Generic function for plotting contrasts.
Value
A plot object (typically ggplot2) displaying the contrasts. The exact type depends on the method used.
Examples
# Create example data
des <- data.frame(
onset = c(1, 3, 5, 7),
cond = factor(c("A", "B", "A", "B")),
run = c(1, 1, 1, 1)
)
# Create sampling frame and event model
sframe <- fmrihrf::sampling_frame(blocklens = 40, TR = 1)
# Create contrast set
cset <- contrast_set(
main_A = unit_contrast(~ cond == "A", name = "A_vs_baseline"),
diff = pair_contrast(~ cond == "A", ~ cond == "B", name = "A_vs_B")
)
# Create event model with contrasts
emod <- event_model(onset ~ hrf(cond, contrasts = cset),
data = des, block = ~run, sampling_frame = sframe)
# Plot the contrasts
plot_contrasts(emod)
