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# 0. Make sure you have Ruby 1.9.3 installed, and optionally RVM and PostgreSQL

# 0.2 If you are on the Mac, make sure you have a c compiler by installing XCode Command Line Tools or gcc4.2 with homebrew
# https://github.com/mxcl/homebrew/wiki/Custom-GCC-and-cross-compilers

# 0.5 Make sure you have bundler version ~> 1.2 as Rails depends on it
gem install bundler

# 1. Get edge Rails source (master branch)
git clone https://github.com/rails/rails.git

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To dump:

pg_dump dbname > dbname.sql

To restore:

cat dbname.sql | psql dbname

NOTICE:

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connect to postgres psql -h localhost

create database CREATE DATABASE mydatabase;

switch to your database \connect mydatabase

add postgis extension

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#!/usr/bin/env ruby

country_array = %w(
aruba                                       
afghanistan                                 
andorra                                     
angola                                      
anguilla                                    
albania                                     
united-arab-emirates                        

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<!-- #canvas is to store the generated SVG information -->
<canvas id="canvas" style="display:none;"></canvas>

<div class="title">
  Religion Population 2010
  <span class="download individual" title="download chart"></span>
  <span class="share individual" title="share chart"></span>    
</div>

<div class="chart">

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svg = $('svg').parent().html()
canvg('canvas', svg)
canvas = document.getElementById("canvas")
img_PNG = "<img src='#{canvas.toDataURL()}' />"

$('.chart').html(img_PNG)

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svg = $('svg').parent().html()
canvg('canvas', svg)
canvas = document.getElementById("canvas")
img_PNG = Canvas2Image.saveAsPNG(canvas, true)
 
$('.chart').html(img_PNG)

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pushToServer: ()->
  html2canvas([$(".hidden_container")[0]],{
    onrendered: (canvas)=>
      strDataURI = canvas.toDataURL()
      @temp_container.children().remove()
      @temp_container.hide()

      $.ajax
        url: '/svg/create'
        data: {svg: "#{strDataURI}"}

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# to invoke below code will pupup a download window and allow you to download a canvas as PNG file.
img_PNG = Canvas2Image.saveAsPNG(canvas);