swiftest.io.select_active_from_frame

swiftest.io.select_active_from_frame#

swiftest.io.select_active_from_frame(ds, param, framenum=-1)[source]#

Selects a particular frame from a DataSet and returns only the active particles in that frame.

Parameters:

  • ds (SwiftestDataset) – Dataset containing Swiftest n-body data

  • param (dict) – Swiftest input parameters. This method uses the names of the cb, pl, and tp files from the input

  • framenum (int, default=-1) – Time frame to extract. If this argument is not passed, the default is to use the last frame in the dataset.

Returns:

xarray dataset – Dataset containing only the active particles at frame, framenum

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