error trying to use the function raw_to_bids

[romquentin]

Hi,
When using raw_to_bids to convert my CTF data:
raw_to_bids(subject_id='01', run='01', task='WM', raw_fname=raw_fname, events_fname=events_fname, output_path=output_path, event_id=event_id, overwrite=True)
I experienced this error:

TypeError                                 Traceback (most recent call last)
<ipython-input-84-1502beb8bad4> in <module>()
      2                     raw_fname=raw_fname, events_fname=events_fname,
      3                     output_path=output_path, event_id=event_id,
----> 4                     overwrite=True)

/Applications/anaconda/lib/python2.7/site-packages/mne_bids/bids_meg.pyc in raw_to_bids(subject_id, run, task, raw_fname, output_path, events_fname, event_id, hpi, electrode, hsp, config, overwrite, verbose)
    287 
    288     # save stuff
--> 289     _scans_tsv(raw, raw_fname_bids, scans_fname, verbose)
    290     _fid_json(raw, unit, orient, manufacturer, fid_fname, verbose)
    291     _meg_json(raw, task, manufacturer, meg_fname, verbose)

/Applications/anaconda/lib/python2.7/site-packages/mne_bids/bids_meg.pyc in _scans_tsv(raw, raw_fname, fname, verbose)
    106         meas_date = meas_date[0]
    107 
--> 108     acq_time = datetime.fromtimestamp(meas_date
    109                                       ).strftime('%Y-%m-%dT%H:%M:%S')
    110 

TypeError: a float is required

Do you have any ideas?
Thanks a lot
Romain

[jasmainak]

In your raw file, can you tell me what do you get when you do raw.info['meas_date']?

[romquentin]

I have nothing in raw.info['meas_date']. The total info is:

bads : list | 0 items
  buffer_size_sec : float64 | 2.0
  ch_names : list | USPT001, SCLK01-177, BG1-1609, BG2-1609, BG3-1609, ...
  chs : list | 307 items (REF_MEG: 28, STIM: 1, MISC: 6, MAG: 272)
  comps : list | 5 items
  ctf_head_t : Transform | 3 items
  custom_ref_applied : bool | False
  dev_ctf_t : Transform | 3 items
  dev_head_t : Transform | 3 items
  dig : list | 3 items
  events : list | 0 items
  experimenter : unicode | 8 items
  highpass : float | 0.0 Hz
  hpi_meas : list | 0 items
  hpi_results : list | 1 items
  lowpass : float | 600.0 Hz
  meas_id : dict | 4 items
  nchan : int | 307
  proc_history : list | 0 items
  projs : list | 0 items
  sfreq : float | 1200.0 Hz
  subject_info : dict | 1 items
  acq_pars : NoneType
  acq_stim : NoneType
  description : NoneType
  file_id : NoneType
  gantry_angle : NoneType
  hpi_subsystem : NoneType
  kit_system_id : NoneType
  line_freq : NoneType
  meas_date : NoneType
  proj_id : NoneType
  proj_name : NoneType
  xplotter_layout : NoneType

[jasmainak]

okay, thanks for that. I know what to fix now. I'll let you know when it's fixed :-)

[romquentin]

Hi,
Did you have time to look at it?
Thank you for your help!
Romain

[jasmainak]

see #23

[romquentin]

Thanks!

[jasmainak]

@romquentin would you mind sharing your problematic CTF file? Thanks

[romquentin]

Yes, you can find one CTF-MEG run here:
https://www.dropbox.com/s/5qkd9eyl9v4kf2y/CTFrun_01.ds.zip?dl=0
Let me know if you need anything else.