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===Visual perception and data visualization===
[[File:Grafana dashboard for MusicBrainz Hetzner Yamaoka server screenshot.webp|thumb|Example of data visualization ([[website monitoring]] for [[MusicBrainz]] wirh [[Grafana]]).]]
A human can distinguish differences in line length, shape, orientation, distances, and color (hue) readily without significant processing effort; these are referred to as "[[Pre-attentive processing|pre-attentive attributes]]". For example, it may require significant time and effort ("attentive processing") to identify the number of times the digit "5" appears in a series of numbers; but if that digit is different in size, orientation, or color, instances of the digit can be noted quickly through pre-attentive processing.<ref name="perceptualedge.com">{{cite web|url=http://www.perceptualedge.com/articles/ie/visual_perception.pdf|title=Steven Few-Tapping the Power of Visual Perception-September 2004|access-date=2014-10-08|archive-url=https://web.archive.org/web/20141005080935/http://www.perceptualedge.com/articles/ie/visual_perception.pdf|archive-date=2014-10-05|url-status=live}}</ref>
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