From 45d7e21336f0958ce66260f4e76c44ffcb273ec1 Mon Sep 17 00:00:00 2001
From: Jacob Wilkins <jacob.wilkins@stfc.ac.uk>
Date: Fri, 11 Oct 2024 15:44:57 +0100
Subject: [PATCH] Switch to fftfreq

---
 janus_core/processing/post_process.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/janus_core/processing/post_process.py b/janus_core/processing/post_process.py
index 421a61da..ac5c0971 100644
--- a/janus_core/processing/post_process.py
+++ b/janus_core/processing/post_process.py
@@ -1,5 +1,5 @@
 """Module for post-processing trajectories."""
-
+1;4000;35c
 from collections.abc import Sequence
 from itertools import combinations_with_replacement
 from typing import Optional, Union
@@ -278,7 +278,7 @@ def compute_vaf(
 
     if fft:
         vafs = np.fft.fft(vafs, axis=0)
-        lags = 1. / lags
+        lags = np.fft.fftfreq(nsteps, time_step)
 
     vafs = (
         lags,