R: Try to Reduce Section Longitude Range

longitudeTighten {oce} | R Documentation

## Try to Reduce Section Longitude Range

### Description

longitudeTighten shifts some longitudes in its first argument by 360 degrees, if doing so will reduce the overall longitude span.

### Usage

    longitudeTighten(section)

### Arguments

`section` | a section object.

### Details

This function can be helpful in cases where the CTD stations within a section cross the cut point of the longitude convention, which otherwise might yield ugly plots if `plot,section-method()` is used with `xtype="longitude"`. This problem does occur with CTD objects ordered by time of sampling, but was observed in December 2020 for a GO-SHIPS dataset downloaded from `https://cchdo.ucsd.edu/data/15757/a10_1992_ct1`.

### Value

A section object based on its first argument, but with longitudes shifted in its `metadata` slot, and also in the `metadata` slots of each of the ctd objects that are stored in the `station` item in its `data` slot.

### Author(s)

Dan Kelley

[Package oce version 1.7-2 Index]