similar to: IMPORTANT - To remove the null elements from a vector

Is there a command as "mat.or.vec(nr,nc)" to create an array that I must calculate with more cicle? [[alternative HTML version deleted]]

I must to create an array with dimensions 120x8x500. Better I have to make 500 simulations of 8 series of return from a multivariate normal distribution. there's the command "mvrnorm" but how I can do this repeating the simulation 500 times?" [[alternative HTML version deleted]]

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Sto imparando ora ad utilizzare R. Ho un problema: devo caricare i dati da un file xls creato da me, utilizzando la funzione "read.xls" produce il seguente errore: Errore in xls2csv(xls, sheet, verbose = verbose, ..., perl = perl) : Unable to read xls file 'indagineUSA.xls'. Errore in file.exists(tfn) : argomento 'file' non valido Cosa c'è che non va? La directory

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I have to calculate the logreturn variance in the Heston model. How can I do? Do you know some function that calculates it? Thank you Barbara -- ________________________________________________________ Le informazioni contenute in questo messaggio di posta elettronica sono strettamente riservate e indirizzate esclusivamente al destinatario. Si prega di non leggere, fare copia, inoltrare a

Dear all, I have a multiline plot with each line labeled with a different letter. But I'm not able to make the legend display the same kind of pattern '-a-', instead the letter is overwritten by the line. A simpler legend with only the letter is not very visible and the pt.bg does nothing with letters. Any idea? plot(1:10,10:1,lty=1,type='b', lwd=2,pch='a')

Hi all, I am trying to call the R script/ R Program via my Shell Script. I need to pass a file to the R script as an argument. When I am trying to do that I am getting error and only first line of the file is being read. Can you tell me how should I do that so that it reads the entire file in a R object so that later I am able to process the matrix operation on that file. It is a tab delimited

Hello I have some strange output from R and I try to understand how R works. Could you please help me with that? temp <- rbind (c(10,1),c(99,98)) > temp [,1] [,2] [1,] 10 1 [2,] 99 98 > dist(temp) 1 2 131.6435 > sqrt(dist(temp)) 1 2 11.47360 so far so good. until the nex line: when I try to do what i did before but adding the 1/(what I did

I have a doubt about the standard syntax (actually, it's the only test that maruku doesn't pass yet). Lists MUST be preceded by an empty line? So the following are only 4 paragraphs, without list items, right? ----------- Paragraph and no space: * ciao Paragraph and 1 space: * ciao Paragraph and 3 spaces: * ciao Paragraph and 4 spaces: * ciao ----------- In other words, a

During some experimentation in preparing R lessons I encountered this behaviour which I can not explain fully mat <- matrix(1:16, 4,4) df1 <- data.frame(mat) > mean(df1) X1 X2 X3 X4 2.5 6.5 10.5 14.5 Expected, documented > median(df1) [1] 6.5 10.5 Rather weird, AFAIK there shall not be an issue with data frame at least I did not find any in help page. I tracked it

    I created a couple of timeSeries objects - when I was merging them , I got an error. Looking at the data , I see that one of the time series has   06/30/2007  0.0028       0.0183  0.0122      0.0042  0.0095    -          07/31/2007 -0.0111       0.0255  0.0096     -0.0069 -0.0024  0.0043       08/31/2007 -0.0108      -0.0237 -0.0062     -0.0138 -0.0173 -0.0065       09/30/2007 

[sorry, forgot some details...] I'm using optim(param, fun, method='L-BFGS-B', lower=lo, upper=up) to minimize a certain function. Often the minimization ends with the message: ERROR: ABNORMAL_TERMINATION_IN_LNSRCH What is optim() trying to say? What have I to change in my function to make the minimization succeed? Do you think using BBoptim() instead of optim() changes anything?

I just upgraded my Win7 32bits installation to 2.14.0 after deinstalling 2.12.x First thing I moved the win-library from 2.12 to 2.14 and executed a update.packages(ask='graphics',checkBuilt=TRUE) (Swiss mirror). This aborts with the console message: Error in if (any(diff)) { : missing value where TRUE/FALSE needed And the antivirus (AVG) pops up complaining that colorspace.dll

hi all, I'm facing a problem with a brand new installation on fedora 9. packages were updated right after the installation, so the samba packages are of the latest available version (3.2.0-17.fc9). at the first run were created all the tree of tdb files under /var/lib/samba. now I create a new user: [root@barbara Scrivania]# smbpasswd -a barbara New SMB password: Retype new SMB password:

Please, I need help in the part stable from R. I can?t plot the distribution function of a stable law. I obtained bad results. But the density function is OK. How can I do it? Sorry, I?m Brazilian and my english isn?t good... Thanks, Barbara Patricia Olbermann Instituto de Matem?tica Universidade Federal do Rio Grande do Sul - Brasil barbara at athena.mat.ufrgs.br

It seems that lustre puts its modules in /lib/modules/2.6.16.21-0.8-default despite the fact that my kernel is 2.6.16.21-0.8-smp ! uname -a Linux n32 2.6.16.21-0.8-smp #4 SMP Sun Sep 24 08:47:30 BST 2006 i686 i686 i386 GNU/Linux make[3]: Nothing to be done for `install-exec-am''. /bin/sh ../../mkinstalldirs /lib/modules/2.6.16.21-0.8-default/kernel/fs/lustre /usr/bin/install -c -m 644

(In the following I write <tab> because my MUA strips tabs) Consider the code: ---- Paragraph <tab> <tab> Line <tab> ---- or even: ---- Paragraph <tab><space> <tab> Line <tab> ---- Markdown.pl ignores the leading blank line in the code block. Is this intended behaviour? -- Andrea Censi "Life is too important to be taken