On 21 October 2017 at 21:03, Robert Kern <robert.k...@gmail.com> wrote:
> Index with a boolean mask. > > mask = (tmp_px > 2) > px = tmp_px[mask] > py = tmp_py[mask] > # ... etc. > > That isn't equivalent, note that j only increases when tmp_px > 2. I think you can do it with something like: mask = tmp_px > 2 j_values = np.cumsum(mask)[mask] i_values = np.arange(len(j_values)) px[i_values] = tmp_i[j_values]
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