Downloading and converting the Neurosynth database

Download and convert the Neurosynth database for analysis with NiMARE.

..note::

This will likely change as we work to shift database querying to a remote database, rather than handling it locally with NiMARE.

Start with the necessary imports

import os.path as op
from os import mkdir
from neurosynth.base.dataset import download

from nimare.io import convert_neurosynth_to_dataset
from nimare.dataset import Dataset

Download Neurosynth

out_dir = op.abspath('../example_data/')
if not op.isdir(out_dir):
    mkdir(out_dir)

if not op.isfile(op.join(out_dir, 'database.txt')):
    download(out_dir, unpack=True)

Convert Neurosynth database to NiMARE dataset file

dset = convert_neurosynth_to_dataset(op.join(out_dir, 'database.txt'),
                                     op.join(out_dir, 'features.txt'))
gz_file = op.join(out_dir, 'neurosynth_dataset.pkl.gz')
dset.save(gz_file)