Return a subset of a ctd object.
# S4 method for ctd
subset(x, subset, ...)A ctd object.
a ctd object.
An expression indicating how to subset x.
optional arguments, of which only the first is examined. The only
possibility is that this argument be named indices. See “Details”.
Dan Kelley
This function is used to subset data within
a ctd object. There are two ways of working. If
subset is supplied, then it is a logical expression
that is evaluated within the environment of the data
slot of the object (see Example 1). Alternatively, if the
... list contains an expression defining indices,
then that expression is used to subset each item within the
data slot (see Example 2).
Other things related to ctd data:
CTD_BCD2014666_008_1_DN.ODF.gz,
[[,ctd-method,
[[<-,ctd-method,
as.ctd(),
cnvName2oceName(),
ctd,
ctd-class,
ctd.cnv.gz,
ctdDecimate(),
ctdFindProfiles(),
ctdFindProfilesRBR(),
ctdRaw,
ctdRepair(),
ctdTrim(),
ctd_aml.csv.gz,
d200321-001.ctd.gz,
d201211_0011.cnv.gz,
handleFlags,ctd-method,
initialize,ctd-method,
initializeFlagScheme,ctd-method,
oceNames2whpNames(),
oceUnits2whpUnits(),
plot,ctd-method,
plotProfile(),
plotScan(),
plotTS(),
read.ctd(),
read.ctd.aml(),
read.ctd.itp(),
read.ctd.odf(),
read.ctd.odv(),
read.ctd.saiv(),
read.ctd.sbe(),
read.ctd.ssda(),
read.ctd.woce(),
read.ctd.woce.other(),
setFlags,ctd-method,
summary,ctd-method,
woceNames2oceNames(),
woceUnit2oceUnit(),
write.ctd()
Other functions that subset oce objects:
subset,adp-method,
subset,adv-method,
subset,amsr-method,
subset,argo-method,
subset,cm-method,
subset,coastline-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
library(oce)
data(ctd)
plot(ctd)
# Example 1
plot(subset(ctd, pressure < 10))
# Example 2
plot(subset(ctd, indices = 1:10))
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