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Seo Master present to you: By Phoebe Peronto, Developer Marketing

This past weekend marked the beginning of the DevFest season with 10 local events reaching developers in 6 different countries. Local Google Developer Groups spearheaded these community-organized events, offering technical sessions, hackathons, and code labs across various Google product areas. There was too much excitement and feedback to fit into a post without making it enormous, so we’ve chosen some highlights from both organizers and participants.

DevFest Lille | Host: GDG Lille
“Merci à tous les organisateurs, c'était très intéressant :)” --Rémi Bruyère, DevFest Lille attendee

DevFest Jalandhar | Host: GDG Jalandhar City


DevFest London | Host: GDG London
With over 100 developers in attendance and 10 hackathon entries submitted, DevFest London was a success!  We had nine Googlers giving back-to-back developer talks for the day, on everything from Android to Chrome to Google+, with some Drive and Google TV for good measure. The biggest highlight was our mid-afternoon keynote from Michael Mahemoff with his ten moments that changed the web - from Netscape to Chrome and a special mention of Nyan Cat. -- Mark Lunney, GDG London Lead Organizer
“+Michael Mahemoff 's talk on top 10 moments that changed the web is awesome - it boosts morale for our commitment to HTML5 and JavaScript … The Nyan cat at the end rocks.” -- Shah Auckburaully, London DevFest attendee

DevFest NIT Trichy | Host: GDG NIT Trichy
We had an amazing DevFest here at NIT Trichy yesterday! I feel proud to say that DevFest Trichy was a success and the turnout was wonderful.  The talks by Shannon Behrens and Ido Green were really good and our developer community did find it informative. Abhishek Shrivastava's interactive session on developing hacks and apps using Google Chrome APIs was a hit especially the "How-to-develop-a-Chrome-app-in-30-secs!".  GDG NIT Trichy looks forward to more such events in future. :) -- Jeh Agarwal, GDG NIT Trichy DevFest lead organizer

DevFest Shanghai | Host: GDG Shanghai
With 350 developers in attendance and sessions covering everything from Android and Chrome development, to Golang and HTML5, DevFest Shanghai was a hit.  Check out photos from the event -- Sting Chen, GDG Shanghai organizer

DevFest Gandhinagar | Host: GDG Gandhinagar
The major part of the event was based on Android Game Development and Open Mobile Platform. Dart session by Shannon Behrens was a big hit with the participants. Relive the Devfest experience with GDG Gandhinagar’s event photos. -- Deep Moteria, GDG Gandhinagar organizer

DevFest BITS Pilani | Host: GDG BITS-Pilani
Attendees at DevFest BITS Pilani were excited to engage with Google’s technologies. The entire GDG BITS Pilani team would like to thank Google and GDG for making our DevFest possible. This was a novel event for our attendees and we look forward to the return of an even bigger and better DevFest in the future!  -- Akash Saxena, GDG BITS-Pilani DevFest lead organizer

DevFest Manipal | Host: GDG Manipal
Crazy Day One! Close to 350 people turned up for it. +Soham Mondal was the main Speaker. Day two had full day speaker sessions including one by Ido Green and final day saw hackathon attended by 80 developers. Overall a fun developer event. - Nikhil Gupta, GDG Manipal organizer

DevFest Tijuana | Host: GDG Tijuana
Agradecemos a todos su participacion en el evento #SFD2012  + #DevFest   #GDG   #Tijuana  Fue todo un exito.

Want more details?  Visit the GDG event pages below to catch up on all things DevFest.
Shanghai
Lille
Manipal
Jalandhar
NIT Trichy
Gandhinagar
BITS Pilani
Tijuana
London
Sacramento

And, we’re just getting started.  See below for upcoming events.  
Bangalore
IIT Guwahati
Goa
Surabaya
Auckland
Colombo
Jakarta
Seattle
DC
Kyoto
Amman


DevFest season kicked off on September 21st and continues through November 11th.  Join your local developer community at an upcoming DevFest and discover the magic for yourself.  Visit devfest.info for more details and location updates.


Phoebe Peronto is an Associate Product Marketing Manager on the Developer Marketing team here at Google. She’s a foodie who has a penchant for traveling, politics, and running. Oh, and of course...Go Cal Bears!

Posted by Scott Knaster, Editor

2013, By: Seo Master

Seo Master present to you:
By Alexandra Levich, Product Manager

Cross-posted from the Chromium Blog

We recently expanded the reach of the Chrome Web Store from the U.S. to 24 more countries. Developers from around the world have already launched successful apps in the Chrome Web Store to US users. Now all developers can reach a global user base.

What makes this global reach even more interesting is the global payments infrastructure that goes along with it. The store allows developers from 20 countries to sell apps in the store, and users to buy apps in their local currency. We also recently launched the In-App Payments API, which allows developers (U.S.-only for now; international soon) to sell virtual goods in their apps. Integration is easy and transaction fees are only 5%. Graphicly, an early user of in-app payments, saw its net revenues double after starting to use the API and experienced an even bigger rise in profit margins due to increased conversions and lower transaction fees.

In keeping with our international theme, we’d like to highlight a few developers from different parts of the world who have utilized Chrome’s global reach to find success in the store:

• Audiotool is an online music production app that was built by a team of German developers. They saw the Chrome Web Store as a way to present their app to an international audience. Audiotool’s traffic increased by 20% after launching in the store, and this motivated the team to release another app in the store.
• Psykopaint is the brainchild of French developer Mathieu Gosselin. The Chrome Web Store provided Mathieu an opportunity to get his photo painting app noticed outside of France. Traffic to Psykopaint has jumped by 700% since it launched in the store and Mathieu has found that Chrome Web Store users tend to be more engaged than other users.
• Finally, Nulab, a Japanese company, launched its online diagramming app, Cacoo, in the store to expand its user base outside Japan. In just a few months after Cacoo was released in multiple languages in the Chrome Web Store, the app already accounts for 20% of Cacoo’s user base.

The experience of Audiotool, Psykopaint and Nulab shows that no matter where you’re located, you can always find a global audience for your applications in the Chrome Web Store. To learn more about the stories of these and other successful Chrome Web Store developers, read our case studies. And if you want to find out more about posting your app in the store, visit our documentation at code.google.com/chrome/webstore.


Alex Levich is a product manager working on Chrome Web Store.

Posted by Scott Knaster, Editor

2013, By: Seo Master

Seo Master present to you: By Nir Bar-Lev, Google Visualization Team

We recently came across a great use of the Visualization Platform. In fact, this is something that we never thought the platform would be used for.

Steve Aitken, a developer contributing to the Visualization Developer Group, created a simple graphics calculator for Javascript-supported math functions that plots functions using the Google Visualization Scatter Chart. Here is a screenshot of a simple calculation of -sin(2x):



Steve has been kind enough to share the code with us (even though it was originally written for his girlfriend). A slightly modified version is pasted below:

<html>
  <head>
    <script type="text/javascript" src="http://www.google.com/jsapi"></script>
    <script type="text/javascript">
      google.load("visualization", "1", {packages:["scatterchart"]});
      function drawChart(equation,xmin,xmax, numPoints, pointSize) {
        var data = new google.visualization.DataTable();
        data.addColumn('number', 'x');
        data.addColumn('number', 'y');
        data.addRows(numPoints);
        var step = (xmax-xmin) / (numPoints-1);
        for(var i = 0; i < numPoints; i++)
        {
          var x = xmin + step * i;
          data.setValue(i,0,x);
          with(Math) {
            var y = eval(equation);
          }
          data.setValue(i,1,y);
        }
        document.getElementById("chart_div").innerHTML = "";
        var chart = new google.visualization.ScatterChart(
            document.getElementById('chart_div'));
        chart.draw(data, {width: 600, height: 400, titleX: 'X',
            titleY: 'Y', legend: 'none', pointSize: pointSize});
      }
    </script>
  </head>

  <body>
      equation: &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;
      <input id="txteq" type="text" value="-sin(2*x)" />
      <br />
      minimum value(x): &nbsp;<input id="txtmin" type="text" value="-3.14" />
      <br />
      maximum value(x): &nbsp;<input id="txtmax" type="text" value="3.14"/>
      <br />
      Precision (number of points): &nbsp;<input id="precision" type="text" value="1000"/>
      <br />
      Point size: &nbsp; <input id="pointSize" type="text" value="2"/>
      <br />
      <input id="Button1" type="button" value="Draw Graph"
          onclick="javascript:drawChart(
              document.getElementById('txteq').value,
              parseFloat(document.getElementById('txtmin').value, 10),
              parseFloat(document.getElementById('txtmax').value, 10),
              parseInt(document.getElementById('precision').value, 10),
              parseInt(document.getElementById('pointSize').value, 10))" />

    <div id="chart_div"></div>
  </body>
</html>

We thank Steve for the inspiration and would love to see more creative uses of the platform from you.

The Visualization Team


2013, By: Seo Master