org.das2.math.QuadFitUtil

polyfitw

polyfitw( double[][] x, double[][] y, double[][] w, int degree ) → double[]

x - a double[]
y - a double[]
w - a double[]
degree - an int

quadHalfWidth( double[][] c, double dy ) → double

c - a double[]
dy - a double

quadPeak( double[][] c ) → double

The peak of the quadradic. y = c0 + c1*x + c2x^2 dy/dx = c1 + 2*c2*x for dy/dx == 0, x = -c1/(2*c2)

c - a double[]

quadfit( double[][] x, double[][] y, double[][] w ) → double[]

x - a double[]
y - a double[]
w - a double[]