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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Leaflet Intro</title>
<meta name="description" content="An introductory web development workshop for the DDJC">
<meta name="author" content="Aisha Blake">
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui">
<link rel="stylesheet" href="css/reveal.css">
<link rel="stylesheet" href="css/theme/solarized.css" id="theme">
<!-- Code syntax highlighting -->
<link rel="stylesheet" href="lib/css/zenburn.css">
<link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet/v0.7.7/leaflet.css" />
<link rel="stylesheet" href="styles/main.css">
<!-- Printing and PDF exports -->
<script>
var link = document.createElement( 'link' );
link.rel = 'stylesheet';
link.type = 'text/css';
link.href = window.location.search.match( /print-pdf/gi ) ? 'css/print/pdf.css' : 'css/print/paper.css';
document.getElementsByTagName( 'head' )[0].appendChild( link );
</script>
<!--[if lt IE 9]>
<script src="lib/js/html5shiv.js"></script>
<![endif]-->
</head>
<body>
<div class="reveal">
<!-- Any section element inside of this container is displayed as a slide -->
<div class="slides">
<section>
<img src="images/leaflet.jpeg" class="img--bare" height="200px" />
<div class="box--small">
<h2><span class="blue">Intro to Leaflet.js</span></h2>
</div>
</section>
<section data-markdown>
### Review
</section>
<section class="hide-pdf">
<h3>What Is Leaflet.js?</h3>
<p class="box copy--small">
<ul class="list--tall copy--small box--small">
<li>Leaflet.js is a javascript library for making interactive maps</li>
<li>It allows the telling of stories through map-making</li>
<li>It supports mobile and desktop platforms</li>
<li>It is one of the most important JavaScript mapping libraries</li>
<li>It is used by major websites such as FourSquare, Pinterest and Flickr</li>
</ul>
</p>
</section>
<section>
<h4>How to find Lat and Long with Google Maps</h4>
<img src="images/Detroit1.png" class="img--bare" height="450px" />
</section>
<section>
<h4>How to find Lat and Long with Google Maps</h4>
<img src="images/Detroit2.png" class="img--bare" height="400px" />
</section>
<section>
<h4>How to find Lat and Long with Google Maps</h4>
<img src="images/Detroit3.png" class="img--bare" height="400px" />
</section>
<section>
<h4> Adding A Map to HTML </h4>
<img src="images/Detroit3.png" class="img--bare" height="400px" />
</section>
<section>
<h4> Preparing Your Page</h4>
<img src="images/Detroit3.png" class="img--bare" height="400px" />
</section>
<section>
<h4> Preparing Your Page</h4>
<ul class="list--tall copy--small box--small">
<li>Include Leaflet CSS file in the head section of your document: </li>
</ul>
<pre >
<code>
< link rel="stylesheet" href="http://cdn.leafletjs.com/leaflet/v0.7.7/leaflet.css" />
</code>
</pre>
<ul class="list--tall copy--small box--small">
<li>Include Leaflet JavaScript file: </li>
</ul>
<pre>
<code>
< script src="http://cdn.leafletjs.com/leaflet/v0.7.7/leaflet.js" > < /script >
</code>
</pre>
</section>
<section>
<h4> Preparing Your Page</h4>
<ul class="list--tall copy--small box--small">
<li>Put a div element with a certain id where you want your map to be:</li>
</ul>
<pre >
<code>
< div id="map" > </ div >
</code>
</pre>
<ul class="list--tall copy--small box--small">
<li> Make sure the map container has a defined height, for example by setting it in CSS: </li>
</ul>
<pre>
<code>
#map { height: 180px; }
</code>
</pre>
</section>
<section>
<h4> Setting up the map</h4>
<ul class="list--tall copy--small box--small">
<li> Let’s create a map of the center of Detroit </li>
<li> First we’ll initialize the map and set its view to our chosen geographical coordinates and a zoom level: </li>
</ul>
<pre style="height: 300px;" >
<code>
var map = L.map('map').setView([42.329787, -83.070375], 13);
L.tileLayer('http://{s}.tile.osm.org/{z}/{x}/{y}.png', {
attribution: '© <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
}).addTo(map);
</code>
</pre>
</section>
<section>
<h3>Using a Map to Tell Stories</h3>
<ul class="list--tall copy--small box--small">
<li>You can add different components to your map to help you tell a story</li>
<li>These components include shapes, popups, and images</li>
</ul>
</section>
<section>
<h4> Shapes </h4>
<img src="images/polygons.jpeg" class="img--bare" height="300px" />
</section>
<section>
<h4> Popups </h4>
<img src="images/popup.png" class="img--bare" height="400px" />
</section>
<section>
<h4> Pictures </h4>
<img src="images/flower_icon.png" class="img--bare" height="200px" />
</section>
<section>
<h3>Quick Brainstorming Questions</h3>
<ul class="list--tall copy--small box--small">
<li>What components would you like to use to tell a story?</li>
</ul>
</section>
<section>
<h3>Adding a Circle to the Map</h3>
<ul class="list--tall copy--small box--small">
<li>Add a circle around your house. Look up area code to get the latitude and longitude</li>
</ul>
<pre>
<code>
var circle = L.circle([(your lat), (your lng)], 500, {
color: 'red',
fillColor: '#f03',
fillOpacity: 0.5
}).addTo(map);
</code>
</pre>
<ul class="list--tall copy--small box--small">
<li>Add code snippet</li>
<li>Change color</li>
<li>Change transparency</li>
</ul>
</section>
<section>
<h3>Add a Popup to a Map</h3>
<ul class="list--tall copy--small box--small">
<li>What would you like to change in the City of Detroit? Where would you like to change it?</li>
<li>Find the address, get the latitude and longitude</li>
<li>Add a pop up to that location</li>
<li>Add text to the pop up to describe what kind of change you would like to see</li>
</ul>
<pre style="height: 100px;" >
<code>
var popup = L.popup()
.setLatLng([51.5, -0.09])
.setContent("What would you like to change?")
.openOn(map);
</code>
</pre>
</section>
<section>
<h3>Add an Image to a Map</h3>
<ul class="list--tall copy--small box--small">
<li>What is an event that you like to do in Detroit?</li>
<li>Find a picture of that event using google images</li>
<li>Find the address. Get the latitude and longitude</li>
<li>Add the image to the map using the retrieved latitude and longitude</li>
</ul>
<pre style="height: 100px;" >
<code>
var myIcon = L.icon({
iconUrl: 'soccer.jpeg',
iconSize: [30, 30],
iconAnchor: [22, 94],
popupAnchor: [-3, -76],
});
L.marker([(your lat), (your lng)], {icon: myIcon}).addTo(map
</code>
</pre>
</section>
<section data-markdown>
### Discussion
</section>
<section data-markdown>
### Voting
</section>
<section data-markdown>
### Closing
</section>
</div>
</div>
<script src="lib/js/head.min.js"></script>
<script src="js/reveal.js"></script>
<script>
// Full list of configuration options available at:
// https://github.com/hakimel/reveal.js#configuration
Reveal.initialize({
controls: true,
progress: true,
history: true,
center: true,
transition: 'slide', // none/fade/slide/convex/concave/zoom
// Optional reveal.js plugins
dependencies: [
{ src: 'lib/js/classList.js', condition: function() { return !document.body.classList; } },
{ src: 'plugin/markdown/marked.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'plugin/markdown/markdown.js', condition: function() { return !!document.querySelector( '[data-markdown]' ); } },
{ src: 'plugin/highlight/highlight.js', async: true, callback: function() { hljs.initHighlightingOnLoad(); } },
{ src: 'plugin/zoom-js/zoom.js', async: true },
{ src: 'plugin/notes/notes.js', async: true }
]
});
</script>
<script src="http://cdn.leafletjs.com/leaflet/v0.7.7/leaflet.js"></script>
<script src="js/app.js"></script>
</body>
</html>