geodXyInverse

value of x in metres, as given by <code><a rd-options="" href="/link/geodXy?package=oce&version=0.9-21" data-mini-rdoc="oce::geodXy">geodXy</a></code>

value of y in metres, as given by <code><a rd-options="" href="/link/geodXy?package=oce&version=0.9-21" data-mini-rdoc="oce::geodXy">geodXy</a></code>

reference longitude, as supplied to <code><a rd-options="" href="/link/geodXy?package=oce&version=0.9-21" data-mini-rdoc="oce::geodXy">geodXy</a></code>

longitudeRef

reference latitude, as supplied to <code><a rd-options="" href="/link/geodXy?package=oce&version=0.9-21" data-mini-rdoc="oce::geodXy">geodXy</a></code>

latitudeRef

The calculation is done by finding a minimum value of a cost
function that is the vector difference between (<code>x</code>,<code>y</code>)
and the corresponding values returned by <code><a rd-options="" href="/link/geodXy?package=oce&version=0.9-21" data-mini-rdoc="oce::geodXy">geodXy</a></code>. This
minimum is calculated in C for speed, using the <code>nmmin</code> function
that is the underpinning for the Nelder-Meade version of the R function
<code><a rd-options="" href="/link/optim?package=oce&version=0.9-21" data-mini-rdoc="oce::optim">optim</a></code>.

Supports the analysis of Oceanographic data, including 'ADCP'
measurements, measurements made with 'argo' floats, 'CTD' measurements,
sectional data, sea-level time series, coastline and topographic data, etc.
Provides specialized functions for calculating seawater properties such as
potential temperature in either the 'UNESCO' or 'TEOS-10' equation of state.
Produces graphical displays that conform to the conventions of the Oceanographic
literature.

Dan Kelley

Analysis of Oceanographic Data

Clark Richards

Chantelle Layton

British Geological Survey 

Pablo Vald<c3><a9>s

geodXyInverse function

value of x in metres, as given by <code><a rd-options='' href='geodXy'>geodXy</a></code>

value of y in metres, as given by <code><a rd-options='' href='geodXy'>geodXy</a></code>

reference longitude, as supplied to <code><a rd-options='' href='geodXy'>geodXy</a></code>

reference latitude, as supplied to <code><a rd-options='' href='geodXy'>geodXy</a></code>

The calculation is done by finding a minimum value of a cost
function that is the vector difference between (<code>x</code>,<code>y</code>)
and the corresponding values returned by <code><a rd-options='' href='geodXy'>geodXy</a></code>. This
minimum is calculated in C for speed, using the <code>nmmin</code> function
that is the underpinning for the Nelder-Meade version of the R function
<code><a rd-options='' href='optim'>optim</a></code>.

geodXyInverse: Inverse Geodesic Calculation

Description

Usage

Arguments

Value

See Also