# mne.viz.plot_evoked_topo¶

mne.viz.plot_evoked_topo(evoked, layout=None, layout_scale=0.945, color=None, border='none', ylim=None, scalings=None, title=None, proj=False, vline=[0.0], fig_background=None, merge_grads=False, legend=True, axes=None, background_color='w', noise_cov=None, show=True)[source]

Plot 2D topography of evoked responses.

Clicking on the plot of an individual sensor opens a new figure showing the evoked response for the selected sensor.

Parameters
evoked

The evoked response to plot.

layoutinstance of Layout | None

Layout instance specifying sensor positions (does not need to be specified for Neuromag data). If possible, the correct layout is inferred from the data.

layout_scale: float

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

color

Everything matplotlib accepts to specify colors. If not list-like, the color specified will be repeated. If None, colors are automatically drawn.

borderstr

matplotlib borders style to be used for each sensor plot.

ylim

ylim for plots (after scaling has been applied). The value determines the upper and lower subplot limits. e.g. ylim = dict(eeg=[-20, 20]). Valid keys are eeg, mag, grad, misc. If None, the ylim parameter for each channel is determined by the maximum absolute peak.

scalings

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

titlestr

Title of the figure.

projbool | ‘interactive’

If true SSP projections are applied before display. If ‘interactive’, a check box for reversible selection of SSP projection vectors will be shown.

vline

The values at which to show a vertical line.

fig_background

A background image for the figure. This must work with a call to plt.imshow. Defaults to None.

Whether to use RMS value of gradiometer pairs. Only works for Neuromag data. Defaults to False.

legend

If True, create a legend based on evoked.comment. If False, disable the legend. Otherwise, the legend is created and the parameter value is passed as the location parameter to the matplotlib legend call. It can be an integer (e.g. 0 corresponds to upper right corner of the plot), a string (e.g. ‘upper right’), or a tuple (x, y coordinates of the lower left corner of the legend in the axes coordinate system). See matplotlib documentation for more details.

axesinstance of matplotlib Axes | None

Axes to plot into. If None, axes will be created.

background_colorcolor

Background color. Typically ‘k’ (black) or ‘w’ (white; default).

New in version 0.15.0.

noise_covinstance of Covariance | str | None

Noise covariance used to whiten the data while plotting. Whitened data channel names are shown in italic. Can be a string to load a covariance from disk.

New in version 0.16.0.

showbool

Show figure if True.

Returns
figinstance of matplotlib.figure.Figure

Images of evoked responses at sensor locations