d77d4a471a1ad924ed94275c00d96544f70a5889,dipy/sims/tests/test_phantom.py,,test_snr,#,73

Before Change

                                    snr=snr)

        noise = vol - vol_w_noise
        rms_noise = np.sqrt(np.mean(noise**2))
        snr_est = mean_sig/rms_noise
        assert_array_almost_equal(snr_est, snr, decimal=3)

After Change

        
        noise = vol - vol_w_noise

        s = np.mean(vol, -1)
        n = np.std(noise, -1)
        snr_est = s/n        
        assert_array_almost_equal(np.mean(snr_est[np.isfinite(snr_est)]),
                                  snr, decimal=0)

Instances