mne.viz.plot_topo_image_epochs#

mne.viz.plot_topo_image_epochs(epochs, layout=None, sigma=0.0, vmin=None, vmax=None, colorbar=None, order=None, cmap='RdBu_r', layout_scale=0.95, title=None, scalings=None, border='none', fig_facecolor='k', fig_background=None, font_color='w', show=True)[source]#

Plot Event Related Potential / Fields image on topographies.

Parameters:

epochsinstance of Epochs

The epochs.

layoutinstance of Layout

System specific sensor positions.

sigmafloat

The standard deviation of the Gaussian smoothing to apply along the epoch axis to apply in the image. If 0., no smoothing is applied.

vminfloat

The min value in the image. The unit is µV for EEG channels, fT for magnetometers and fT/cm for gradiometers.

vmaxfloat

The max value in the image. The unit is µV for EEG channels, fT for magnetometers and fT/cm for gradiometers.

colorbarbool | None

Whether to display a colorbar or not. If None a colorbar will be shown only if all channels are of the same type. Defaults to None.

orderNone | array of int | callable()

If not None, order is used to reorder the epochs on the y-axis of the image. If it’s an array of int it should be of length the number of good epochs. If it’s a callable the arguments passed are the times vector and the data as 2d array (data.shape[1] == len(times)).

cmapcolormap

Colors to be mapped to the values.

layout_scalefloat

Scaling factor for adjusting the relative size of the layout on the canvas.

titlestr

Title of the figure.

scalingsdict | None

The scalings of the channel types to be applied for plotting. If None, defaults to dict(eeg=1e6, grad=1e13, mag=1e15).

borderstr

Matplotlib borders style to be used for each sensor plot.

fig_facecolorcolor

The figure face color. Defaults to black.

fig_backgroundNone | array

A background image for the figure. This must be a valid input to matplotlib.pyplot.imshow(). Defaults to None.

font_colorcolor

The color of tick labels in the colorbar. Defaults to white.

showbool

Whether to show the figure. Defaults to True.

Returns:

figinstance of matplotlib.figure.Figure

Figure distributing one image per channel across sensor topography.

Notes

In an interactive Python session, this plot will be interactive; clicking on a channel image will pop open a larger view of the image; this image will always have a colorbar even when the topo plot does not (because it shows multiple sensor types).