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* doublenull: drop unused importAnton Khirnov2024-01-23
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* doublenull: add a function for inverse double-null coordinatesAnton Khirnov2024-01-23
| | | | I.e. computing T/X(U, V).
* doublenull: null_coordinates(): do not extrapolateAnton Khirnov2024-01-23
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* doublenull: split off integration into a separate functionAnton Khirnov2024-01-15
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* doublenull: returns solutions as OdeSolution rather than X(t) arrayAnton Khirnov2024-01-15
| | | | | Similar to what is done in null, allows working with results more conveniently.
* doublenull: allow passing gXt=None to null_curves()Anton Khirnov2024-01-08
| | | | Treated as zero.
* doublenull: use interp.py for 2D interpolationAnton Khirnov2024-01-08
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* doublenull: shorten namesAnton Khirnov2023-06-28
| | | | Breaks compatibility.
* doublenull: add a new null curve tracking modeAnton Khirnov2023-06-28
| | | | | Trace from the spatial origin and each time point backwards and forwards in time.
* doublenull: import functions from interpolate explicitlyAnton Khirnov2023-06-28
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* doublenull: add unit testsAnton Khirnov2023-06-28
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* doublenull: add a parameter for integrating backwards in timeAnton Khirnov2022-09-24
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* doublenull: switch from odeint to newer solve_ivpAnton Khirnov2022-08-15
| | | | Use its events feature to terminate integration on grid boundaries.
* Add code for double-null coordinates.Anton Khirnov2018-03-22