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Day 11 (Arctic): Antantarctic = Arctic. I have never seen a polar centered antipodes map, so I was curious to see antarctica brought to the north. I used the BecaGIS plugin in QGIS to create antipodes of the continent and cleaned things up in inkscape. (Had to swap days for travel reasons. Pen and paper shall follow)

@koriander my apologies ... I saw this and had to try to reproduce in code:

gist.github.com/mdsumner/e4aec

yours looks way better but I'm happy it worked as I expected (the software is way more workable these days!)

Gistant_antarctica.mdGitHub Gist: instantly share code, notes, and snippets.
koriander

@mdsumner Wow! No need for apologies and thank you for crediting! I guess I have to get into R one of these days. Your code looks very concise. I'm impressed.