From 94f66e081667945f8e91bd5b77609bd265883087 Mon Sep 17 00:00:00 2001
From: Michael Krayer <michael.krayer@posteo.de>
Date: Tue, 25 May 2021 18:46:19 +0200
Subject: [PATCH] require period explicitly

---
 field.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/field.py b/field.py
index 4bb27ef..36aa591 100644
--- a/field.py
+++ b/field.py
@@ -1,6 +1,6 @@
 import numpy
 class Field3d:
-    def __init__(self,data,origin,spacing,period=(None,None,None)):
+    def __init__(self,data,origin,spacing,bounds,period):
         assert len(origin)==3,  "'origin' must be of length 3"
         assert len(spacing)==3, "'spacing' must be of length 3"
         assert len(period)==3,  "'period' must be of length 3"