Exercise

Slice 3D images

The simplest way to plot 3D and 4D images by slicing them into many 2D frames. Plotting many slices sequentially can create a "fly-through" effect that helps you understand the image as a whole.

To select a 2D frame, pick a frame for the first axis and select all data from the remaining two: vol[0, :, :]

For this exercise, use for loop to plot every 40th slice of vol on a separate subplot. matplotlib.pyplot (as plt) has been imported for you.

Instructions

100 XP

Using plt.subplots(), initialize a subplots grid with 1 row and 4 columns.
Plot every 40th slice of vol in grayscale. To get the appropriate index, multiply ii by 40.
Turn off the ticks, labels, and frame for each subplot.
Render the figure.