Vikrant,
if you execute the code inside a function like
jpegplotfun <- function (a, b){
jpeg("mygraph.jpeg")
plot(a,b)
dev.off()
}
the dev.off () is not executed if an error occurs before. So the problem is
basically that the jpeg file is still open (you may noticed open devices in R as
left overs of these errors).
See ? try and ? on.exit for ways to deal with situations where you need to
clean up after errors.
HTH,
Claudia
On 12/17/2010 08:24 AM, vikrant wrote:
Hi
I am generating a graph jpeg file using a function R. I m using this
script
a<- 1:10
b<- 1:10
jpeg("mygraph.jpeg")
{
plot(a,b)
}
dev.off()
If by some chance I do miss some values suppose for a , the file gets
created initially and then we do not plot anything in it. This file now
becomes corrupted and we cannot delete this file from current R Session.
I Have tried commands like file.remove() and unlink to remove the corrupt
file from current R session.
Is there any other way inorder to remove such files??
Thanks& Regards,
Vikrant
--
Claudia Beleites
Dipartimento dei Materiali e delle Risorse Naturali
Università degli Studi di Trieste
Via Alfonso Valerio 6/a
I-34127 Trieste
phone: +39 0 40 5 58-37 68
email: cbelei...@units.it
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