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.

7.10.6. nilearn.plotting.plot_img

nilearn.plotting.plot_img(img, cut_coords=None, output_file=None, display_mode='ortho', figure=None, axes=None, title=None, threshold=None, annotate=True, draw_cross=True, black_bg=False, colorbar=False, resampling_interpolation='continuous', bg_img=None, vmin=None, vmax=None, **kwargs)

Plot cuts of a given image (by default Frontal, Axial, and Lateral)

img: Niimg-like object


cut_coords: None, a tuple of floats, or an integer

The MNI coordinates of the point where the cut is performed If display_mode is ‘ortho’ or ‘tiled’, this should be a 3-tuple: (x, y, z) For display_mode == ‘x’, ‘y’, or ‘z’, then these are the coordinates of each cut in the corresponding direction. If None is given, the cuts is calculated automaticaly. If display_mode is ‘x’, ‘y’ or ‘z’, cut_coords can be an integer, in which case it specifies the number of cuts to perform

output_file: string, or None, optional

The name of an image file to export the 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.

display_mode{‘ortho’, ‘tiled’, ‘x’, ‘y’, ‘z’, ‘yx’, ‘xz’, ‘yz’}

Choose the direction of the cuts: ‘x’ - sagittal, ‘y’ - coronal, ‘z’ - axial, ‘ortho’ - three cuts are performed in orthogonal directions, ‘tiled’ - three cuts are performed and arranged in a 2x2 grid.

figureinteger or matplotlib figure, optional

Matplotlib figure used or its number. If None is given, a new figure is created.

axesmatplotlib axes or 4 tuple of float: (xmin, ymin, width, height), optional

The axes, or the coordinates, in matplotlib figure space, of the axes used to display the plot. If None, the complete figure is used.

titlestring, optional

The title displayed on the figure.

thresholda number, None, or ‘auto’

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. If auto is given, the threshold is determined magically by analysis of the image.

annotate: boolean, optional

If annotate is True, positions and left/right annotation are added to the plot.

draw_cross: boolean, optional

If draw_cross is True, a cross is drawn on the plot to indicate the cut plosition.

black_bg: boolean, optional

If True, the background of the image is set to be black. If you wish to save figures with a black background, you will need to pass “facecolor=’k’, edgecolor=’k’” to matplotlib.pyplot.savefig.

colorbar: boolean, optional

If True, display a colorbar on the right of the plots.


Interpolation to use when resampling the image to the destination space. Can be “continuous” (default) to use 3rd-order spline interpolation, or “nearest” to use nearest-neighbor mapping. “nearest” is faster but can be noisier in some cases.

bg_imgNiimg-like object, optional

See The background image that the ROI/mask will be plotted on top of. If nothing is specified, no background image is plotted.

vminfloat, optional

lower bound of the colormap. If None, the min of the image is used.

vmaxfloat, optional

upper bound of the colormap. If None, the max of the image is used.

kwargs: extra keyword arguments, optional

Extra keyword arguments passed to matplotlib.pyplot.imshow