# Let's get started. In this tutorial, we will visualize some bundles
# together with FA or T1. We will be able to change the slices using
# a ``LineSlider2D`` widget.
#
# First we need to fetch and load some datasets.
from dipy.data.fetcher import fetch_bundles_2_subjects, read_bundles_2_subjects
fetch_bundles_2_subjects()
###############################################################################
# The following function outputs a dictionary with the required bundles e.g.
# ``af left`` (left arcuate fasciculus) and maps, e.g. FA for a specific
# subject.
res = read_bundles_2_subjects('subj_1', ['t1', 'fa'],
['af.left', 'cst.right', 'cc_1'])
###############################################################################
# We will use 3 bundles, FA and the affine transformation that brings the voxel
# coordinates to world coordinates (RAS 1mm).
streamlines = res['af.left'] + res['cst.right'] + res['cc_1']
data = res['fa']
shape = data.shape
affine = res['affine']
###############################################################################
# With our current design it is easy to decide in which space you want the
# streamlines and slices to appear. The default we have here is to appear in
# world coordinates (RAS 1mm).
together with FA or T1. We will be able to change the slices using
a ``slider`` widget.
First we need to fetch and load some datasets.
"""
from dipy.data.fetcher import fetch_bundles_2_subjects, read_bundles_2_subjects
fetch_bundles_2_subjects()
"""
The following function outputs a dictionary with the required bundles e.g., af
left (left arcuate fasciculus) and maps, e.g., FA for a specific subject.
"""
res = read_bundles_2_subjects('subj_1', ['t1', 'fa'],
['af.left', 'cst.right', 'cc_1'])
"""
We will use 3 bundles, FA and the affine transformation that brings the voxel
coordinates to world coordinates (RAS 1mm).
"""
streamlines = res['af.left'] + res['cst.right'] + res['cc_1']
data = res['fa']
shape = data.shape
affine = res['affine']
"""
With our current design it is easy to decide in which space you want the
streamlines and slices to appear. The default we have here is to appear in
world coordinates (RAS 1mm).
