From bef0a46535a68d2085ee33acb27812222369ea64 Mon Sep 17 00:00:00 2001
From: Ben Dichter <ben.dichter@gmail.com>
Date: Fri, 18 Jan 2019 17:12:20 +0200
Subject: [PATCH] reference_frame optional

---
 src/pynwb/data/nwb.ophys.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/pynwb/data/nwb.ophys.yaml b/src/pynwb/data/nwb.ophys.yaml
index dc208f001..206376261 100644
--- a/src/pynwb/data/nwb.ophys.yaml
+++ b/src/pynwb/data/nwb.ophys.yaml
@@ -265,6 +265,7 @@ groups:
       or vectors needed to rotate to common anotomical axis (eg, AP/DV/ML). COMMENT:
       This field is necessary to interpret manifold. If manifold is not present then
       this field is not required'
+    quantity: '?'
   groups:
   - neurodata_type_def: OpticalChannel
     neurodata_type_inc: NWBContainer