From e32eb7ab31fbc5f553c301208e7cdd12ad2bd08a Mon Sep 17 00:00:00 2001
From: JamesWrigley <james@puiterwijk.org>
Date: Tue, 24 Jan 2023 10:05:06 +0100
Subject: [PATCH] fixup! Add a method to get the detector centre with sub-pixel
 accuracy

---
 extra_geom/base.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/extra_geom/base.py b/extra_geom/base.py
index 2612627..e2e8f13 100644
--- a/extra_geom/base.py
+++ b/extra_geom/base.py
@@ -426,7 +426,7 @@ def centre(self, snapped=False):
 
         tile_corners = [t.corner_pos[:2] for t in
                         chain.from_iterable(self.modules)]
-        return np.abs(np.min(tile_corners, axis=0))[::-1] / self.pixel_size
+        return -np.min(tile_corners, axis=0)[::-1] / self.pixel_size
 
     @staticmethod
     def split_tiles(module_data):