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Batch importing data with respective naming

4 messages · Zeljko Vrba, Taylor Hermes, Adrián Cortés

Taylor Hermes
# 
I'm trying to import data from 100 text files and create data frames
that reflect their numbering.

The slow way would be to do the following:

peak1 <- read.table("1--peak--hist.txt", sep=",", header=TRUE)
peak2 <- read.table("2--peak--hist.txt", sep=",", header=TRUE)
peak3 <- read.table("3--peak--hist.txt", sep=",", header=TRUE)
...

I tried the following:

for (i in 1:100) {
	peak[[i]] <- read.table(paste(i,"--one--hist.txt", sep=""), sep=",",
header=TRUE)
}

I receive an error saying "object 'peak' not found, which leads me to
believe R is trying to look in 'peak' at to whatever position 'i' has
iterated.

How can I create these data frame objects with the numbering to match
the input text files?  That is to match the iterated 'i' of the loop?

Thanks for your help!
Zeljko Vrba
#
On Tue, Apr 28, 2009 at 07:09:04PM -1000, Taylor Hermes wrote:
Add this before for():

peak <- list()
Taylor Hermes
# 
It seems that this addition works, but has created just one object
called 'peak' with all the data from those 100 files.  I'd like each
file to have a corresponding object containing the data.

Thanks for your help!
On Tue, Apr 28, 2009 at 19:43, Zeljko Vrba <zvrba at ifi.uio.no> wrote: