barak.utilities.indgroupby¶

barak.utilities.indgroupby(a, name)[source]¶

Find the indices giving rows in a that have common values for the field name.

Parameters :	a : structured array Find the indices for rows in this array. name : str Field of a.
Returns :	unique_vals, indices: : unique sorted values of a[name], and a list of indices into a giving the rows with each unique value.