\(\newcommand{L}[1]{\| #1 \|}\newcommand{VL}[1]{\L{ \vec{#1} }}\newcommand{R}[1]{\operatorname{Re}\,(#1)}\newcommand{I}[1]{\operatorname{Im}\, (#1)}\)

Arrays, images and plotting

Teaching

We will be using the background from the tutorial pages from the scipy lecture notes:

• The numpy array object;
• Array operations.

We’ll cover:

• numpy arrays;
• plotting with matplotlib;
• arrays can be displayed as images;
• a 2D array is a 2D image;
• 3D arrays and brain volumes;
• reshaping and slicing arrays;
• histograms;

See:

• Arrays as images, images as arrays;
• Reshaping and three-dimensional arrays.

Setup

See: associating text editors with git.

Exercises

• Cameraman exercise;
• Anatomical exercise;
• Find the arteries exercise.

Reading and homework for next week

• Read, learn, inwardly digest the curious git tutorial;
• Watch the videos at First steps with git.