From 4737947aa83bc094b14e9b15bb87d862e595e999 Mon Sep 17 00:00:00 2001
From: Lanqing Yuan <yuanlq@uchicago.edu>
Date: Sun, 17 Dec 2023 18:22:46 -0600
Subject: [PATCH] plot_wf debug

---
 saltax/match/visual.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/saltax/match/visual.py b/saltax/match/visual.py
index 04ceb1d..cbadbf1 100644
--- a/saltax/match/visual.py
+++ b/saltax/match/visual.py
@@ -1,4 +1,5 @@
 import matplotlib.pyplot as plt
+import numpy as np
 
 def plot_wf(ind, st_salt, st_simu, st_data, runid, matched_simu, 
             event_ext_window_ns=2.4e6,