def _plt_src(name, kw_brain_obj, active_data, active_vert, sources,
kw_source_obj, kw_activation, show):
# Define a brain object and a source object :
logger.info(' Define a Brain and Source objects')
from visbrain.objects import BrainObj, SourceObj, SceneObj
brain_obj, source_obj = name + '_brain', name + '_sources'
b_obj = BrainObj(brain_obj, **kw_brain_obj)
s_obj = SourceObj(source_obj, sources, **kw_source_obj)
s_obj.visible_obj = False
# Add data to the BrainObj if needed :
if isinstance(active_data, np.ndarray):
logger.info(" Add active data between "
"[%2f, %2f]" % (active_data.min(), active_data.max()))
b_obj.add_activation(data=active_data,
vertices=active_vert,
**kw_activation)
# Return either a scene or a BrainObj and SourceObj :
if show is True: # Display inside the Brain GUI
# Define a Brain instance :
from visbrain.gui import Brain
brain = Brain(brain_obj=b_obj, source_obj=s_obj)
brain._brain_template.setEnabled(False)
# By default, display colorbar if activation :
if isinstance(active_data, np.ndarray):
brain.menuDispCbar.setChecked(True)
brain._fcn_menu_disp_cbar()
brain.show()
elif show is 'scene': # return a SceneObj
logger.info(" Define a unique scene for the Brain and Source "
"objects")
sc = SceneObj()
sc.add_to_subplot(s_obj)
sc.add_to_subplot(b_obj, use_this_cam=True)
return sc
else: # return the BrainObj and SourceObj
s_obj.visible_obj = True
return b_obj, s_obj
def _plt_src(name, kw_brain_obj, active_data, active_vert, sources,
kw_source_obj, kw_activation, show):
# Define a brain object and a source object :
logger.info(' Define a Brain and Source objects')
from visbrain.objects import BrainObj, SourceObj, SceneObj
brain_obj, source_obj = name + '_brain', name + '_sources'
b_obj = BrainObj(brain_obj, **kw_brain_obj)
s_obj = SourceObj(source_obj, sources, **kw_source_obj)
s_obj.visible_obj = False
# Add data to the BrainObj if needed :
if isinstance(active_data, np.ndarray):
logger.info(" Add active data between "
"[%2f, %2f]" % (active_data.min(), active_data.max()))
b_obj.add_activation(data=active_data, vertices=active_vert,
**kw_activation)
# Return either a scene or a BrainObj and SourceObj :
if show is True: # Display inside the Brain GUI
# Define a Brain instance :
from visbrain.gui import Brain
brain = Brain(brain_obj=b_obj, source_obj=s_obj)
brain._brain_template.setEnabled(False)
# By default, display colorbar if activation :
if isinstance(active_data, np.ndarray):
brain.menuDispCbar.setChecked(True)
brain._fcn_menu_disp_cbar()
brain.show()
elif show is 'scene': # return a SceneObj
logger.info(" Define a unique scene for the Brain and Source "
"objects")
sc = SceneObj()
sc.add_to_subplot(s_obj)
sc.add_to_subplot(b_obj, use_this_cam=True)
return sc
else: # return the BrainObj and SourceObj
s_obj.visible_obj = True
return b_obj, s_obj
"""
Display conjunction map
=======================
Display a conjunction map from a nii.gz file (NiBabel required).
See the original PySurfer example :
https://pysurfer.github.io/auto_examples/plot_fmri_conjunction.html#sphx-glr-auto-examples-plot-fmri-conjunction-py
.. image:: ../../_static/examples/ex_eegmeg_conjunction_map.png
"""
from visbrain.gui import Brain
from visbrain.objects import BrainObj
from visbrain.io import download_file
"""Download files if needed
"""
file_1 = download_file('lh.sig.nii.gz', astype='example_data')
file_2 = download_file('lh.alt_sig.nii.gz', astype='example_data')
b_obj = BrainObj('inflated', translucent=False, sulcus=True)
b_obj.add_activation(file=file_1, clim=(4., 30.), hide_under=4, cmap='Reds_r',
hemisphere='left')
b_obj.add_activation(file=file_2, clim=(4., 30.), hide_under=4, cmap='Blues_r',
hemisphere='left')
vb = Brain(brain_obj=b_obj)
vb.rotate('left')
vb.show()
"""Create the source object. If you want to previsualize the result without
opening Brain, use s_obj.preview()
"""
s_obj = SourceObj('SourceExample', xyz, **kwargs)
# s_obj.preview()
"""Color sources according to the data
"""
# s_obj.color_sources(data=kwargs['data'], cmap='viridis')
"""Colorbar properties
"""
cb_kw = dict(
cblabel="Project source activity",
cbtxtsz=3.,
border=False,
)
"""Define a brain object with the B3 template and project source's activity
onto the surface
"""
b_obj = BrainObj('B3', **cb_kw)
b_obj.project_sources(s_obj,
cmap='viridis',
vmin=50.,
under='orange',
vmax=550.,
over='darkred')
"""Create a Brain instance and pass both of the brain and source object defined
After the interface is opened, press C to display the colorbar.
"""
vb = Brain(source_obj=s_obj, brain_obj=b_obj)
vb.show()
# Additional inputs for SourceObj :
kw_s_obj = dict(color='blue', symbol='square')
# Additional inputs for activations (colormap, clim...) :
kw_activation = dict(cmap='viridis', hide_under=10000,
clim=(active_data.min(), active_data.max()), vmax=20000,
over='red')
###############################################################################
# Get the brain and source objects
###############################################################################
# Note that here, we use `show=False`. In that case, a
# :class:`visbrain.objects.BrainObj` and a :class:`visbrain.objects.SourceObj`
# are returned.
b_obj, s_obj = mne_plot_source_space(fif_file, active_data=active_data,
kw_brain_obj=kw_b_obj,
kw_source_obj=kw_s_obj,
kw_activation=kw_activation,
show=False)
###############################################################################
# Pass the brain and source objects to the :class:`visbrain.Brain` module
###############################################################################
# Note that here, we pass the source object to Brain but by default we set it
# as not visible. But if you don't need to see it, simply remove the
# `source_obj=s_obj`
s_obj.visible_obj = False
brain = Brain(brain_obj=b_obj, source_obj=s_obj)
brain.show()
def visualise_brain(b_obj):
"""Opens Visbrain GUI with colored ROI
"""
vb = Brain(brain_obj=b_obj, bgcolor='black')
vb.show()