From ace7c1b9abe6fe2e73a06c81ade93b6abf28bae6 Mon Sep 17 00:00:00 2001
From: John Halley Gotway <johnhg@ucar.edu>
Date: Mon, 7 Oct 2024 16:26:17 +0000
Subject: [PATCH] Per #2887, reset Npairs = 0 for ContingencyTable::zero_out()

---
 src/libcode/vx_statistics/contable.cc | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/libcode/vx_statistics/contable.cc b/src/libcode/vx_statistics/contable.cc
index 5bb40afcd..9fd8dcfae 100644
--- a/src/libcode/vx_statistics/contable.cc
+++ b/src/libcode/vx_statistics/contable.cc
@@ -123,6 +123,7 @@ void ContingencyTable::assign(const ContingencyTable & t) {
 void ContingencyTable::zero_out() {
 
    fill(E.begin(), E.end(), 0.0);
+   Npairs = 0;
 
    return;
 }