43 lines
989 B
Go
43 lines
989 B
Go
package chart
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// LinearCoefficientProvider is a type that returns linear cofficients.
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type LinearCoefficientProvider interface {
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Coefficients() (m, b, stdev, avg float64)
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}
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// LinearCoefficients returns a fixed linear coefficient pair.
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func LinearCoefficients(m, b float64) LinearCoefficientSet {
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return LinearCoefficientSet{
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M: m,
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B: b,
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}
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}
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// NormalizedLinearCoefficients returns a fixed linear coefficient pair.
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func NormalizedLinearCoefficients(m, b, stdev, avg float64) LinearCoefficientSet {
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return LinearCoefficientSet{
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M: m,
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B: b,
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StdDev: stdev,
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Avg: avg,
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}
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}
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// LinearCoefficientSet is the m and b values for the linear equation in the form:
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// y = (m*x) + b
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type LinearCoefficientSet struct {
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M float64
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B float64
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StdDev float64
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Avg float64
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}
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// Coefficients returns the coefficients.
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func (lcs LinearCoefficientSet) Coefficients() (m, b, stdev, avg float64) {
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m = lcs.M
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b = lcs.B
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stdev = lcs.StdDev
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avg = lcs.Avg
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return
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}
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