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Thanks for those on the list that answered my previous question. I'm just about where I need to be (looking at output). In the hier.part documentation there is a line env <- urbanwq[,2:8]. This means use rows 2 through 8 in the data frame "urbanwq", right?
his means use columns 2 through 8 in the data frame "urbanwq"
What does the comma represent?
It means the first argument to function "[" is left blank,so makes R knows 2:8 is the second argument to "[".
If one wasn't using column headers would this be necessary?
It still is necessary.
Thanks, Jeff **************************************** Jeffrey A. Stratford, Ph.D. Postdoctoral Associate 331 Funchess Hall Department of Biological Sciences Auburn University Auburn, AL 36849 334-329-9198 FAX 334-844-9234 http://www.auburn.edu/~stratja
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