fix 1206 (#1257)

Author: Remi-Gau

src/IO/getData.m

@@ -60,7 +60,12 @@
     indexDependencies = false;
   end
 
-  if isfield(opt, 'taskName')
+  anatOnly = false;
+  if isfield(opt, 'anatOnly')
+    anatOnly = opt.anatOnly;
+  end
+
+  if ~anatOnly && isfield(opt, 'taskName')
     msg = sprintf('FOR TASK(s): %s', strjoin(opt.taskName, ' '));
     logger('INFO', msg, 'options', opt, 'filename', mfilename());
   end
@@ -72,6 +77,10 @@
     layout_filter = struct('sub', {opt.subjects});
   end
 
+  if anatOnly
+    layout_filter(1).modality = {'anat'};
+  end
+
   BIDS = bids.layout(bidsDir, ...
                      'use_schema', opt.useBidsSchema, ...
                      'verbose', opt.verbosity > 1, ...
@@ -100,7 +109,8 @@
   end
 
   % make sure that the required tasks exist in the data set
-  if isfield(opt, 'taskName') && ~any(ismember(opt.taskName, bids.query(BIDS, 'tasks')))
+  if ~anatOnly && isfield(opt, 'taskName') && ...
+          ~any(ismember(opt.taskName, bids.query(BIDS, 'tasks')))
 
     msg = sprintf(['The task %s that you have asked for ', ...
                    'does not exist in this dataset.\n', ...

tests/tests_bids/test_getData.m

@@ -45,3 +45,15 @@ function test_getData_get_also_raw_data_for_stats_pipeline()
   assert(~isempty(bids.query(BIDS.raw, 'data', 'suffix', 'events')));
 
 end
+
+function test_getData_anat_only()
+  % https://github.com/bids-standard/bids-matlab/issues/1206
+
+  opt = setOptions('vismotion');
+  opt.anatOnly = true;
+
+  [BIDS, ~] = getData(opt, opt.dir.input);
+
+  assert(isempty(bids.query(BIDS, 'data', 'modality', 'func')));
+
+end