ChaosGameRepresentationCalculator.php
Chaos Game Representation of a DNA sequence Freely inspired by BioPHP's project biophp.org Created 9 October 2026 Last modified 9 October 2026
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Classes
- ChaosGameRepresentationCalculator
- Migrated from biotools' ChaosGameRepresentationManager, whose computation was tangled with the drawing of the images. The chaos game (Jeffrey, 1990) starts at the centre of a unit square whose corners stand for the bases ; each base moves the point half-way to its corner. The corners are biotools', y growing downward as in an image : C top left (0, 0), G top right (1, 0), A bottom left (0, 1), T bottom right (1, 1). A symbol other than A, C, G or T moves nothing and leaves no point.