Michał Drzał xmichaelx

xmichaelx / simpleLineFitting.cs

Created February 24, 2016 14:49

Fitting line while minimizing least squares error

	Tuple<double, double> LinearLeastSquaresFit(List<Point> points)
	{
	double length = points.Count;
	double Sx = points.Sum(p=> p.X);
	double Sy = points.Sum(p => p.Y);
	double Sxx = points.Sum(p => Math.Pow(p.X,2));
	double Sxy = points.Sum(p => p.X * p.Y);

	var a = (Sxy * length - Sx * Sy) / (Sxx * length - Sx * Sx);
	var b = (Sxy * Sx - Sy * Sxx) / (Sx * Sx - length * Sxx);

xmichaelx / PasswordGenerator.cs

Last active March 31, 2017 23:11

password generation based on https://www.eff.org/dice

	using System;
	using System.Collections.Generic;
	using System.Linq;
	using System.Net;
	using System.Security.Cryptography;

	namespace PasswordGenerator
	{
	class Program
	{

xmichaelx / PasswordGenerator.html

Last active January 18, 2019 08:29

password generation based on https://www.eff.org/dice

	<html>
	<head>
	<script>
	function getDictionary() {
	var wordDictionary = {};
	document.getElementById("wordlist").value.trim().split("\n").forEach(line => {
	var tokens = line.split("\t");
	wordDictionary[tokens[0]] = tokens[1];
	});
	return wordDictionary;

xmichaelx / get_name.py

Created May 20, 2017 16:29

gets name of the raspberry pi device it operates on

	def get_revision():
	try:
	with open('/proc/cpuinfo','r') as f:
	for line in f:
	if line.startswith('Revision'):
	return line.split(":")[1].strip()
	except:
	return None

	# sourced from: http://www.raspberrypi-spy.co.uk/2012/09/checking-your-raspberry-pi-board-version/

xmichaelx / wallet_worth_estimator.html

Last active August 31, 2017 14:26

Computes estimated wallet value using CoinMarketCap API and some JS

	<!DOCTYPE html>
	<html>
	<head>
	<title>Wallet worth estimator</title>
	<meta name="description" content="Small snippet of code for estimating worth of your crypto wallet">
	<meta name="author" content="Michał Drzał - michal.drzal@gmail.com">
	<meta name="version" content="0.1.1">
	<script>
	var portfolio = (function() {
	function add(currency, amount, usdValue) {

xmichaelx / detrac_convert.sh

Created October 28, 2018 13:43

converts detrac individual image frames into video

	for D in `find . -mindepth 1 -type d`
	do
	ffmpeg -i ${D}/img%05d.jpg -c:v libx264 -vf fps=25 ${D}.mp4
	done