rtCommon.bidsRun

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bidsRun.py

Implements the BIDS Run data type used for representing full fMRI scanning runs as sequences of BIDS incrementals.

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Module Contents

Classes

BidsRun

Attributes

logger

rtCommon.bidsRun.logger

class rtCommon.bidsRun.BidsRun(**entities)

__eq__(other)

Return self==value.

getIncremental(index: int) → rtCommon.bidsIncremental.BidsIncremental

Returns the incremental in the run at the provided index.

Parameters

index – Which image of the run to get (0-indexed)

Returns

Incremental at provided index.

Raises

IndexError – If index is out of bounds for this run.

Examples

>>> print(run.numIncrementals())
5
>>> inc = run.getIncremental(1)
>>> inc2 = run.getIncremental(5)
IndexError

appendIncremental(incremental: rtCommon.bidsIncremental.BidsIncremental, validateAppend: bool = True) → None

Appends an incremental to this run’s data, setting the run’s entities if the run is empty.

Parameters

• incremental – The incremental to add to the run.

• validateAppend – Validate the incremental matches the current run’s data (default True). Turning off is useful for efficiently creating a whole run at once from an existing image volume, where all data is known to be match already.

Raises

MetadataMismatchError – If either the incremental’s entities, its images’s NIfTI header, or its metadata doesn’t match the existing run’s data.

Examples

Suppose a NIfTI image and metadata dictionary are available in the environment.

>>> incremental = BidsIncremental(image, metadata)
>>> run = BidsRun()
>>> run.appendIncremental(incremental)
>>> metadata['subject'] = 'new_subject'
>>> incremental2 = BidsIncremental(image, metadata)
>>> run.appendIncremental(incremental2)
MetadataMismatchError

asSingleIncremental() → rtCommon.bidsIncremental.BidsIncremental

Coalesces the entire run into a single BIDS-I that can be sent over a network, written to disk, or added to an archive.

Returns

BidsIncremental with all image data and metadata represented by the

incrementals composing the run, or None if the run is empty.

Examples

>>> incremental = run.asSingleIncremental()
>>> incremental.writeToDisk('/tmp/new_dataset')

numIncrementals() → int

Returns number of incrementals in this run.

getRunEntities() → dict

Returns dictionary of the BIDS entities associated with this run.

Examples

>>> print(run.getRunEntities())
{'subject': '01', 'session': '01', 'task': 'test', run: 1,
'datatype': 'func', 'suffix': 'bold'}