During the year I turned some plot that I like into postcards. If you like them, feel free to print them and give them as a gift.
The source code is here.
Tartan
AKA: R packages downloaded from CRAN.
In green:

And in red:

Galaxy
AKA: Gene Expression Correlation.
In white:

And in blue:

Christmas Tree
AKA: A rice panicle.
In blue:

And in red:
