David Haberthür habi

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1944 Simple Sabotage Field Manual, by Strategic Services

https://www.cia.gov/news-information/featured-story-archive/2012-featured-story-archive/CleanedUOSSSimpleSabotage_sm.pdf

Title: Simple Sabotage Field Manual Author: Strategic Services Office of Strategic Services

Himawari-8 animation tutorial

Here’s how to make animations like this one. It requires intermediate Unix command-line knowledge, to install some tools and to debug if they don’t work. You’ll need these utilities:

curl (or you can translate to wget)
convert and montage, part of ImageMagick
ffmpeg, plus whatever codecs
parallel, for iteration that’s nicer than shell for loops or xargs
run everything in zsh for leading 0s in numerical ranges to work

Commonly used scientific symbols in pandoc markdown

encoding is UTF-8, needs xelatex, like this:

---
output:
  pdf_document:
    latex_engine: xelatex
---

	<!DOCTYPE html>
	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
	<meta content='width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0' name="viewport" />
	<link rel="icon" href="data:,">
	<title>String art</title>
	<script type="text/javascript" src="jquery.min.js"></script>
	<style>
	html, body {

	import collections
	import math
	import os
	import cv2
	import numpy as np
	import time

	MAX_LINES = 4000
	N_PINS = 36*8
	MIN_LOOP = 20 # To avoid getting stuck in a loop

	# Output a single frame from the video into an image file:
	ffmpeg -i input.mov -ss 00:00:14.435 -vframes 1 out.png

	# Output one image every second, named out1.png, out2.png, out3.png, etc.
	# The %01d dictates that the ordinal number of each output image will be formatted using 1 digits.
	ffmpeg -i input.mov -vf fps=1 out%d.png

	# Output one image every minute, named out001.jpg, out002.jpg, out003.jpg, etc.
	# The %02d dictates that the ordinal number of each output image will be formatted using 2 digits.
	ffmpeg -i input.mov -vf fps=1/60 out%02d.jpg