If all subjects don't have all tasks and sub is set, an error arises

[wiheto]

So perhaps a niched case, but the following raises an error

sub-1_task-a.nii
sub-1_task-b.nii
sub-2_task-b.nii

If you run: fmridenoise ... sub-2 an error will be raised because it tries to find the data for task-a.

Problem seems to be occurring around lines 206-220 in BIDSGrab in bids.py. But couldn't think of a quick fix for what to do (to solve the issue I'm adding a task flag to all my jobs)

[kfinc]

@kbonna, any ideas on how to fix this in BIDSGrabber interface?

[SiegfriedWagner]

I can try fixing this as part of my current messing up with BIDSGrabber.
Do I understand this problem correctly? - @wiheto, you wanted to run your example dataset with only sub-2 as arg and without any task arg and then error rises, right?

[wiheto]

Correct.

Here is the crash file:

File: /home/users/wiltho/code/es-fmri/fmriprep/fmridenoise/crash-20191021-112817-wiltho-BidsGrabber-ed9416f3-4cbb-410b-bd3b-d1d4a6a9834b.pklz
Node: fmridenoise_wf.BidsGrabber
Working directory: /tmp/fmridenoise/fmridenoise_wf/BidsGrabber
Node inputs:
bids_dir = /scratch/users/wiltho/data/esfmri
derivatives = ['/scratch/users/wiltho/data/esfmri/derivatives/fmriprep-1.5.1/fmriprep']
ica_aroma = False
session = <undefined>
subject = ['357']
task = <undefined>
Traceback: 
Traceback (most recent call last):
  File "/opt/conda/lib/python3.6/site-packages/fmridenoise/interfaces/bids.py", line 290, in _run_interface
    example_file = layout_for_tr.get(**filter_fmri_tr)[0]
IndexError: list index out of range
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
  File "/opt/conda/lib/python3.6/site-packages/nipype/pipeline/plugins/multiproc.py", line 69, in run_node
    result['result'] = node.run(updatehash=updatehash)
  File "/opt/conda/lib/python3.6/site-packages/nipype/pipeline/engine/nodes.py", line 479, in run
    result = self._run_interface(execute=True)
  File "/opt/conda/lib/python3.6/site-packages/nipype/pipeline/engine/nodes.py", line 569, in _run_interface
    return self._run_command(execute)
  File "/opt/conda/lib/python3.6/site-packages/nipype/pipeline/engine/nodes.py", line 662, in _run_command
    result = self._interface.run(cwd=outdir)
  File "/opt/conda/lib/python3.6/site-packages/nipype/interfaces/base/core.py", line 382, in run
    runtime = self._run_interface(runtime)
  File "/opt/conda/lib/python3.6/site-packages/fmridenoise/interfaces/bids.py", line 292, in _run_interface
    raise MissingFile(f"no imaging file found for task {t}")
fmridenoise.interfaces.bids.MissingFile: no imaging file found for task rest

Subject 357 does not have the task rest.