Note

This page is a reference documentation. It only explains the function signature, and not how to use it. Please refer to the user guide for the big picture.

8.10.21. nilearn.plotting.plot_img_on_surf

nilearn.plotting.plot_img_on_surf(stat_map, surf_mesh='fsaverage5', mask_img=None, hemispheres=['left', 'right'], inflate=False, views=['lateral', 'medial'], output_file=None, title=None, colorbar=True, vmax=None, threshold=None, cmap='cold_hot', **kwargs)

Convenience function to plot multiple views of plot_surf_stat_map in a single figure. It projects stat_map into meshes and plots views of left and right hemispheres. The views argument defines the views that are shown. This function returns the fig, axes elements from matplotlib unless kwargs sets and output_file, in which case nothing is returned.

Parameters

stat_mapstr or 3D Niimg-like object

See http://nilearn.github.io/manipulating_images/input_output.html

surf_meshstr, dict, or None, optional

If str, either one of the two: ‘fsaverage5’: the low-resolution fsaverage5 mesh (10242 nodes) ‘fsaverage’: the high-resolution fsaverage mesh (163842 nodes) If dict, a dictionary with keys: [‘infl_left’, ‘infl_right’, ‘pial_left’, ‘pial_right’, ‘sulc_left’, ‘sulc_right’], where values are surface mesh geometries as accepted by plot_surf_stat_map. Default=’fsaverage5’.

mask_imgNiimg-like object or None, optional

The mask is passed to vol_to_surf. Samples falling out of this mask or out of the image are ignored during projection of the volume to the surface. If None, don’t apply any mask.

inflatebool, optional

If True, display images in inflated brain. If False, display images in pial surface. Default=False.

viewslist of strings, optional

A list containing all views to display. The montage will contain as many rows as views specified by display mode. Order is preserved, and left and right hemispheres are shown on the left and right sides of the figure. Default=[‘lateral’, ‘medial’].

hemisphereslist of strings, optional

Hemispheres to display. Default=[‘left’, ‘right’].

output_filestr, optional

The name of an image file to export plot to. Valid extensions are: .png, .pdf, .svg. If output_file is not None, the plot is saved to a file, and the display is closed. Return value is None.

titlestr, optional

Place a title on the upper center of the figure.

colorbarbool, optional

If True, a symmetric colorbar of the statistical map is displayed. Default=True.

vmaxfloat, optional

Upper bound for plotting of stat_map values.

thresholdfloat, optional

If None is given, the image is not thresholded. If a number is given, it is used to threshold the image, values below the threshold (in absolute value) are plotted as transparent.

cmapstr, optional

The name of a matplotlib or nilearn colormap. Default=’cold_hot’.

kwargsdict, optional

keyword arguments passed to plot_surf_stat_map.

See also

nilearn.datasets.fetch_surf_fsaverage

For surface data object to be used as the default background map for this plotting function.

nilearn.surface.vol_to_surf

For info on the generation of surfaces.

nilearn.plotting.plot_surf_stat_map

For info on kwargs options accepted by plot_img_on_surf.

8.10.21.1. Examples using nilearn.plotting.plot_img_on_surf

Making a surface plot of a 3D statistical map