Category Archives: Javascript

D3.js chord chart experiment

In response to an /r/datavizrequests submission, where a user provided this dataset, and requested a relationship mapping. I created a few visualizaitons using a web visualization library called D3.js. I used Mike Bostock’s Chord example to render these Chord Charts.

6 Concepts

20 Concepts

Here is a link to the interactive version. Highlighting a concept will isolate its relationships.





Javascript: Plot point on GoogleMaps using coordinates Latitude and Longitude

How to place a tack  or knife a map. Throw darts programmatically .

a google map

Here is the javascript,

you need your own google maps api key.

<!DOCTYPE html>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
html { height: 100% }
body { height: 100%; margin: 0; padding: 0 }
#map_canvas { height: 100% }
<script type="text/javascript"
<script type="text/javascript">
function initialize() 
var myOptions = {center: new google.maps.LatLng(38.4686, -123.0028),
 zoom: 12,
 mapTypeId: google.maps.MapTypeId.ROADMAP
var map = new google.maps.Map(document.getElementById("map_canvas"),myOptions);
var lat = 38.4686;		
var long = -123.0028;
 marker = new google.maps.Marker({
position: new google.maps.LatLng(lat, long),
map: map
<body onload="initialize()">
<div id="map_canvas" style="width:60%; height:60%"></div>

Now you can write your name on islands! : D


Javascript: How to parse xml, write to html5 local storage, then read from local storage, and allow user to search content.

This simple example will demonstrate how to use javascript to write to, and read from, html5 local storage.

The file being parsed and saved is books.xml.  There are two html pages here, LAUNCH.html and OFFLINE.html.

LAUNCH.html will parse the xml file and write it to the user’s browser:

OFFLINE.html will allow the user to search the content of their local storage

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