst many entries you'll find this: $ editor

hi I got the following error in 'evtree'. could u help pl. Error in if (var(mf[, nVariables]) <= 0) stop("variance of the denpendent variable is 0") : argument is of length zero [[alternative HTML version deleted]]

i am new to R,so i post here to ask you how to learn R quickly? is there some usefull materials about using R. ps:though the manual is a good materials,but it is not the best for a newbie,i think. thank you !

when i use barplot ,it seems there is sth wrong with it. my command are: > beer = scan() 1: 3 4 1 1 3 4 3 3 1 3 2 1 2 1 2 3 2 3 1 1 1 1 4 3 1 26: Read 25 items > barplot(table(beer)) but it does NOT produce what i want. > version _ platform i386-pc-mingw32 arch i386 os mingw32 system i386, mingw32 status major

hi, i am using the RODBC package to read excel files using odbcConnectExcel and susequently sqlFetch to read the contents of the file. the file that i use is just a matrix of numbers thats all. no headers and column names. what happens is that the sqlFetch is not reading my first row of numbers. i have tried different combinations of colnames and rownames logical values but that first row is not

This defines __smp_xxx barriers for x86, for use by virtualization. smp_xxx barriers are removed as they are defined correctly by asm-generic/barriers.h Signed-off-by: Michael S. Tsirkin <mst at redhat.com> Acked-by: Arnd Bergmann <arnd at arndb.de> --- arch/x86/include/asm/barrier.h | 31 ++++++++++++------------------- 1 file changed, 12 insertions(+), 19 deletions(-) diff --git

hi,usRs,i am studing the R programming,but i can not get the point abut the difference between UseMethod and NextMehod.i have read the manual and try to find the solutin from internet,but i still not master it well.so anyone can give me a guide?it will be better to show some examples . thank you !

i have data fame da: > da x y 1 1 a 2 2 a 3 3 a 4 4 a 5 5 a 6 6 b 7 7 b 8 8 b 9 9 b 10 10 b > str(da) `data.frame': 10 obs. of 2 variables: $ x: num 1 2 3 4 5 6 7 8 9 10 $ y: Factor w/ 2 levels "a","b": 1 1 1 1 1 2 2 2 2 2 and i want to generate new variable da$z,when y=="a",da$z=da$x-mean(x[y=="a"]) ,when

entercount an error with demo(scoping). > demo(scoping) demo(scoping) ---- ~~~~~~~ ___snip_____ > ross$balance() Your balance is 120 > try(ross$withdraw(500)) Error in ross$withdraw(500) : You don't have that much money! > version _ platform i486-pc-linux-gnu arch i486 os linux-gnu system i486, linux-gnu status beta major 2 minor

If I do not make a mistake,the partial association model is an extension of log-linear model.I read a papers which gives an example of it.(Sloane and Morgan,1996,An Introduction to Categorical Data Analysis,Annual Review of Sociology.22:351-375) Can R fit such partial association model? ps:Another somewhat off-topic question.What's the motivations to use log-linear model?Or why use

i am studying Longitudinal Data Analysis and want to carry it with R.anyone knows any materials about Longitudinal Data Analysis with R in the internet which i can download? thank you.

AFAIK most model fitting techniques will only deal with additive errors, not multiplicative ones. You might want to try fitting: log(y-x) = a*x + e which is linear. Andy > From: Angelo Secchi > > Hi, > is there a way in R to fit a non linear model like > > y=x+exp(a*x)*eps > > where a is the parameter and eps is the error term? > Thanks > Angelo > >

here is my system memory: ronggui at 0[ronggui]$ free total used free shared buffers cached Mem: 256728 79440 177288 0 2296 36136 -/+ buffers/cache: 41008 215720 Swap: 481908 60524 421384 and i want to cluster my data using hclust.my data has 3 variables and 10000 cases.but it fails and saying have not

my last post was filtered,so I post it again with another title. If I do not make a mistake,the partial association model is an extension of log-linear model.I read a papers which gives an example of it.(Sloane and Morgan,1996,An Introduction to Categorical Data Analysis,Annual Review of Sociology.22:351-375) Can R fit such partial association model? ps:Another somewhat off-topic

i want to ask 2 questions. 1) can R do Random-effects GLS regression which i can get from Stata? the following result is frome Stata.can I get the alike result from R? xtreg lwage educ black hisp exper expersq married union, re Random-effects GLS regression Number of obs = 4360 Group variable (i) : nr Number of groups = 545 R-sq:

On Tue, 15 Jun 2004 21:41:00 +0800, ?????? <0034058@fudan.edu.cn> wrote : >Duncan Murdoch?? > > thanks for your information:) > > i have another small question,i hope you can give me an perfect answer. > >i know the difference between alpha and beta version,but how about pathed verion? > >does pathed version means final version,formal version? Here's a

it takes a long time to load the lme4 package.anyone else encounter this problem? > system.time(library(lme4)) 佋佖伻侂佇佽佉仾伒伳伋佁伡伃伆侟仯伜Matrix 佋佖伻侂佇佽佉仾伒伳伋佁伡伃伆侟仯伜lattice [1] 19.90 0.30 25.56 NA NA > version _ platform i386-pc-mingw32 arch i386 os mingw32 system i386, mingw32 status Patched major 2 minor