kghose

// compile with:
//  g++ -O2 --std=c++14 -Rpass=inline main.cpp 2> >(grep "pages_from_the_fire" -A1)
// 
#include <iostream>
#include <vector>


class Base {
public:
  virtual int pages_from_the_fire() { return ++x; }

kghose

"""
Show us how adding more terms to regular polynomials are good at some
functions (sines for example) but fail with others, such as Runge's
function.

Show how chebyshev nodes help.
"""
import numpy as np

import matplotlib.pyplot as plt

kghose

#include <iostream>
#include <unordered_map>

#include "default.hpp"

class Talkative : public TalkativeBase
{

public:
  Talkative& operator=(const Talkative& t)  

kghose

kghose

/*
 * Quick experiment to demonstrate touch screen debouncing/smoothing
 */

#include <Elegoo_GFX.h>    // Core graphics library
#include <Elegoo_TFTLCD.h> // Hardware-specific library
#include <TouchScreen.h>

#define YP A3  // must be an analog pin, use "An" notation!
#define XM A2  // must be an analog pin, use "An" notation!

kghose

# Shows networking with bash (/dev/udp)
# Shows interpreting hex strings as bytes

BCASTIP=${1}
WOLPORT=7

MAGIC="\xff\xff\xff\xff\xff\xff"

MAC=$(echo ${2} | tr ':' ' ')  
# Expects mac address to be punctuated by colons ':', transforms 

kghose

"""
Demo code for showing how a Self-Organized Map (Kohonen Map) learns handwritten digit data in an
unsupervised manner.

Data source: https://archive.ics.uci.edu/ml/machine-learning-databases/optdigits/

This code uses 'optdigits.tra'
Each line is a handwritten digit.
The first 64 numbers are gray levels for an 8 x 8 image.
The last number is the digit class.

kghose

"""Simple simulator to explore conditional independence in Bayesian networks

Node representation:

Say the node is has two parents named L and K and the probability table is

       L | K | p(T)
      --------------
       F | F | 0.2
       F | T | 0.4

kghose

"""
The URL format is documented at http://ssd.jpl.nasa.gov/horizons_batch.cgi
I figured out the template by using the webinterface to make a query I wanted and then
clicking 'batch-file' to see how the batch file commands would look like.

Also see https://github.com/mommermi/callhorizons by Michael Mommert

"""
import urllib.request
import time

kghose

#lang racket
;; Visualize a sum of two 3D Gaussians as concentric isosurfaces
;; Note: this example requires Racket 5.2 or later

(require plot)

;; Returns an R x R x R -> R Gaussian function centered at (cx,cy,cz)
(define ((gaussian cx cy cz) x y z)
  (exp (- (+ (sqr (- x cx)) (sqr (- y cy)) (sqr (- z cz))))))