collapse measurementList according to JSNIRF spec

Author: fangq

aos2soa.m

@@ -0,0 +1,40 @@
+function st=aos2soa(starray)
+%
+%    st=aos2soa(starray)
+%
+%    Convert an array-of-structs (AoS) to a struct-of-arrays (SoA)
+%
+%    author: Qianqian Fang (q.fang <at> neu.edu)
+%
+%    input:
+%        starray: a struct array, with each subfield a simple scalar
+%
+%    output:
+%        str: a struct, containing the same number of subfields as starray
+%             with each subfield a horizontal-concatenation of the struct
+%             array subfield values.
+%
+%    example:
+%        a=struct('a',1,'b','0','c',[1,3]');
+%        st=aos2soa(repmat(a,1,10))
+%
+%    this file is part of JSNIRF specification: https://github.com/fangq/jsnirf
+%
+%    License: GPLv3 or Apache 2.0, see https://github.com/fangq/jsnirf for details
+%
+
+
+if(nargin<1 || ~isstruct(starray))
+    error('you must give an array of struct');
+end
+
+if(numel(starray)==1)
+    st=starray;
+    return;
+end
+
+st=struct;
+fn=fieldnames(starray);
+for i=1:length(fn)
+    st.(fn{i})=[starray(:).(fn{i})];
+end

snirfdecode.m

@@ -47,6 +47,9 @@
 
 if(issnirf==0 && isfield(data,'nirs') && isfield(data,'formatVersion') && ~isfield(data,'SNIRFData'))
     data.SNIRFData=data.nirs;
+    if(isfield(data.SNIRFData,'data') && isfield(data.SNIRFData.data,'measurementList'))
+        data.SNIRFData.data.measurementList=aos2soa(data.nirs.data.measurementList);
+    end
     if(iscell(data.nirs))
         for i=1:length(data.nirs)
             data.SNIRFData{i}.formatVersion=data.formatVersion;