compositions (version 2.0-4)

summary.aplus: Summaries of amounts

Description

Summary of a vector of amounts, according to its underlying geometry.

Usage

# S3 method for aplus
summary( object, ..., 
            digits=max(3, getOption("digits")-3), robust=NULL)
          # S3 method for rplus
summary( object, ..., robust=NULL)
          # S3 method for rmult
summary( object, ..., robust=NULL)

Value

A matrix containing summary statistics (minimum, the three quantiles, the mean and the maximum) of each component.

Arguments

object

an aplus/rplus set of amounts

digits

the number of significant digits to be used. The argument can also be used with rplus/rmult.

...

not used, only here for generics

robust

A robustness description. See robustnessInCompositions for details. The option is currently not supported. If support is added the default will change to getOption(robust).

Author

K.Gerald v.d. Boogaart http://www.stat.boogaart.de

Details

The obtained value is the same as for the classical summary summary, although in the case of aplus objects, the statistics have been computed in a logarithmic geometry, and exponentiated afterwards (which just changes the mean, equivalent to the geometric mean of the data set).

See Also

aplus,rplus,summary.acomp, summary.rcomp

Examples

data(SimulatedAmounts)
summary(aplus(sa.lognormals))
summary(aplus(sa.tnormals))
summary(rplus(sa.lognormals))
summary(rplus(sa.tnormals))
summary(rmult(sa.lognormals))