From 286836a8e5415918b232c51166add8250fdb14c8 Mon Sep 17 00:00:00 2001
From: Helge <47348963+HJZollner@users.noreply.github.com>
Date: Thu, 12 Jan 2023 16:39:19 -0500
Subject: [PATCH] [BUG FIX] - SpectroFrequency nii-mrs header extension issue -
 io_writeniimrs - Helge

- Added an additional line to io_writeniimrs that converts the SpectrometerFrequency entry into a cell array. This will result in an array of numbers for the json encoded header extension. The file is afterward readable in FSLeyes (and Osprey).
---
 libraries/FID-A/inputOutput/io_writeniimrs.m | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libraries/FID-A/inputOutput/io_writeniimrs.m b/libraries/FID-A/inputOutput/io_writeniimrs.m
index bb1f345b..6d4d7f5e 100644
--- a/libraries/FID-A/inputOutput/io_writeniimrs.m
+++ b/libraries/FID-A/inputOutput/io_writeniimrs.m
@@ -159,6 +159,10 @@
     in.nii_mrs.hdr_ext.(sprintf('dim_%i',JJ+4)) = dimname{JJ};
 end
 
+if ~iscell(in.nii_mrs.hdr_ext.SpectrometerFrequency)
+    in.nii_mrs.hdr_ext.SpectrometerFrequency = {in.nii_mrs.hdr_ext.SpectrometerFrequency};
+end
+
 nii.ext.ecode = 44;
 nii.ext.edata_decoded = jsonencode(in.nii_mrs.hdr_ext);
 len = int32(numel(nii.ext.edata_decoded));