Displaying 1 result from an estimated 1 matches for "120hr".
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120hz
2007 Mar 07
5
how to "apply" functions to unbalanced data in long format by factors......cant get "by" or "aggregate" to work
...d from the experiment. The factors represent the differences
between each sample or "run" measured.
str(mydata) ### sample of table at bottom of email ###
'data.frame': 129982 obs. of 6 variables:
$ ID : num 7 7 7 7 7 7 8 8 8 8 ...
$ time : Factor w/ 2 levels "120hr","24hr": 1 1 1 1 2 2 2 1 1 1 ...
$ treatment: Factor w/ 2 levels "control","trt": 1 1 1 2 2 1 1 2 1 1 ...
$ expREP : Factor w/ 3 levels "expREP1","expREP2",..: 1 1 1 3 1 1 1 1 2 2 ...
$ techREP : Factor w/ 3 levels "techREP1",&q...