On 09/03/2009 05:42 PM, j.delashe...@ed.ac.uk wrote:
Hello list, I use R for microarray analysis. One procedure I use takes a large matrix, and loops through it looking for specific rows, does an operation with them, and outputs a result (single row) as a row of another matrix. The loop goes on about 25000 times. When I run the loop directly from the R console itself, it takes about 3 minutes in my computer. I'm ok with that. Now, when that same code is ran from within a GUI we created using Perl (Tcl/Tkx) it's taking 25-30 minutes to run. Within the R code I inserted a line so that it writes a little file every 1000th iteration of the loop, so that I can follow the progress. I don't understand why it takes 10x longer when ran from Perl. I am not new to R, but I am new to using it within Perl or any other language. Is there a way to improve performance? What is the reason for the slower speed? I'll happily provide the code if somebody wants it. thank you. Jose
Can you describe what you mean by "running the code from the gui". Is R embedded in you application or do you create a new R session each time.
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