Raleigh plot
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Raleigh plots, or Rayleigh plots (also called circlegrams, since they are closely related to circular histograms, phasor diagrams, and wind roses ), are statistical graphics that serve as graphical representations for a Raleigh test that map a mean vector to a circular plot. Raleigh plots have many applications in the field of chronobiology, such as in studying butterfly migration patterns or protein and gene expression, and in other fields such as geology, cognitive psychology, and physics.
Raleigh plots, or Rayleigh plots (also called circlegrams, since they are closely related to circular histograms, phasor diagrams, and wind roses ), are statistical graphics that serve as graphical representations for a Raleigh test that map a mean vector to a circular plot. Raleigh plots have many applications in the field of chronobiology, such as in studying butterfly migration patterns or protein and gene expression, and in other fields such as geology, cognitive psychology, and physics. ===Examples=== The example to the left is a Raleigh plot that has a high r value. Blue and yellow dots indicate individuals from different groups being tested, and the position of the dots indicate in which angle from magnetic north each tested individual is traveling. Due to the high overall concentration of individuals going at an angle between zero degrees and ninety degrees, the mean vector is much longer. Compare the figure to the left with the figure below: In this second example (to the right), the Raleigh plot has a low r value. Both yellow and blue dots are spread along the circumference of the circle, indicating that many individuals are traveling at different angles. The largest cluster of individuals, a group traveling between 180 degrees and 270 degrees, causes the mean vector to be pointed at an angle in that direction. Notably, due to the variability in the direction within this group, the mean vector is much smaller.
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