René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"processBIDS for MEG","articleBody":"Hi\r\n\r\nI was trying to add an option to autoidentify BIDS meg data, to support:\r\n```\r\naap.directory_conventions.rawdatadir = 'BIDSDir';\r\naap = aas_processBIDS(aap); \r\n```\r\n\r\nMy approach so far was to define `megimages` (i.e. meg filepaths from `spm_select()`) in `aa_engine/aas_processBIDS.m`:  [Branch here](https://github.com/ethanknights/automaticanalysis/commit/d55358d9a5bcce80bec25e19f877de8f3e03ef01) \r\nNote this is very basic (i.e. I'm not trying to add events, skip/order series etc).\r\n\r\nBut I get the impression I am going about this the wrong way - `megimages` etc. are used as input to aap = aas_addsubject():\r\n\r\n```\r\nif toAddData\r\n    aap = aas_addsubject(aap,subjname,mriname,...\r\n        'structural',structuralimages,...\r\n        'functional',functionalimages,...\r\n        'fieldmaps',fieldmapimages,...\r\n        'diffusion',diffusionimages,...\r\n        'specialseries',specialimages,...\r\n        'meg',megimages); \r\nend\r\n```\r\n\r\n`aas_addsubject.m` expects MEG data in a [1x2 cell array](https://github.com/automaticanalysis/automaticanalysis/blob/master/aa_engine/aas_addsubject.m#L155) (ie. mri and meg filenames).\r\nWhereas input to aas_addsubject.m from processBIDS.m is a larger cell array whose number of columns is determined by all potential modalities e.g.: \r\n```\r\nvarargin =\r\n  1×12 cell array\r\n  Columns 1 through 4\r\n    {'structural'}    {0×0 cell}    {'functional'}    {0×0 cell}\r\n  Columns 5 through 8\r\n    {'fieldmaps'}    {0×0 cell}    {'diffusion'}    {0×0 cell}\r\n  Columns 9 through 12\r\n    {'specialseries'}    {0×0 cell}    {'meg'}    {1×1 cell}\r\n\t). \r\n```\r\n\r\nI guess I could make an ugly solution (e.g. if the meg filename cell ~isempty, then read those filenames for meg data) but that's not ideal.\r\n\r\nI'll look again later, but wanted to ask if anyone could steer me at all? \r\n","author":{"url":"https://github.com/ethanknights","@type":"Person","name":"ethanknights"},"datePublished":"2021-02-25T15:23:23.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/231/automaticanalysis/issues/231"}