Juan Elosua

La Nación, OpenNews

Spanish telecommunications engineer. 2015 Knight-Mozilla fellow at @LNdata. Data Analysis & Visualization Developer. Open Data enthusiast.

Submit profile updates or corrections

Juan’s work on Source


  1. How NPR Transcribes and Fact-Checks the Debates, Live
  2. How La Nación Listened to 20,000 (Possibly Interesting) Audio Files
  3. Opening Up Doc2Media
  4. Draw Your Own Election Adventure
  5. Fellows + Code Convening = New Open Source Tools

Articles by Juan

  1. How La Nación Listened to 20,000 (Possibly Interesting) Audio Files

    We used machine learning to quickly identify audio files that might be relevant voicemails.

    Posted on

    With about 20,000 unlabeled audio files to classify, as part of a big breaking story, we created a process to help us focus on the files we actually needed.

  2. Just One Thing: A Year in Review, Part I

    Appreciation of usefulness and bar-raising at the end of a long, complicated year

    Posted on

    As we did last year, we’ve asked a couple of dozen people from all around the news-nerd community to tell us about one thing—article, feature, app, tool, or something else entirely—that they loved in 2015. This week, we’re publishing their responses, from interactives to project management software. We hope you find here at least one thing that eases your work, inspires new angles on your stories, and helps carry you through to 2016.

  3. Opening Up Doc2Media

    La Nación’s project at the 2015 Portland code convening

    Posted on

    Earlier this year at La Nación, we developed Doc2Media, an app that adds media resources to documents hosted on DocumentCloud. We created it to visualize hearings from a famous trial led by Alberto Nisman, a prosecutor who died in unclear circumstances hours before testifying against the Argentinian president. After we finished the project, we wanted to extend its functionality and abstract it to a tool that can be used in other projects as well as by other newsrooms.

  4. Draw Your Own Election Adventure

    Using the Leaflet Draw Plugin to Give Users Control Over Election Results Display

    Posted on

    At La Nación, we have been working on real-time coverage of Buenos Aires elections, as well as a more detailed view results once we get data for each polling station. In this post, we’ll to explain our mapping-app innovation that allows readers to choose what parts of the city they are interested in by drawing shapes over a basemap, and then returns custom results for their selected area.

Current page