I am subsetting a larger data frame that contains macroinverterate
taxa. I am subsetting them at different levels of taxonomic
resolution. Some of the sites do not have say Tipulidae present, so the
rows are removed completely for this site. I would like to fill in the
sites that were removed during the subsetting and fill these with 0. I
have the non-subsetted dataframe which contains all of the sites. I
would like to use the sites from this complete data set to "expand" the
dataframe that is a subset of the sites in the original. Is that more
clear.
Stephen
On Wed 25 Apr 2012 09:13:24 AM CDT, chuck.01 wrote:
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Stephen Sefick
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