add description SPM space and refactor

Author: Remi-Gau

.gitignore

@@ -2,8 +2,7 @@
 
 .vscode
 
-*.m~
-*octave-workspace
+*.json
 
 env/
 

src/spm_2_bids.m

@@ -139,10 +139,27 @@
 
     new_filename = bf.filename;
 
+    %% metadata
+    json = set_metadata(file, map, verbose, bf);
+
+end
+
+function json = set_metadata(file, map, verbose, bf)
+
     json = bids.derivatives_json(bf.filename);
 
-    json.content.RawSources = identify_rawsources(file, verbose);
-    json.content.Sources = identify_sources(file, map, verbose);
+    content = json.content;
+    content.RawSources = identify_rawsources(file, verbose);
+    content.Sources = identify_sources(file, map, verbose);
+
+    if isfield(bf.entities, 'space') && strcmp(bf.entities.space, 'IXI549Space')
+        content.SpatialReference  = struct('IXI549Space', ...
+                                           ['Reference space defined by the average ', ...
+                                            'of the ''549 subjects from the IXI dataset'' ', ...
+                                            'linearly transformed to ICBM MNI 452.']);
+    end
+
+    json.content = content;
 
 end
 

tests/test_spm_2_bids_metadata.m

@@ -21,7 +21,7 @@ function test_spm_2_bids_metadata_anat()
     assertEqual(json.content.Sources{2}, ...
                 'sub-01/sub-01_from-T1w_to-IXI549Space_mode-image_xfm.nii');
 
-    % bids.util.jsonencode(json.filename, json.content);
+    bids.util.jsonencode(json.filename, json.content);
 
 end
 
@@ -37,6 +37,6 @@ function test_spm_2_bids_metadata_func()
                 'sub-01/sub-01_task-foo_space-individual_desc-realignUnwarp_bold.nii');
     assertEqual(json.content.Sources{2}, 'TODO: add deformation field');
 
-    % bids.util.jsonencode(json.filename, json.content);
+    bids.util.jsonencode(json.filename, json.content);
 
 end