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Refactor State class
#61
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Inspired by the work done in scipy.signal.ltisys by Felix Berkenkamp
The conversion is made transitive and non singular through the use of semilatus rectum instead of semimajor axis, see poliastro#62. The case of polar inclination is still pending.
Using semilatus rectum instead of semimajor axis improves stability of the algorithms. Also, it helps making conversion transitive. Closes poliastro#62.
Some pending issues: * Name clash between specific angular momentum and fourth mee. * Conversion between rv and mee. * Tests pending, did not find numerical examples. * Split code into files? state.py is already over 500 lines.
h still can be calculated using the norm of h_vec, while I avoid a name clash.
Also added dummy conversion functions.
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There are some conversion functions missing but I will leave it as it is now. Lack of numerical examples to provide tests don't motivate me to add them, I will leave an issue open about it. This will probably mean a decrease in coverage. |
astrojuanlu
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Jul 3, 2015
Refactor `State` class, added modified equinoctial elements, closes #17.
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This allows for adding new representations in an easier way (see #17).