subset.echosounder {oce} | R Documentation |
Subset an echosounder object
## S4 method for signature 'echosounder' subset(x, subset, ...)
x |
a |
subset |
a condition to be applied to the |
... |
ignored. |
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.
A new echosounder
object.
Dan Kelley
library(oce) data(echosounder) plot(echosounder) plot(subset(echosounder, depth < 10)) plot(subset(echosounder, time < mean(range(echosounder[['time']]))))