Archive for the ‘software’ Category

Neighbourhoods and crisis

Friday, February 28th, 2014

Barris i Crisi means neighbourhoods and crisis in Catalan and is an university project which tries to answer two main aims: Analyse the impact of the crisis on social and spatial inequalities in Catalonian municipalities and their effects on the most disadvantaged neighbourhoods. And secondly, identify responses to this situation by the own neighbourhoods and understand the elements which contribute to the resilience of the communities to the crisis.

barrisicrisi

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Linz Pflückt jetzt auch als Firefox OS WebApp

Sunday, October 27th, 2013

marketplaceNachdem mir Mozilla freundlicherweise ein Geekphone zugeschickt hat kann ich nun meinem Versprechen nachkommen, Linz Pflückt auf Firefox OS zu portieren. Daher gibts jetzt unser Projekt zur Darstellung aller Obstbäume der Stadt Linz im Mozilla Marketplace von wo es auf Handys mit Firefox OS – aber auch lokal am Desktop als Webapp (ab Firefox 16) – installiert werden kann.

Portieren hört sich nach viel mehr Arbeit an als das Anpassen einer Webanwendung an das neue Betriebssystem von Mozilla eigentlich ist. Ist die Webapplikation responsive konzipiert, besteht der Prozess nur im Schreiben einer Manifest-Datei. (more…)

Pre-populate WordPress posts

Sunday, September 15th, 2013

This post is about how to pre-fill some fields when opening the Add new posts form (/wp-admin/post-new.php). It’s straight forward for some fields like title and post type but more difficult for other fields. Actually there is no central resource for this and meanwhile I’m still thinking where to include it on WordPress codex, I started to document it here. (more…)

Linz pflückt: Fruits for free

Sunday, May 26th, 2013

simple_leaf_xxhdpiLinz Pflückt shows more than 2000 public fruit trees in the city of Linz. The basic data comes from the open data portal which was launched as part of the Open Commons Region Linz. The dataset contains information on species, genus, tree height, etc. which we extended with information such as maturity and fruit category.

The fruits of the trees are freely available public domain, which may be picked and eaten by every person! Look at the trees and enjoy the taste of the fruits!

You as fruit fan are invited to evaluate the fruits, comment on the trees and to enrich them with photos. With your submissions, the project is gaining usability and usefulness.

Linz Pflückt is also available as app for Android devices. Owners of other phones can use the mobile version of the website.

The project was built using free software frameworks as OpenStreetMaps, leafletjs and WordPress.

Processing Ring Chart

Friday, August 10th, 2012

I was always a big fan of Ring Charts, also known as Multi-level Pie Charts or Radial Treemap, specially the Baobap disk allocation program for Linux, developed by Igalia. Now I want to start to use them for other kind of visualizations as an alternative to treemaps. I didn’t find any implementation in Javascript so I started to develop one on my own using Processing and it’s Processing.js exporter. The design of the classes was inspired by this Java Ring Chart implementation.

Some characteristics of this class: It’s size and the thickness of the rings adapt dynamically to the container. The rings can start and end at any angle. The segments of each ring are divided proportionally based on the segments value and drawn to the proper arc length based on the start and end angle.

You can download the sources at OpenProcessing, what follows is a description of the classes ArcSegment, Ring and RingChart.

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La Bona Vida està en joc…

Monday, April 16th, 2012

Bajo este título desarrollamos para el Museu de la Ciència i de la Tècnica de Catalunys un proyecto online sobre ciudad y sostenibilidad. En la web labonavida.cat encontrarás mucha información acerca de ámbitos temáticos como Energía, Consumo, Agua y Mobilidad.

El nuclea del proyecto son cuatro juegos online conectados por un metajuego. Hoy lanzamos el primer juego, Shine-City, donde tienes que crear la red energética para alimentar una ciudad con suficiente energía. Cada semana sumamos un juego, el próximo lunes Fast-food, después Recicletris y cerramos con Sokollapso.

¡A jugar!

del Microcosmos a Gaia, HTML5

Monday, April 16th, 2012

Bajo este nombre críptico habrá un taller en el Festival Internacional de la Imagen en Manizales/Colombia. El taller tiene como objetico familiarizar a los participantes en la programación JavaScript/HTML5 utilizando los ejemplos “De Gaia al microcosmos” como base práctica. La primera parte del taller será una introducción práctica al elemento Canvas de HTML5 y a las capacidades y particularidades de Processing para la programación web. En la segunda parte se formaran grupos de los cuales cada uno analizará uno de los 7 ejemplos de GAIA o uno de sus componentes comunes.

El proyecto “De Gaia al microcosmos” busca transformar, actualizar y localizar culturalmente materiales educativos desarrollados por Lynn Margulis mostrando interrelaciones biológicas y geológicas que ocurren desde el universo molecular al universo cósmico. Ha sido iniciado en el 2005 por Lynn Margulis, Santiago Ortiz y  Luis Rico.

Como siempre podrás encontrar los apuntes del taller en mi wiki educativo.

Some notes on difficult to debug Processing.js errors

Sunday, February 26th, 2012

Recently I converted some Processing sketches to Processing.js using Processing 2.0a4 Pre-Release with integrated Javascript mode. In resume it’s quite straight forward, they did a great job. But I had some troubles with code that works fine in Processing but not when exported to Javascript.

Sometimes it’s quite hard to detect errors yet the applet gets exported without error messages and shows up in the browser as an empty canvas. It’s recommended to use Firebug and Chrome javascript console Javascript console in parrallel as sometimes one gives a better description than the other. But sometimes none of them shows an error so it’s quite impossible to debug the sketches. (more…)