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richard-to / knn1.py
Created November 4, 2014 06:44
kNN implementations with Pandas based on examples from ML in Action by Peter Harrington
import math
import numpy as np
def createDataSet():
"""
Creates a basic data set labels.
The labels are the classification given to the points. The data
is hardcoded in this toy example.
@richard-to
richard-to / router.js
Last active August 29, 2015 14:05
Simple HTML5 history router. No dependencies. No fallback if HTML5 history is not supported. Just ignored. Work in progress. Untested.
(function() {
// Source: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray
if (!Array.isArray) {
Array.isArray = function(arg) {
return Object.prototype.toString.call(arg) === '[object Array]';
};
}
var _delim = '/';
var _regexDelim = "\\/";
#! /usr/bin/env python
import argparse
from datetime import datetime
from serial import Serial
from sqlite3 import ProgrammingError
from time import sleep
from core import DataParser, SensorReadingsDataStore, MessageFormatError
from utils import get_config, create_logger_from_config, parse_sensor_types_config
@richard-to
richard-to / gist:0fb1e384084c20ffaa42
Created July 28, 2014 15:32
Random snippet to zip separate columns into list and then turn each row into dict.
keys = ('FacilityID', 'FacilityName', 'City', 'Zip', 'Score', 'InspDate')
facilities_data = [data[key].split('|') for key in keys]
facilities = [dict(zip(keys, row)) for row in zip(*facilities_data)]
@richard-to
richard-to / Gruntfile.js
Created July 19, 2014 09:30
Gruntfile vs. gulpfile...
module.exports = function(grunt) {
grunt.initConfig({
pkg: grunt.file.readJSON('package.json'),
clean: ['js', 'css', 'fonts'],
copy: {
main: {
files: [
{
@richard-to
richard-to / BridgeSensorD.ino
Last active August 29, 2015 14:03
6 BridgeSensor Tests with Full Kit
/*
Bridge Sensor with GSM, SDCard, and RTC
Sketch used by ARTF Sensors platform.
Created 14 6 2014
Modified 13 7 2014
*/
#include <LowPower.h>
@richard-to
richard-to / burn_image_to_sd_card.sh
Last active August 29, 2015 14:03
Burning image to SD Card on OSX using Terminal
#!/bin/bash
# First unzip the disc image with Keka: Right click on the xz file and then do "Open With" and pick Keka
# Next make sure you have an empty microSD card. 4GB minimum will be required.
# List disks on system and find location of microSD card. Look for the 4GB one
diskutil list
# WARNING: Make sure you selected the correct disk. You do not want to overwrite your hard drive,
@richard-to
richard-to / gist:eaa10f06f550a7ae4bf8
Created July 2, 2014 23:45
Quick and dirty script to generate fake sensor data for testing
function r(min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}
var type = 's';
var start_time = 1404313860;
var interval = 2;
var readings = 10;
for (var g = 0; g < 10; g++)
{
def datetime_to_timestamp(date, date_format):
"""
Converts date/time string to unix timestamp. Note that
the date/time string will interpreted using the local
timezone on your system.
The resulting unix timestamp will be in GMT time.
"""
dt = datetime.strptime(date, date_format)
return int(time.mktime(dt.timetuple()))
@richard-to
richard-to / gist:0fcd4d5251a80121a731
Created June 6, 2014 00:59
Numpy slicing to get last column and everything but last column
data = np.array([
[1.0, 1.1, 1],
[1.0, 1.0, 1],
[0.0, 0.0, 2],
[0.0, 0.1, 2],
])
labels = data[:,-1]
points = data[0:,:-1]