oce (version 0.9-18)

sectionSort: Sort a section

Description

Sort a section

Usage

sectionSort(section, by)

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, and

Value

• An object of class "section" that has less lateral variation than the input section.

Details

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.

See Also

The documentation for section-class explains the structure of section objects, and also outlines the other functions dealing with them.

Examples

# Eastern North Atlantic, showing Mediterranean water;
# sorting by longitude makes it easier to compare
# the map and the section.
library(oce)
data(section)
s <- sectionGrid(subset(section, -30 <= longitude))
ss <- sectionSort(ss, by="longitude")
plot(ss)