From 16bfbcffdbfc9e76ae2e4b3faccbf02dda7d2efa Mon Sep 17 00:00:00 2001
From: "Martin J. Levy" <mahtin@users.noreply.github.com>
Date: Sat, 15 Aug 2020 13:17:43 -0700
Subject: [PATCH] Longstanding typo that caused incorrect tooltip display

---
 html/geo/geo.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/html/geo/geo.js b/html/geo/geo.js
index 6169ba6..066ce66 100644
--- a/html/geo/geo.js
+++ b/html/geo/geo.js
@@ -143,6 +143,9 @@ var Tooltip;
 
 function create_tooltop()
 {
+	if (Tooltip) {
+		return;
+	}
 	// create a tooltip
 	Tooltip = d3.select("#combined")
 		.append("span")