a 'split' function should not take hours to complete. I will not even wait a couple of minutes for one until I look at other approaches. Can you at least show what the command looks like and what the structure of the data is. Are you trying to split a dataframe on multiple criteria? I tend to use 'data.table' for some of these operation, or split the indices of a dataframe instead of the data. My own criteria is that if a single base function call is taking more than a minute, I see if there are options.
This is also a case of "tell me what you want to do, not how you want to do it". Sent from my iPad On Jul 14, 2013, at 23:24, L S <losedag...@gmail.com> wrote: > Thanks Jim and David for your helpful feedback. I still have not terminated > RStudio (and it still has not gone to completion). A few observations I > forgot to mention is that the red "stop" icon is showing in RStudio so I am > unable to enter any new commands. Also there is a blinking cursor under the > "> command" I ran with no > before the cursor. > > David--Looking at the activity monitor, RStudio is using anywhere from 0.4-1% > of CPU while another process called rsession is using anywhere from 17-23% > CPU. Does this mean it has given up processing the R command? If so, is > there anything I can do to ensure this won't happen next time I try to run > the command with my data? > > (Also, how can you tell if the process is using virtual memory?) > > Jim--What I'm running now is just a single instruction using the split > function, so I would not be able to put in the progress messages. But, > that's a great idea! I will keep that in mind if I run into problems with > scripts in the future. > > Thank you. > > > On Sun, Jul 14, 2013 at 6:46 PM, jim holtman <jholt...@gmail.com> wrote: > If you are writing a script that you know will take a long time to process, > "pepper" it with "progress" reports so you know what part of the script it is > in and when it is going around loop. On some of my long scripts, I will > print out a message every n'th time through the loop so that I know if it > making progress. I position them so that I get out a message every minute or > so. Also make sure the GUI is not buffered, or better, follow each status > with a 'flush.console()' to put the message out to the screen. This will > give you a feeling of what progress you are making. > > > On Sun, Jul 14, 2013 at 5:40 PM, L S <losedag...@gmail.com> wrote: > Hi, > > Have any of you ever encountered a situation where R stops processing an > instruction but does not give a "not responding" message? > > The reason I ask is I am working in RStudio (Mac OS/X 10.7, 1.8 Ghz i7, 4 > GB DDR3) and the instruction I entered in the command line pane is still > being processed since last night around 7 PM. I expected it to take on the > order of 8-12 hours to complete, but I'm nearing 24 hours with no progress, > no messages, etc. > > The command is essentially splitting the a ppp (marked point pattern) into > a tessellation/grid. There are about a couple million points in the > pattern and each has a vector of four marks. That said, I processed a > similar command with 700,000 points in the pattern (each point with a > vector of two marks) yesterday and it took only around 3 hours. > > Is there anyway I can be certain the command is being processed? I don't > want to abort prematurely if I know it will go to completion. How long > would you give it before you knew for certain it would not complete? > > Any guidance you could offer would be much appreciated. > > Thanks, > Lily > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > > > > -- > Jim Holtman > Data Munger Guru > > What is the problem that you are trying to solve? > Tell me what you want to do, not how you want to do it. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
