Re: [R] Assign Names of columns in data.frame dinamically

From: Andreas Borg <andreas.borg_at_unimedizin-mainz.de>
Date: Fri, 01 Apr 2011 09:25:47 +0200

Hi Marcos,

I'd be glad to help, but your example is not usable for anyone but yourself - I don't have the files that your code reads and I don't have any idea what the resulting data frames look like. Please provide examples of the data and the result.

Andreas

Marcos Amaris Gonzalez schrieb:
> Hello List.
>
> I have many files of ECG, each one with 7 column and I need only the
> second column and the name of each ECG. I am doing this but althought
> I have various days trying this i haven't gotten, so I ask help with
> this, if somebody cans help me I'll be so thankfully.
>
> --------------------------------------------------------------------------------------------------------
> rm(list=ls())
>
> # loadEcgFiles <- function(Dir=".") {
> Dir <- ".";
>
> txtfiles <- list.files(paste(Dir),'.txt$');
> ecg = data.frame(ncol=1);
> len = length(txtfiles);
>
> for (i in 1:5 ) {
> # i <- 1;
> filename = paste(projectDir, "/" ,
> txtfiles[i],sep='');
> sample = read.table(filename, nrow=75000);
> sampleName = filename; sampleName=gsub("./",
> "",sampleName); sampleName=gsub(".txt", "", sampleName);
> temp <- sample$V2;
> names(temp) <- sampleName;
> ecg = cbind(ecg, temp);
> # }
>
> Thanks and sorry for my english.
>
> ---
> Marcos Amaris González - Linux Counter #462840
> ------------------------------------------------------------------------------
> No al SPAM!
> "No es más rico el que más tiene, sino el que menos necesita."
> ------------------------------------------------------------------------------
>
> ______________________________________________
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>
>

-- 
Andreas Borg
Medizinische Informatik

UNIVERSITÄTSMEDIZIN
der Johannes Gutenberg-Universität
Institut für Medizinische Biometrie, Epidemiologie und Informatik
Obere Zahlbacher Straße 69, 55131 Mainz
www.imbei.uni-mainz.de

Telefon +49 (0) 6131 175062
E-Mail: borg_at_imbei.uni-mainz.de

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Received on Fri 01 Apr 2011 - 07:29:16 GMT

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