Plot Source Localization Results — eegPlotSource • PhysioEEG

Visualizes source localization results as a 2D scatter plot or flat map projection. Sources are sized and colored by amplitude, with optional thresholding to show only the strongest activations.

Usage

eegPlotSource(
  x,
  source_data = NULL,
  method = c("scatter", "flatmap"),
  threshold_pct = 80
)

Arguments

x: A PhysioExperiment object.
source_data: Named numeric vector of source amplitudes or a data.frame with columns x, y, and amplitude. If NULL, reads from metadata(x)$source_estimate.
method: Display method: "scatter" for points on a 2D brain outline or "flatmap" for filled regions using interpolation.
threshold_pct: Numeric percentile threshold (0-100). Only sources above this percentile are displayed (default: 80).

Value

A ggplot2 object.

Examples

if (FALSE) { # \dontrun{
pe <- make_eeg(n_time = 1000, n_channels = 19, sr = 250)
src <- data.frame(x = runif(50, -1, 1), y = runif(50, -1, 1),
                  amplitude = rnorm(50)^2)
eegPlotSource(pe, source_data = src, method = "scatter")
} # }