graphinglib.FitFromSine.__init__#

FitFromSine.__init__(curve_to_be_fit: Curve | Scatter, label: str | None = None, guesses: ArrayLike | None = None, color: str = 'default', line_width: str = 'default', line_style: str = 'default') None[source]#

Create a curve fit (continuous Curve) from an existing Curve object using a sinusoidal fit.

Fits a sine function of the form \(f(x) = a sin(bx + c) + d\) to the given curve. All standard Curve attributes and methods are available.

Parameters:
curve_to_be_fitCurve or Scatter

The object to be fit.

labelstr, optional

Label to be displayed in the legend.

guessesArrayLike, optional

Initial guesses for the parameters of the fit (order: amplitude (a), frequency (b), phase (c), vertical shift (d) as written above).

colorstr

Color of the curve. Default depends on the figure_style configuration.

line_widthint

Line width of the curve. Default depends on the figure_style configuration.

line_stylestr

Line style of the curve. Default depends on the figure_style configuration.

Attributes:
amplitudefloat

Amplitude of the sine function.

frequency_radfloat

Frequency of the sine function in radians.

frequency_degfloat

Frequency of the sine function in degrees.

phase_radfloat

Phase of the sine function.

phase_degfloat

Phase of the sine function in degrees.

vertical_shiftfloat

Vertical shift of the sine function.

parametersnp.ndarray

Parameters of the fit (amplitude, frequency (rad), phase (rad), vertical shift)

cov_matrixnp.ndarray

Covariance matrix of the parameters of the fit.

standard_deviationnp.ndarray

Standard deviation of the parameters of the fit.

functionCallable

Sine function with the parameters of the fit.