Setting up an OpenStack cloud

My notes from setting up a multi-node OpenStack Folsom deployment on Ubuntu 12.04 x64 servers. I initially tried to use Dodai-deploy, but in the end reverted to a manual installation for more configuration options. More on my experiences in this presentation (video recording in Croatian).

Source: Precise Folsom Install

Fine-looking R plots

While strolling through a friend’s copy of The Economist today, admiring a very coherent visual identity they chose, I remembered reading this blog post about R having such a theme a while back.

Lead by curiosity, I gave it a try.

Blue makes for a soothing colour to present such shocking data, don’t you think?

Quick instructions… Continue reading Fine-looking R plots

TweetDeck as an Ubuntu app

Want a nice GUI to read through your Twitter (and Facebook) feeds in Ubuntu?

While the official TweetDeck site doesn’t offer a native client and it is not possible to install it on top of Adobe Air anymore (since it’s been dropped), it is possible to get TweetDeck as a wrapped web app in Ubuntu – through Chromium’s “create application shortcuts”.

TweetDeck in Ubuntu – multiple columns show various feeds.

Continue reading TweetDeck as an Ubuntu app

Ubuntu creative suite

Doing some web design these days, I find that Ubuntu offers a really mature stack to tackle the job with powerful applications and good OS integration. Drag’n’drop a wide spectrum of objects between applications to avoid having to browse through your files, multiple desktops to reduce window chaos and the do-one-thing-but-do-it-right philosophy stemming from the terminal era and general speed are some of the advantages that you notice quite quickly as really helpful. I’ll shortly cover some of the apps I use and their best features.

For the initial concept forming I use:

  • Shotwell – great for importing & organizing “inspiration” photographs; tags and grades really help a lot and it’s cool to be able to quickly colour-balance, straighten and crop photos
  • Nautilus – with its multiple tabs, split windows and drag’n’dropability of files, folders, & bread crumbs, it is an essential helper throughout the whole process (the dash is also a good sidekick with quick search capabilities for far-away files and apps)
  • Gpick – creating colour systems by picking colours from photographs, pdfs, extending them through colour harmony rules, ctrl+c-ing hex values to your clippboard or dragging colours or importing full profiles to Inkscape or GIMP… a tad unstable, but powerful as hell!

Continue reading Ubuntu creative suite

Python notebook

As I went searching for an RStudio equivalent for Python I discovered IPython notebook, which I shortly described in this Stack Overflow answer:

IPython has a really cool sub-project called IPython notebook. It basically allows you to interactively code and document what you’re doing in one interface and later on export it as a notebook or script or print it as static html (and therefore pdf as well).

IPython notebook screenshot

It starts a web application locally and you use it from your browser.

There’s also a Qt console for IPython, a similar project with inline plots, which is a desktop application.