concatenate_none¶

tiatoolbox . models . engine . semantic_segmentor . concatenate_none

concatenate_none(old_arr, new_arr)[source]¶

Concatenate arrays, handling None values gracefully.

This utility function concatenates new_arr to old_arr along the first axis. If old_arr is None, it returns new_arr directly. Supports both NumPy and Dask arrays.

Parameters:

old_arr (np.ndarray | da.Array | None) – Existing array to append to. Can be None.
new_arr (np.ndarray | da.Array) – New array to append.

Returns:

Concatenated array of the same type as new_arr.

Return type:

np.ndarray | da.Array