Sections created with as.section() have "stations" that are in the
order of the CTD objects (or filenames for such objects) provided. Sometimes,
this is not the desired order, e.g. if file names discovered with
dir() are in an order that makes no sense. (For example, a
practioner might name stations "stn1", "stn2", etc., not
realizing that this will yield an unhelpful ordering, by file name, if there
are more than 9 stations.) The purpose of sectionSort is to permit
reordering the constituent stations in sensible ways.
Usage
sectionSort(section, by, decreasing = FALSE)
Value
object A section object that has been smoothed,
so its data fields will station-to-station variation than
is the case for the input section, x.
Arguments
section
A section object containing the section whose stations
are to be sorted.
by
An optional string indicating how to reorder. If not provided,
"stationID" will be assumed. Other choices are "distance", for
distance from the first station, "longitude", for longitude,
"latitude" for latitude, and "time", for time.
decreasing
A logical value indicating whether to sort in decreasing
order. The default is FALSE. (Thanks to Martin Renner for adding this
parameter.)
Author
Dan Kelley
See Also
Other things related to section data:
[[,section-method,
[[<-,section-method,
as.section(),
handleFlags,section-method,
initializeFlagScheme,section-method,
plot,section-method,
read.section(),
section,
section-class,
sectionAddStation(),
sectionGrid(),
sectionSmooth(),
subset,section-method,
summary,section-method