From d57ff373345fea1bdfd5f23c752e468b909b4744 Mon Sep 17 00:00:00 2001
From: "Patrick J. Roddy" <patrickjamesroddy@gmail.com>
Date: Tue, 18 Jun 2024 12:34:22 +0100
Subject: [PATCH] Fix linting (#392)

---
 src/sleplet/plot_methods.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/sleplet/plot_methods.py b/src/sleplet/plot_methods.py
index 661f7927..1ee68ac9 100644
--- a/src/sleplet/plot_methods.py
+++ b/src/sleplet/plot_methods.py
@@ -174,7 +174,7 @@ def _normalise_function(
         # if all 0, set to 0
         return f + 0.5
     # if all non-zero, set to 1 otherwise scale from [0, 1]
-    return f / f.max() if np.allclose(f, f.max()) else (f - f.min()) / f.ptp()
+    return f / f.max() if np.allclose(f, f.max()) else (f - f.min()) / np.ptp(f)
 
 
 def _boost_field(  # noqa: PLR0913