Dear R people,
I wonder if you could give me a hand with some of my data. I have a very
typical analysis in biology, however it is difficult for me to find the
right way to analyse. I had a group of animals, I gave them a treatment, and
I measure a variable along time -one??s per day- along 5 days,for
example(fake data):
Animals Time1 Time2 Time3 Time4
1 1 5 3 1
2 2 7 4 1
3 5 5 3 1
4 1 3 7 2
5 2 7 7 1
Please, notice that all the animals get the same treatment, and there are no
control -animals which has no received any treatment.
Normally I handle this kind of data with SPSS and Repeated Measurement
analysis. That tell me if there is a change along the time, but no
information about when the treatment start to be effective, when the effect
has pass. Besides, i would like to be able to handle this data with R.
I have been looking at Crawley's S-plus book, and I cannot find similar
example as I have, not either in the Dalgaard??s introduction to R, because
he uses an example where different animals are measured as each time -using
time as a factor in a one way anova (I am hope I am right).
Thanks for your help and time.
Best regards
Felix