A Simple Aggregation Mechanism.
Given an environment and an aggregator (an object of class aggregate simple aggregations are made.
Aggregate(x, agg)
x |
The data to be aggregated. |
agg |
The aggregator to be used. |
Given some data, x the user can accumulate (or aggregate)
information in env using the two supplied functions.
See the accompanying documentation for a more complete example of this
function and its use.
No value is returned. This function is evaluated purely for side
effects. The symbols and values in env are altered.
R. Gentleman
agg1 <- new("aggregator")
Aggregate(letters[1:10], agg1)
# the first 10 letters should be symbols in env1 with values of 1
Aggregate(letters[5:11], agg1)
# now letters[5:10] should have value 2
bb <- mget(letters[1:11], env=aggenv(agg1), ifnotfound=NA)
t1 <- as.numeric(bb); names(t1) <- names(bb)
t1
# a b c d e f g h i j k
# 1 1 1 1 2 2 2 2 2 2 1Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.