[R] Premature termination of script

From: Marco Blanchette <mblanche_at_uclink.berkeley.edu>
Date: Sun 31 Jul 2005 - 05:57:31 EST


I am fairly new to R and I am writing a script that would take a file, as an input, and generates a bunch of graphs out of it. My first task is to be sure that the file is of the right type by looking if there is a valid barcode in it as in (the barcode is beetween a double and single underscore):

library(tkWidgets)

##############
#Loading a file
#testing if valid if not kill the execution
##############

data.file <- fileBrowser(textToShow="Select a splice junction array extraction file")
if ( t <- regexpr("__\\d*_",data.file, perl=T) == -1){

    cat ("The selected file does not seem to be of the right type\n")     #Should be able to exit the script here }
cat("File look good keep going\n")

How do I prevent R from interpreting the rest of the script if the user don't input the right file?

Marco Blanchette, Ph.D.

mblanche@uclink.berkeley.edu

Donald C. Rio's lab
Department of Molecular and Cell Biology 16 Barker Hall
University of California
Berkeley, CA 94720-3204

Tel: (510) 642-1084
Cell: (510) 847-0996
Fax: (510) 642-6062



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https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Sun Jul 31 06:01:46 2005

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