From 464910903f9b75c11b2dfe0fa92e8a581ded6685 Mon Sep 17 00:00:00 2001
From: Matthias Wirth <matthias.wirth@gmail.com>
Date: Thu, 10 Feb 2022 15:27:00 +0100
Subject: [PATCH] don't show bogus geom_alt in labels when geom_alt not
 available

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

diff --git a/html/script.js b/html/script.js
index 9cc47d1..ce952a0 100644
--- a/html/script.js
+++ b/html/script.js
@@ -7363,6 +7363,9 @@ function loadEGM() {
 }
 function adjust_geom_alt(alt, pos) {
     if (geomUseEGM && egmLoaded) {
+        if (alt == null) {
+            return alt;
+        }
         return egm96.ellipsoidToEgm96(pos[1], pos[0], alt * 0.3048) / 0.3048;
     } else {
         return alt;