From b8c3d9d74f47f596589b83da5a2ab211ec029f02 Mon Sep 17 00:00:00 2001
From: Daniel Schadt <kingdread@gmx.de>
Date: Thu, 15 Oct 2026 17:40:33 +0200
Subject: bound savgol radius to half the track length

---
 fietsboek/transformers/elevation.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fietsboek/transformers/elevation.py b/fietsboek/transformers/elevation.py
index 67d3ecf..ad44340 100644
--- a/fietsboek/transformers/elevation.py
+++ b/fietsboek/transformers/elevation.py
@@ -220,6 +220,7 @@ class SmoothElevation(Transformer):
 
     def execute(self, path: geo.Path):
         radius = self._estimate_window_size(path)
+        radius = min(radius, int(len(path.points) / 2))
         LOGGER.debug("Savitzky-Golay radius: %s", radius)
         if radius:
             self._savitzky_golay(path, radius)
-- 
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