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-rw-r--r--fietsboek/transformers/elevation.py3
1 files changed, 2 insertions, 1 deletions
diff --git a/fietsboek/transformers/elevation.py b/fietsboek/transformers/elevation.py
index c0f999f..6bdcbb4 100644
--- a/fietsboek/transformers/elevation.py
+++ b/fietsboek/transformers/elevation.py
@@ -188,7 +188,8 @@ class SmoothElevation(Transformer):
def execute(self, path: geo.Path):
radius = self._estimate_window_size(path)
LOGGER.debug("Savitzky-Golay radius: %s", radius)
- self._savitzky_golay(path, radius)
+ if radius:
+ self._savitzky_golay(path, radius)
def _estimate_window_size(self, path: geo.Path) -> int:
length = 0.0