Re: [R] memory usage grows too fast

lliam Dunlap [mailto:wdun...@tibco.com] Sent: Friday, May 15, 2009 10:09 AM To: Ping-Hsun Hsieh Subject: RE: [R] memory usage grows too fast rowMeans(dataMatrix=="02") must (a) make a logical matrix the dimensions of dataMatrix in which to put the result of dataMatrix=="02"

Re: [R] memory usage grows too fast

lto:palsp...@hortresearch.co.nz] Sent: Thursday, May 14, 2009 4:47 PM To: Ping-Hsun Hsieh Subject: RE: [R] memory usage grows too fast Tena koe Mike If I understand you correctly, you should be able to use something like: apply(yourMatrix, 1, function(x) length(x[x==yourPattern]))/ncol(yourMatrix

Re: [R] memory usage grows too fast

On Thu, May 14, 2009 at 6:21 PM, Ping-Hsun Hsieh wrote: > Hi All, > > I have a 1000x100 matrix. > The calculation I would like to do is actually very simple: for each row, > calculate the frequency of a given pattern. For example, a toy dataset is as > follows. > > Col1    Col2    Col3    Co

[R] memory usage grows too fast

Hi All, I have a 1000x100 matrix. The calculation I would like to do is actually very simple: for each row, calculate the frequency of a given pattern. For example, a toy dataset is as follows. Col1Col2Col3Col4 01 02 02 00 => Freq of “02” is 0.5 02