From 9803d54a568b9c3b140594953c84abb9ce9565b0 Mon Sep 17 00:00:00 2001
From: Viktor VN <vannieuwenhuize.viktor@gmail.com>
Date: Tue, 20 Aug 2024 10:23:19 +0200
Subject: [PATCH] Small optimisation in excprob function (#424)

Co-authored-by: vikvnieu <viktor.vannieuwenhuize@ugent.be>
---
 pysteps/postprocessing/ensemblestats.py | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/pysteps/postprocessing/ensemblestats.py b/pysteps/postprocessing/ensemblestats.py
index 54d90aaeb..351ec4a31 100644
--- a/pysteps/postprocessing/ensemblestats.py
+++ b/pysteps/postprocessing/ensemblestats.py
@@ -99,10 +99,9 @@ def excprob(X, X_thr, ignore_nan=False):
         scalar_thr = False
 
     for x in X_thr:
-        X_ = X.copy()
+        X_ = np.zeros(X.shape)
 
         X_[X >= x] = 1.0
-        X_[X < x] = 0.0
         X_[~np.isfinite(X)] = np.nan
 
         if ignore_nan: