orbdim in=orbit [parameter=value]
Other methods, such as SALI (see Manos & Athanassoula), exist.
orbdim needs a lot of data before the exponent can be reliably determined. In practice a 3 dimensional orbit is excluded from this analysis. It can be done with 2 dimensional orbits though.
Carnevali, P. and Santangelo, P., 1984. ApJ 281 473-476. Manos, T and Athanassoula, E. - Smaller Alignment Index (SALI) Carpintero, D.D. - arXiv:0805.2532v1 (2008) Maffione et al. - arXiv:1108.5481v1 (2011) - MEGNO (Mean Exponential Growth factor of Nearby Orbits) Zotos - arXiv:1209.1708 - the f-indictor as an indicator for chaos detection
pollux:/usr3/teuben/orbit authors original sources
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