| subset,amsr-method {oce} | R Documentation |
Subset an amsr Object
Description
Return a subset of a amsr object.
Usage
## S4 method for signature 'amsr'
subset(x, subset, ...)
Arguments
x |
an amsr object. |
subset |
an expression indicating how to subset |
... |
ignored. |
Details
This function is used to subset data within an amsr
object by longitude or by latitude. These two methods cannot
be combined in a single call, so two calls are required, as shown
in the Example.
Value
An amsr object.
Author(s)
Dan Kelley
See Also
Other things related to amsr data:
[[,amsr-method,
[[<-,amsr-method,
amsr-class,
amsr,
composite,amsr-method,
download.amsr(),
plot,amsr-method,
read.amsr(),
summary,amsr-method
Other functions that subset oce objects:
subset,adp-method,
subset,adv-method,
subset,argo-method,
subset,cm-method,
subset,coastline-method,
subset,ctd-method,
subset,echosounder-method,
subset,lobo-method,
subset,met-method,
subset,oce-method,
subset,odf-method,
subset,rsk-method,
subset,sealevel-method,
subset,section-method,
subset,topo-method,
subset,xbt-method
Examples
library(oce)
data(amsr) # see ?amsr for how to read and composite such objects
sub <- subset(amsr, -75 < longitude & longitude < -45)
sub <- subset(sub, 40 < latitude & latitude < 50)
plot(sub)
data(coastlineWorld)
lines(coastlineWorld[["longitude"]], coastlineWorld[["latitude"]])