From 3195658975f91f73958b2d14791d995caa4b7eff Mon Sep 17 00:00:00 2001
From: Korbinian Eckstein <korbinian.eckstein@gmail.com>
Date: Fri, 29 Sep 2023 09:45:25 +1000
Subject: [PATCH] allow -1 in B0_dir

---
 src/tgv.jl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/tgv.jl b/src/tgv.jl
index f1c4dd9..082289d 100644
--- a/src/tgv.jl
+++ b/src/tgv.jl
@@ -123,7 +123,7 @@ end
 
 function set_parameters(alpha, res, B0_dir, cu)
     # If there are other values than 0 and 1 in B0 dir then print a warning
-    if !all(B0_dir[i] in [0, 1] for i in 1:3)
+    if !all(abs(B0_dir[i]) in [0, 1] for i in 1:3)
         @warn("Warning: works only for grid-aligned B0 directions at the moment, but it is B0_dir=$B0_dir")
     end