Fergus Noble fnoble

fnoble / BMW ambiguities_MatrixBuild (4).ipynb

Created March 28, 2019 08:57

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fnoble / ADT.hs

Last active March 24, 2016 02:18

Intro to Haskell ADTs

	module ADT where

	import Prelude hiding (Bool, True, False,
	negate, and, or,
	List, Cons, Nil,
	Maybe, Just, Nothing,
	Either, Left, Right,
	Tree, Node, Leaf)

	-- Simplest ADT

fnoble / Main.hs

Last active March 22, 2016 01:13

Euler 5 Haskell Golf

	-- Much better
	foo :: Int -> Int -> Int
	foo x acc = if acc `mod` x == 0 then acc else lcm acc x
	mult20 = foldr foo 1 [1..20]

	-- 1st try
	primes = [2 :: Integer, 3, 5, 7, 11, 13, 17, 19]
	isInt x = (x :: Double) == fromInteger (round x)
	power p x = length $ takeWhile id $ drop 1 $ map isInt $ iterate (/ fromInteger p) $ fromInteger x
	mult20 = foldr (*) 1 $ zipWith (^) primes $ map maximum $ map (\p -> map (power p) [1..20]) primes

fnoble / sdiff_empty.c

Last active September 22, 2016 21:52 — forked from mookerji/sdiff_empty.c

single diff measurement question (intersection of two structs via prns)

	// Compiles with gcc -O0 single_diff_libswiftnav.c

	#include <stdint.h>
	#include <stdbool.h>
	#include <string.h>
	#include <stdio.h>
	#include <inttypes.h>

	typedef uint8_t u8;
	typedef uint16_t u16;

fnoble / example.c

Last active August 29, 2015 14:16

Swift Navigation Doxygen style example

	/** Brief description which ends at this dot.
	* Details follow here.
	*
	* \todo Fix the bugs
	*
	* \param a Description of first argument
	* \param b Description of second argument
	* \return Descripton of the return value
	*/
	float lolz(int a, int b)

fnoble / sbp_example.py

Last active May 31, 2023 22:23

SBP decoding example with Python

	# This gist has been moved into libsbp:
	# https://github.com/swift-nav/libsbp/blob/master/python/sbp/client/examples/simple.py

fnoble / gist:8855189

Created February 7, 2014 00:15

Pandas Panel problem

	import pandas

	wp = pandas.Panel(randn(2, 5, 4), items=['Item1', 'Item2'],
	major_axis=pandas.date_range('1/1/2000', periods=5),
	minor_axis=['A', 'B', 'C', 'D'])
	wp2 = pandas.Panel(randn(3, 5, 4), items=['Item1', 'Item2', 'Item3'],
	major_axis=pandas.date_range('1/1/2000', periods=5),
	minor_axis=['A', 'B', 'C', 'D'])

	wp.sub(wp2).ix[:, :, 'A']

fnoble / gist:1984425

Created March 6, 2012 06:54

Filters

	#define TAU_CROSSOVER 0.5
	#define TAU_BIAS (TAU_CROSSOVER*10)
	#define A (1e-3/TAU_CROSSOVER)
	#define B (1e-3/TAU_BIAS)

	double dll_update = chan->dll_pgain(chan->dll_disc-dll_disc_prev) + chan->dll_igainchan->dll_disc;
	double pll_update = (1.023e6/L1_HZ)(chan->pll_pgain(chan->pll_disc-pll_disc_prev) + chan->pll_igain*chan->pll_disc);

	// Original: