This year was the first #genuary. It was really fun, I did more plots than I expected and learned a lot! All the plots were made in R, the code for every one of them is available on GitHub.

JAN.1 (credit: Piter Pasma)
// TRIPLE NESTED LOOP

JAN.2 (credit: Harold)
Rule 30 (elementary cellular automaton)

JAN.3 (credit: Sam Corzine)
Make something human.

JAN.4 (credit: Louis-André Labadie)
Small areas of symmetry.

JAN.5 (credit: Louis-André Labadie)
Do some code golf! How little code can you write to make something interesting? Share the sketch and its code together if you can.

JAN.6 (credit: Stevan Dedovic)
Triangle subdivision.

JAN.7 (credit: Louis-André Labadie)
Generate some rules, then follow them by hand on paper.

JAN.8 (credit: Licia He)
Curve only.

JAN.9 (credit: Sam Corzine)
Interference patterns.

JAN.10 (credit: Piter Pasma)
// TREE

JAN.11 (credit: Piter Pasma)
Use something other than a computer as an autonomous process (or use a non-computer random source).

JAN.12 (credit: Jonathan Barbeau)
Use an API (e.g. the weather). Here’s a huge list of free public APIs.

JAN.13 (credit: Louis-André Labadie)
Do not repeat.

JAN.14 (credit: Piter Pasma)
// SUBDIVISION

JAN.15 (credit: Louis-André Labadie)
Let someone else decide the general rules of your piece.

JAN.16 (credit: Aaron Penne)
Circles only

JAN.17 (credit: Louis-André Labadie)
Draw a line, pick a new color, move a bit.

JAN.18 (credit: Piter Pasma)
One process grows, another process prunes.

JAN.19 (credit: Piter Pasma)
Increase the randomness along the Y-axis.

JAN.20 (credit: Aaron Penne)
No loops.

JAN.21 (credit: Harold)
function f(x) {
DRAW(x);
f(1 * x / 4);
f(2 * x / 4);
f(3 * x / 4);
}

JAN.22 (credit: Louis-André Labadie)
Draw a line. Wrong answers only.

JAN.23 (credit: Richard Vigniel)
&#35264653 &#352a9d8f &#35e9c46a &#35f4a261 &#35e76f51, no gradients.
Optionally, you can use a black or white background.