Only two articles this month:
– great review if different categories of data analysis and visualization tools. The tools I haven’t known (i.e. excluding R, Google Charts etc.) and found them especially interesting:
Data web apps: Google Refine (data cleansing in a spreadsheet-like UI: clustering, data distribution overview, …), Google Fusion Tables (data => map etc., beta), Impure (rich & interactive data visualization via a drag-and-drop UI reminiscent of Yahoo Pipes; cons: lacking documentation, steep learning curve, check the teaser video).
GIS: OpenHeatMap (webapp, “astonishingly easy to create a color-coded map from many types of location data”)
Other: Timelines with TimeFlow (interesting desktop /java/ app x alpha) or SIMILE Timeline widget (JS); Word clouds: IBM Word-Cloud Generator (free, desktop /java/); Gephi (graph/network visualization & exploration; desktop)
– an entertaining and enlightening article with valuable links to resources that can help you get to the next evolutionary step, one of its benefits is that it helps to understand the true value of the different types of tests (some -> TDD -> Behaviour Driven Development (‘what’ rather than ‘how’) -> Acceptance Test Driven Development) and the shift from a technical to a business perspective along the line