Class lsst::meas::astrom::sip::LeastSqFitter2d

template<class FittingFunc>
class LeastSqFitter2d

Fit an lsst::afw::math::Function1 object to a set of data points in two dimensions.

The class is templated over the kind of object to fit. Note that we fit the 1d object in each dimension, not the 2d one.

Input is a list of x and y ordinates for a set of points, the z coordinate, and the uncertainties, s. order is order of the polynomial to fit (e.g if the templated function is lsst::afw::math::PolynomialFunction1, then order=3 => fit a function of the form \(ax^2+bx+c\)

See

LeastSqFitter1d

Template Parameters
Parameters

  • x: Ordinate of points to fit

  • y: Ordinate of points to fit

  • z: Co-ordinate of pionts to fit

  • s: 1 \(\sigma\) uncertainties in z

  • order: Polynomial order to fit