Hello,
I have several data sets involving repeated measures over time of annual grass survival in plots following application of several levels of herbicide treatments. Since the data set contains quite a number of zeros, it doesn't fit the assumptions for parametric analysis.
I read in
Shah, D.A. and L. V. Madden. 2004. Nonparametric analysis of ordinal data in designed factorial experiments. Am. Phytopathological Soc. 94:1 pp 33-43.
that free macros exist for this analysis in SAS and R. I've looked through the R packages and searched the R mailing list; however, I can't seem to find what I'm looking for. Perhaps, I'm looking in the wrong place.
I would appreciate it if someone would point me in the right direction.
Thanks,
Gary Whysong Department of Applied Biological Sciences Arizona State University East
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