search for: samplenumber

Displaying 2 results from an estimated 2 matches for "samplenumber".

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2010 Sep 02
1
nlme formula from model specification
...ve been processed by a machine measuring the same signal at four different channels. I want to model the noise. I have taken the noise (the signal is from position 1 to 3500, and after that there is only noise). My data looks like this: channel.matrix: pos channel0 channel1 channel2 channel3 samplenumber 1 3501 8 3 12 1 1 2 3502 3 7 0 14 1 3 3503 9 1 13 3 1 4 3504 3 7 3 14 1 5 3505 6 5 4 5 1 6...
2006 Oct 10
2
rarefy a matrix of counts
Hi all, I have a matrix of counts for objects (rows) by samples (columns). I aimed for about 500 counts in each sample (I have about 80 samples) and would now like to rarefy these down to 100 counts in each sample using simple random sampling without replacement. I plan on rarefying several times for each sample. I could do the tedious looping task of making a list of all objects (with its