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198
2008 Sep 15
4
getting data into correct format for summarizing ... reshape, aggregate, or...
...ike to reformat this data frame into something that I can
produce some descriptive statistics. I have been playing around with
the reshape package and maybe this is not the best way to proceed. I
would like to use RiverMile and constituent as the grouping variables
to get the summary statistics:
198a 198b
mean mean
sd sd
... ...
etc. for all of these.
I have tried reshape and aggregate and I am sure that I am missing something...
below is a naive attempt at making a data frame with the columns in
the correct class- This can be improved also. There are NA in the
real data s...