Calibrating a dataset

There are two different ways to calibrate a dataset in pyxem and depending on what kind of data you have you may need to use each of these methods.

The first method is to basically ignore the Ewald sphere effects. This is the easiest method but not the most correct. For a 200+ keV microscope the assumption that the Ewald sphere is flat is not a bad one. For lower energy microscopes this assumption is not as great but still not terrible. For x-ray data with longer wavelengths this assumption starts to break down.

# import pyxem as pxm

# al = pxm.data.al_peaks()

# determine the pixel size from one peak

# al.calibrate(scale=0.1, center=None, units="k_nm^-1")
# al.plot()