The Starfish Diagram: Visualising Data Within the Context of Survey Samples

• Main Author: Konstantopoulos, Iraklis S.
• Format: Report
• Language: unknown
• Published: arXiv 2014
• Subjects: Instrumentation and Methods for Astrophysics astro-ph.IM; Cosmology and Nongalactic Astrophysics astro-ph.CO; FOS Physical sciences; sami
• Online Access: https://dx.doi.org/10.48550/arxiv.1407.5619; https://arxiv.org/abs/1407.5619

As astronomy becomes increasingly invested in large surveys, the ample representation of an individual target becomes a significant challenge. Tabulations of basic properties can convey the message in an absolute sense, but not within the context of the sample from which the individual is drawn. We present a novel but simple plot that simultaneously visualises the properties of the sample and the individual. Numbers and characters are kept at an absolute minimum to enable the stacking of such plots without introducing too much verbal information. Once the user becomes accustomed to their appearance, a set of 'starfish diagrams' provide a direct representation of the individual within a sample, or between various samples. The utility and versatility of the plot is demonstrated through its application to astrophysical data and sports statistics. We provide a brief description of the concept and the source code, which is simple to adapt to any statistical dataset, be it descriptive of physics, demographics, finance, and more. : Submitted to Astronomy & Computing. Posted to arXiv ahead of acceptance to coincide with the early data release of the SAMI survey, in which the presented code features heavily. Code available from https://bitbucket.org/iraklis_k/starfish See also ascl.net/1407.001