4.4. Data Reader

4.4.1. Description

The DataReader is an object that is responsible for actually reading data files in junifer. It reads the value of the key path for each data type in the Data object and loads them into memory. After reading the data into memory, it adds the key data to the same level as path and the value is the actual data in the memory.

DataReaders are meant to be used inside the DataGrabber context but you can operate on them outside the context as long as the actual data is in the memory and the Python runtime has not garbage-collected it.

For data formats not supported by junifer yet, you can either make your own DataReader or open an issue on junifer Github and we can help you out.

4.4.2. File Formats

We already provide a concrete implementation DefaultDataReader which knows how to read the following file formats:

File extension

File type

Description

.nii

NIfTI (uncompressed)

Uncompressed NIfTI

.nii.gz

NIfTI (compressed)

Compressed NIfTI

.csv

CSV

Comma-separated values file

.tsv

TSV

Tab-separated values file