public bool Test(double start_wl, double end_wl, double max_slope, double min_slope, double max_error,
out bool noisyFit, out double slope)
{
noisyFit = false;
//normalize
var curve = _spectrum.SpectrumData;
var x = curve.Select(p => p.X).ToArray();
var y = curve.Select(p => p.Y).ToArray();
var minY = y.Min();
var maxY = y.Max();
y = y.Select(p => (p - minY) / (maxY - minY)).ToArray();
curve = x.Zip(y, (xp, yp) => new System.Windows.Point(xp, yp)).ToList();
var roi = curve.Where(p => p.X >= start_wl && p.X <= end_wl).ToList();
x = roi.Select(p => p.X).ToArray();
y = roi.Select(p => p.Y).ToArray();
var linear = Fit.Line(x, y);
double intercept = linear.Item1;
double s = linear.Item2;
var standardError = GoodnessOfFit.PopulationStandardError(x.Select(d => s * d + intercept), y);
if (Math.Round(standardError, 3) > max_error)
{
noisyFit = true;
}
slope = s;
bool res = (!noisyFit) && (slope >= min_slope) && (slope <= max_slope);
return(res);
}