csAggregate: Splits the fishPi CS object into subsets, computes summary...

In ldbk/fishPifct: fishPi functions

Description

Splits the fishPi CS object into subsets, computes summary statistics for each, and returns the result in a convenient form.

Usage

csAggregate(csObj, x, by, aggFun, ...)

Arguments

csObj	to aggregate.
x	field to aggregate.
by	a list of grouping elements.
aggFun	a function to compute the summary statistic.
...	further arguments passed to or used by aggFun

Value

A data frame with columns corresponding to the grouping variables in by followed by aggregated columns from x.

Author(s)

Norbert Billet - IRD

Examples

## Not run: 
data(sole)
sole.cs.pi <- csDataTocsPi(sole.cs)
aggByFoCatEu5 <- csAggregate(csObj=sole.cs.pi, x=list(lenNum="lenNum"), by=list(foCatEu5="foCatEu5", lenCls="lenCls"), sum, na.rm=TRUE)

library(ggplot2)
ggplot(data=aggByFoCatEu5) + geom_bar(mapping=aes(x=lenCls, y=lenNum), stat="identity") + facet_wrap(~foCatEu5, ncol=1, scales="free_y") + theme_bw()

## End(Not run)

ldbk/fishPifct documentation built on May 20, 2019, 11:28 p.m.