Time::TT::InterpolatingRealisation 0.001

Time::TT::InterpolatingRealisation is a TT realised by interpolation.

SYNOPSIS

use Time::TT::InterpolatingRealisation;

$rln = Time::TT::InterpolatingRealisation->new($interpolator);

$tai_instant = $rln->to_tai($instant);
$instant = $rln->from_tai($tai_instant);
$rln1_instant = $rln0->to_realisation($rln1, $rln0_instant);
$rln0_instant = $rln0->from_realisation($rln1, $rln1_instant);

This class implements a realisation of Terrestrial Time (TT) by interpolation between known points of correlation between the realisation and International Atomic Time (TAI). See Time::TT::Realisation for the interface.

CONSTRUCTOR

Normally one wont use this constructor directly. See the tt_realisation function in Time::TT, which will construct a range of published realisations, most of which are implemented using this class. Use this directly only if the realisation that you desire is not available by that means.
Time::TT::InterpolatingRealisation->new(INTERPOLATOR)

Constructs and returns an object representing a realisation of TT that is defined by isolated points of correlation between it and TAI. The INTERPOLATOR argument must be an object of a subclass of Math::Interpolator, supplying the x and y methods. The x coordinate of the interpolators curve must represent TAI, and the y coordinate the realisation of interest. Times on both coordinates are represented as the number of seconds since the 1958 epoch, as described in Time::TT. All numbers must be Math::BigRat objects.

The class Time::TT::OffsetKnot may be useful in building the required interpolator.