clody69’s gists

clody69 / recommend.rb

Created September 26, 2012 17:50

Movie Recommendation Engine with Neography, Cypher and Neo4j

clody69 / server.rb

Last active December 15, 2015 20:59

Password-less Authentication by email. Inspired by some of Luke's writings on login and password usability issues (http://www.lukew.com/ff/entry.asp?1487, http://alistapart.com/article/signupforms), I have decided to test an authentication mechanism without passwords. In simple terms this can be seen as a combination of the "remember me" and "fo…

	require 'sinatra'
	require 'haml'

	$users = {'john' => {:roles => [:user] }, 'mike' => {:roles => [:user, :admin] } }
	$tokens = {'123' => {:username => 'john', :expires_at => Time.now+60}}

	helpers do
	def authenticate_user!
	@auth_token = auth_token
	if $tokens.has_key?(@auth_token) && !$tokens[@auth_token][:expires_at].nil? && $tokens[@auth_token][:expires_at] > Time.now

clody69 / geoconverter

Created October 4, 2013 19:05

Geoconverter from tile (z,y,zoom), to geodetic coordinates (lat, long) to elliptical mercator UTM in meters (x,y). http://www.maptiler.org/google-maps-coordinates-tile-bounds-projection/ http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames http://wiki.openstreetmap.org/wiki/Mercator



	module GeoConverter

	R_MAJOR = 6378137.0 #Equatorial Radius, WGS84
	R_MINOR = 6356752.314245179 #defined as constant

	def to_rad(d)
	d * (Math::PI / 180.0)
	end

clody69 / gist:d624278068fbc3761b9547428731d314

Created July 20, 2016 16:46

	Example of Json serailization

clody69 / gist:b28676ba0ab271fba9aa2ccba9af943d

Created July 20, 2016 16:46

Example of Json serialization from controller

//Example here

clody69 / git-mv-with-history

Created September 6, 2016 15:06 — forked from emiller/git-mv-with-history

git utility to move/rename file or folder and retain history with it.

	#!/bin/bash
	#
	# git-mv-with-history -- move/rename file or folder, with history.
	#
	# Moving a file in git doesn't track history, so the purpose of this
	# utility is best explained from the kernel wiki:
	#
	# Git has a rename command git mv, but that is just for convenience.
	# The effect is indistinguishable from removing the file and adding another
	# with different name and the same content.

clody69 / git-mv-new-repo

Created September 6, 2016 15:21

	# Instructions how to transfer several directories from one repo to another
	# while preserving the history

	git clone <git dest> dest
	git clone <git src> src

	# Prepare the source repo
	cd src
	git checkout <branch from where to copy the direcoties>

clody69 / download_funds.Rmd

Last active January 3, 2021 17:54

Download Funds

	---
	title: "Funds"
	output:
	html_document:
	df_print: paged
	---


	```{r include=FALSE, results="hide"}
	library(dplyr)

	# An example how to implement a movie recommendation engine using the neography gem
	# It's based on Marko Rodriguez article http://markorodriguez.com/2011/09/22/a-graph-based-movie-recommender-engine/
	# but here we use Cypher instead of Gremlin
	#
	# To run the example you have to install neo4j and the neography gem
	# You can download the data files from http://www.grouplens.org/node/73

	require 'neography'

	neo = Neography::Rest.new("http://localhost:7474")

Claudio Riva clody69