as_complex

as_complex,xy,missing-method

as_complex,numeric,numeric-method

as_complex,numeric,missing-method

as_complex,missing,numeric-method

Utility function to create complex vectors from arguments
specified as in grDevices::xy.coords() or otherwise

Some enhancements, extensions and additions
to the facilities of the recommended 'MASS' package
that are useful mainly for teaching purposes, with
more convenient default settings and user interfaces.
Key functions from 'MASS' are imported and re-exported
to avoid masking conflicts.  In addition we provide
some additional functions mainly used to illustrate
coding paradigms and techniques, such as Gramm-Schmidt
orthogonalisation and generalised eigenvalue problems.

Bill Venables

MASSExtra

Some 'MASS' Enhancements

as_complex function

<dl><dt>x</dt>
<dd>A numeric vector or missing, or an object inheriting from class "xy"</dd>
<dt>y</dt>
<dd>If x is a numeric an optional numeric vector, or missing. If x or y are
missing they are taken as 0, but only one may be missing.</dd></dl>

Arguments

Coerce to complex — as_complex

<dl>

<dt>x</dt>
<dd>A numeric vector or missing, or an object inheriting from class "xy"</dd>


<dt>y</dt>
<dd>If x is a numeric an optional numeric vector, or missing. If x or y are
missing they are taken as 0, but only one may be missing.</dd>

</dl>

as_complex: Coerce to complex

Description

Usage

Value

Arguments

Examples