org.das2.math.QuadFitUtil
polyfitw
polyfitw( double[] x, double[] y, double[] w, int degree ) → double[]
Parameters
x - a double[]
y - a double[]
w - a double[]
degree - an int
Returns:
double[]
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quadHalfWidth
quadHalfWidth( double[] c, double dy ) → double
Parameters
c - a double[]
dy - a double
Returns:
double
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quadPeak
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)
Parameters
c - a double[]
Returns:
double
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quadfit
quadfit( double[] x, double[] y, double[] w ) → double[]
Parameters
x - a double[]
y - a double[]
w - a double[]
Returns:
double[]
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