Avoid multiply the array by a scalar once rather than twice. It makes the...

Avoid multiply the array by a scalar once rather than twice. It makes the computation quite a bit faster.

pcigale/analysis_modules/pdf_analysis/utils.py

@@ -302,8 +302,8 @@ def _compute_scaling(model_fluxes, obs_fluxes, obs_errors):
     denom = np.zeros(model_fluxes.shape[0])
     for i in range(obs_fluxes.size):
         if np.isfinite(obs_fluxes[i]):
-            num += (model_fluxes[:, i] * obs_fluxes[i] /
-                    (obs_errors[i] * obs_errors[i]))
+            num += model_fluxes[:, i] * (obs_fluxes[i] / (obs_errors[i] *
+                                                          obs_errors[i]))
             denom += np.square(model_fluxes[:, i] / obs_errors[i])
 
     return num/denom