Re: [R] Memory management in R

2010-10-10 Thread Mike Marchywka
> Date: Sun, 10 Oct 2010 15:27:11 +0200 > From: lorenzo.ise...@gmail.com > To: dwinsem...@comcast.net > CC: r-help@r-project.org > Subject: Re: [R] Memory management in R > > > > I already offered the Biostrings packa

Re: [R] Memory management in R

2010-10-10 Thread Lorenzo Isella
I already offered the Biostrings package. It provides more robust methods for string matching than does grepl. Is there a reason that you choose not to? Indeed that is the way I should go for and I have installed the package after some struggling. Since biostring is a fairly complex package

Re: [R] Memory management in R

2010-10-09 Thread David Winsemius
On Oct 9, 2010, at 4:23 PM, Lorenzo Isella wrote: My suggestion is to explore other alternatives. (I will admit that I don't yet fully understand the test that you are applying.) Hi, I am trying to partially implement the Lempel Ziv compression algorithm. The point is that compressibility

Re: [R] Memory management in R

2010-10-09 Thread Lorenzo Isella
My suggestion is to explore other alternatives. (I will admit that I don't yet fully understand the test that you are applying.) Hi, I am trying to partially implement the Lempel Ziv compression algorithm. The point is that compressibility and entropy of a time series are related, hence my fi

Re: [R] Memory management in R

2010-10-09 Thread David Winsemius
On Oct 9, 2010, at 9:45 AM, Lorenzo Isella wrote: Hi David, I am replying to you and to the other people who provided some insight into my problems with grepl. Well, at least we now know that the bug is reproducible. Indeed it is a strange sequence the one I am postprocessing, probably pat

Re: [R] Memory management in R

2010-10-09 Thread Lorenzo Isella
Hi David, I am replying to you and to the other people who provided some insight into my problems with grepl. Well, at least we now know that the bug is reproducible. Indeed it is a strange sequence the one I am postprocessing, probably pathological to some extent, nevertheless the problem is g

Re: [R] Memory management in R

2010-10-08 Thread David Winsemius
On Oct 8, 2010, at 9:19 PM, Mike Marchywka wrote: From: dwinsem...@comcast.net To: lorenzo.ise...@gmail.com Date: Fri, 8 Oct 2010 19:30:45 -0400 CC: r-help@r-project.org Subject: Re: [R] Memory management in R On Oct 8, 2010, at 6:42 PM, Lorenzo

Re: [R] Memory management in R

2010-10-08 Thread Mike Marchywka
> From: dwinsem...@comcast.net > To: lorenzo.ise...@gmail.com > Date: Fri, 8 Oct 2010 19:30:45 -0400 > CC: r-help@r-project.org > Subject: Re: [R] Memory management in R > > > On Oct 8, 2010, at 6:42 PM, Lorenzo Isella wrote:

Re: [R] Memory management in R

2010-10-08 Thread David Winsemius
On Oct 8, 2010, at 6:42 PM, Lorenzo Isella wrote: Thanks for lending a helping hand. I put together a self-contained example. Basically, it all relies on a couple of functions, where one function simply iterates the application of the other function. I am trying to implement the so-called L

Re: [R] Memory management in R

2010-10-08 Thread Lorenzo Isella
Thanks for lending a helping hand. I put together a self-contained example. Basically, it all relies on a couple of functions, where one function simply iterates the application of the other function. I am trying to implement the so-called Lempel-Ziv entropy estimator. The idea is to choose a p

Re: [R] Memory management in R

2010-10-08 Thread Mike Marchywka
> Date: Fri, 8 Oct 2010 13:30:59 -0400 > From: jholt...@gmail.com > To: lorenzo.ise...@gmail.com > CC: r-help@r-project.org > Subject: Re: [R] Memory management in R > > More specificity: how long is the string, what is the patte

Re: [R] Memory management in R

2010-10-08 Thread jim holtman
More specificity: how long is the string, what is the pattern you are matching against? It sounds like you might have a complex pattern that in trying to match the string might be doing a lot of back tracking and such. There is an O'Reilly book on Mastering Regular Expression that might help you

Re: [R] Memory management in R

2010-10-08 Thread Doran, Harold
management in R Dear All, I am experiencing some problems with a script of mine. It crashes with this message Error in grepl(fut_string, past_string) : invalid regular expression '12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12

Re: [R] Memory management in R

2010-10-08 Thread Lorenzo Isella
elp-boun...@r-project.org] Sent: Friday, October 08, 2010 1:12 PM To: r-help Subject: [R] Memory management in R Dear All, I am experiencing some problems with a script of mine. It crashes with this message Error in grepl(fut_string, past_string) : invalid regular expression '12653a6

[R] Memory management in R

2010-10-08 Thread Lorenzo Isella
Dear All, I am experiencing some problems with a script of mine. It crashes with this message Error in grepl(fut_string, past_string) : invalid regular expression '12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12653a6#12

Re: [R] memory management in R

2010-06-16 Thread Jens Oehlschlägel
olean, short integers etc.). Jens Oehlschlägel -Ursprüngliche Nachricht- Von: john Gesendet: Jun 16, 2010 12:20:17 PM An: r-help@r-project.org Betreff: [R] memory management in R > > >I have volunteered to give a short talk on "memory management in R" > to my lo

[R] memory management in R

2010-06-16 Thread john
I have volunteered to give a short talk on "memory management in R" to my local R user group, mainly to motivate myself to learn about it. The focus will be on what a typical R coder might want to know ( e.g. how objects are created, call by value, basics of garbage collection ) but I want