all.h File Reference

#include <cmath>
#include <vector>
#include "lsst/afw/image/Image.h"

Go to the source code of this file.

Classes
struct	FittedModel

Functions
template<typename PixelT >
FittedModel	twodg (afwImage::Image< PixelT > const &im, double x0, double y0)

Function Documentation

template<typename PixelT >

FittedModel twodg	(	afwImage::Image< PixelT > const &	im,
		double	x0,
		double	y0
	)

Compute centroids with 2-D Gaussian fitter

Parameters

im	The image to fit
x0	Initial guess for position, column
y0	and row

Definition at line 456 of file twodg.cc.

                   {
/*
 * Initialize the fitting structure
 */
    Fit2d fit(im);
/*
 * Initialization
 */
    fg2(im, x0, y0, &fit);
    if (fit.status != 0) {
        std::vector<double> params(FittedModel::NPARAM);
        std::copy(&fit.elnew[0], &fit.elnew[0] + fit.elnew.size(), params.begin());

        return FittedModel(fit.status, params);
    }
/*
 * Find best-fit model
 */
    for (fit.iter = 0; fit.status == 0; ++fit.iter) {
        curf2(&fit);
        cond2(&fit);
    }

#if 0
    twodgMinuit(&fit);
#endif

    std::vector<double> params(FittedModel::NPARAM);
    std::copy(&fit.elnew[0], &fit.elnew[0] + fit.elnew.size(), params.begin());

    return FittedModel(fit.status, params, fit.iter, fit.flamd, fit.chnew);
}