Exercises

Short exercises for learning mcdonald on real videos. Each one says what to do in the window and on the command line, and what answer you should get, so you can check your own work. They use the public PURSUE videos, which mcdonald downloads for you by name.

You need mcdonald installed and set up first: see Install.

	Exercise	You learn	Download
1	Birdwatching (PR44)	open part of a video by name, press one button, and see a bird's wingbeat in the report	87 MB
2	A ship for a ruler (PR149)	turn a speed on the screen into a real speed with something of known size in the picture	55 MB
3	A known field of view (PR113)	give the horizontal field of view, and read what the speed would be at each distance	67 MB
4	Six at once (PR135)	say how many objects you are looking for, and see a flock taken apart into its birds	23 MB

Tell us how it went

When you finish an exercise, please send us your result, whether or not it matched. It takes a couple of minutes, and you need a free GitHub account. A result that matched tells us mcdonald works on your computer. One that did not, or a step that was hard to follow, tells us what to fix.