This is a really interesting slide deck (63 page PDF) on some topics in data visualization. It breaks roughly into three parts. The first is a survey of data visualization techniques, with a focus on different visualization tools or elements. The second focuses on colour ("The first rule of colour: don't talk about colour.") The third looks at the use of 3D data visualizations (general rule: don't use 3D data visualizations). Not to be missed by anyone working in big data or human-computer interaction. Related: Bad design of everyday things. Also related: data journalism in broadcast news and video.
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