cherab.imas.ids.radiation.load_radiation_emissivity¶

cherab.imas.ids.radiation.load_radiation_emissivity(radiation_ids, process_index: int | None = None, grid_subset_index: int = 5) → NDArray[float64]Source¶

Load emissivity values from a radiation IDS time slice.

Parameters:

radiation_ids¶

Radiation IDS object (top-level or time slice) obtained from DBEntry.

process_index: int | None = None¶

Index of the radiation process whose emissivity to load. If None (default), the total emissivity is read from the top-level ggd array of the IDS.

grid_subset_index: int = 5¶

grid_subset_index identifier of the grid subset to read, by default 5 ("Cells").

Returns:

NDArray[numpy.float64] – Emissivity values [W/m³] for each cell of the requested grid subset.

Raises:

RuntimeError – If the required AOS is empty or the requested subset cannot be found.