aggregate-methods {surveillance}R Documentation

Aggregate the the series of an sts object

Description

Method to aggregate the matrix slots of an sts object. Either the time series is aggregated so a new sampling frequency of nfreq units per time slot is obtained – i.e as in aggregate.ts. The other option is to aggregate over all ncol units.

Note: The function is not 100% consistent with what the generic function aggregate does.

Details

Warning: In case the aggregation is by unit the upperbound slot is set to NA. Furthermore the MAP object is left as is, but the object cannot be plotted anymore.

Methods

x = "sts", by="time", nfreq="all",...
x
an object of class sts
by
a string being either "time" or "unit"
nfreq
new sampling frequency if by=="time". If nfreq=="all" then all time instances are summed.
...
not used

returns an object of class sts

See Also

aggregate

Examples

  data(ha)
  has4 <- disProg2sts(ha)
  dim(has4)
  dim(aggregate(has4,by="unit"))
  dim(aggregate(has4,nfreq=13))

[Package surveillance version 1.1-2 Index]