Recent Blog Posts

  • Infragistics will host a SQLSaturday Bulgaria for third consecutive time
    POSTED ON: 09/01/2014 7:19 AM  BY:  [Infragistics] Mihail Mateev
    For the third time in Bulgaria SQLSaturday will be held on 11 of October, 2014  at Infragistics Bulgaria office: 110 B, Simeonovsko Shosse Bul., Office Floors II and III, 1700 Sofia, Bulgaria. The event will be of interest to all specialists, using any version of SQL server and/or other Data / BI related technologies from Microsoft  - developers, administrators, analysts, managers. The conference is supported by Infragistics, Microsoft Bulgaria and all Microsoft user groups in this region. After the successful SQLSaturday #152 Bulgaria 2012 and  SQLSaturday #199 Bulgaria 2013 we are proud to announce that PASS entrusted Infragistics to host SQLSaturday #311 Bulgaria 2014   What is SQL Saturday: SQL Saturday is a conference of PASS (Professional Association for SQL Server) www.sqlpass.org,www.sqlsaturday.com The event was announced officially on PASS SQLSaturday site : The conference shall be held on Saturday of pre-selected location.   Some statistics about SQLSaturday Bulgaria 2014: 83 suggested topics ( 32 speakers from 17 countries ) 276 registrations until now   Our goals: Up to 400 registrations 250 to 300 attendees in place 5 tracks and up to 35 sessions The biggest event for Microsoft SQLServer, organized in Bulgaria and in the region     You can take a look a pictures from previous events below:   SQLSaturday #152 Bulgaria 2012   SQLSaturday #199 Bulgaria 2013            The conference will be interesting for those of you who wish to learn more about SQL Server,BI, Data Mining, Windows Azure,  Data Visualization , Open source Solutions with SQL Server and Microsoft Azure,  NoSQL databases and data visualization in the mentioned above areas.  You can register here. The number of registrations is limited The preliminary schedule will be announced around 10 of September on the schedule page. Sponsors who are interested in the event can register here. To see all news about SQLSaturday Bulgaria 2014  follow #SQLSatBulgaria on Twitter and SQLSaturday Bulgaria Facebook page . Follow news from Infragistics for more information about new Infragistics events. As always, you can follow us on Twitter @mihailmateev and @Infragistics and stay in touch on Facebook, Google+andLinkedIn! Warm Regards,SQLSaturday Bulgaria Team
  • User-Centered Data Visualization. Part 5 – From Wrong to Right
    POSTED ON: 08/29/2014 1:11 PM  BY:  Tobias Komischke
    Here’s a cool data viz story. A large weekly magazine in Europe has recently published some statistics about Ebola cases in four African countries. It’s in German, but bear with me here.   Per country, the outer bubble depicts the number of Ebola cases and the inner bubble shows how many of those have died. If you read the other parts of this blog series about user-centered data visualization, you’ll recall the reasons why using the size of bubbles to convey numbers is not a good idea. We’re just not wired to estimate and compare areas well. When I tried to replicate this visualization I found that the size of the inner bubbles (representing the number of people that died) is incorrect. They’re too large. But even without that, using the bubbles in bubbles leads to something that I find alarmist. You look at those bubbles and you see that the inner bubbles are almost the same size than the outer bubbles. Consequently, you get the sense that most people who got infected also died. Ebola is deadly and currently no vaccination is available to the public. However, based on just these numbers, it’s not the case that almost everybody has died. Here’s a visualization that shows the percentage of people who died vs. those who have not died. For the purists out there who hate pie charts, only look to the right! It shows that for the two countries on top (Liberia and Sierra Leone) most people have not died (sadly, I have to add “at the point of assessing the numbers”).   I wrote an email to the magazine who forwarded it to their graphic designers. After some praise for their magazine (which I’ve been reading for a long time) I provided them the reasons why bubble charts don’t work well, showed them the pie chart/bar chart above and humbly suggested to use pie or bar charts to show that kind of data. I didn’t hear back from them, but two issues later, they published an update on the situation for those four countries.   They did use bar charts and these convey the situation much better. It’s much easier to estimate the length of these bars than the size of the bubbles. I believe that people oftentimes shy away from using the classic and established chart types because they fear they look boring and non-sexy. From a viewpoint of a magazine with a circulation of 900,000 copies a week, I could understand that. Yet, they were open to make changes and looking at this new chart, I don’t think there’s an issue with attractiveness (probably should mention that the red, black and white are their three brand colors).  So let’s heal the world of data visualization one chart at a time! More importantly, let’s hope that an effective vaccination is made available to those who need it soon.
  • Presentation on AngularJS Tips and Tricks - Event Recap
    POSTED ON: 08/28/2014 1:38 PM  BY:  [Infragistics] Mihail Mateev
    Infragistics Friends group and jQuery Sofia with the help of Infragistics Inc.  organized a presentation on the following topic:  AngularJs Tips and Tricks . The event was held on Wednesday, August 27th, 2014 at Infragistics Bulgaria Office, 110B, Simeonovsko Shosse Bul., Sofia, Bulgaria.   Team  AngularJS Sofia do much to be done the first AngularJS event in this region. The event was of interest to all specialists, using JS / JavaScript frameworks – developers, visual designers, UX, managers. The meeting was supported by Infragistics Inc., Infragistics Friends and jQuery Sofia user groups . This was a presentation of  two parts for nearly two hours. First part was a deep dive into Angular’s injector object, explaining how dependency injection is working. In the second part, the lecturer shared tips and tricks that he learn by working with AngularJs for more than an year.   The speaker was Radoslav Stankov ( rstankov.com, github.com/rstankov, @rstankov ) . Radoslav is a web developer for more than a decade. He believes that frontend and backend are equally important. After several years working with Backbone.js, he is sure that AngularJs is the next big step in the evolution of web development.   Summary: There was 140 registrations + 39 people in the wait list. more than 100 attendees in place 2 hours presentation The first community event focused only on  AngularJS in Sofia.   Registration:   A minute before the start of the presentation   Radoslav is talking about Angular’s injector object   Tips and Tricks   Some guests…     It is time for demo:   More pictures from this event are available here.   You can find slides here: https://speakerdeck.com/rstankov/angular-tips-and-tricksCode samples are available in GitHub here: https://github.com/RStankov/talk-angular-tips-tricks   Follow this event and other JS related events on Twitter with hashtag #jssaturday. You can learn more about AngularJS event in Sofia if you follow us on Twitter @mihailmateev  and @Infragistics and stay in touch on Facebook, Google+, LinkedIn and Infragistics Friends User Group ! Warm Regards,Team  AngularJS Sofia