oce (version 0.9-21)

subset,echosounder-method: Subset an Echosounder Object

Description

This function is somewhat analogous to subset.data.frame. Subsetting can be by time or depth, but these may not be combined; use a sequence of calls to subset by both.

Usage

# S4 method for echosounder
subset(x, subset, ...)

Arguments

x

a echosounder object.

subset

a condition to be applied to the data portion of x. See ‘Details’.

…

ignored.

Value

A new echosounder object.

See Also

Other things related to echosounder data: [[,echosounder-method, [[<-,echosounder-method, as.echosounder, echosounder-class, echosounder, findBottom, plot,echosounder-method, read.echosounder, summary,echosounder-method

Examples

# NOT RUN {
library(oce)
data(echosounder)
plot(echosounder)
plot(subset(echosounder, depth < 10))
plot(subset(echosounder, time < mean(range(echosounder[['time']]))))

# }