hyperspy._components.gaussian2d module¶

class hyperspy._components.gaussian2d.Gaussian2D(A=1.0, sigma_x=1.0, sigma_y=1.0, centre_x=0.0, centre_y=0, module='numexpr', **kwargs)¶

Bases: hyperspy._components.expression.Expression

Normalized 2D elliptical Gaussian function component.

$f(x,y) = \frac{A}{2\pi s_x s_y}\exp\left[-\frac{\left(x-x_0\right) ^{2}}{2s_{x}^{2}}\frac{\left(y-y_0\right)^{2}}{2s_{y}^{2}}\right]$

Variable	Parameter
$A$	A
$s_x,s_y$	sigma_x/y
$x_0,y_0$	centre_x/y

Parameters

A (float) – Amplitude (height of the peak scaled by $2 \pi s_x s_y$ ).
sigma_x (float) – Width (scale parameter) of the Gaussian distribution in x direction.
sigma_y (float) – Width (scale parameter) of the Gaussian distribution in y direction.
centre_x (float) – Location of the Gaussian maximum (peak position) in x direction.
centre_x – Location of the Gaussian maximum (peak position) in y direction.

For convenience the fwhm_x and fwhm_y attributes can be used to get and set the full-with-half-maxima along the two axes.

property fwhm_x¶

property fwhm_y¶