Plot nice master pattern image

This example shows you how to plot a nice and clean image of an EBSD master pattern. More details are given in the visualization tutorial.

Imports.

import matplotlib.pyplot as plt
import numpy as np

import kikuchipy as kp

Load both hemispheres of master pattern in stereographic projection.

mp = kp.data.nickel_ebsd_master_pattern_small(hemisphere="both")
print(mp)

<EBSDMasterPattern, title: ni_mc_mp_20kv_uint8_gzip_opts9, dimensions: (2|401, 401)>

Extract the underlying data of both hemipsheres and mask out the surrounding black pixels.

data = mp.data.astype("float32")
mask = data[0] == 0
data[:, mask] = np.nan

Plot both hemispheres with labels.

fig, (ax0, ax1) = plt.subplots(ncols=2, layout="tight")
ax0.imshow(data[0], cmap="gray")
ax1.imshow(data[1], cmap="gray")
ax0.axis("off")
ax1.axis("off")
ax0.set_title("Upper")
ax1.set_title("Lower")

Text(0.5, 1.0, 'Lower')