SHAPforxgboost (version 0.2.0)

shap.plot.force_plot: Create SHAP force plot (stacked bar chart)

Description

Displays feature contributions as stacked bars for individual predictions. Each bar shows how features push the prediction above or below the baseline. Supports optional zoom-in for detailed inspection of observation clusters.

Usage

shap.plot.force_plot(
  shapobs,
  id = "sorted_id",
  zoom_in_location = NULL,
  y_parent_limit = NULL,
  y_zoomin_limit = NULL,
  zoom_in = TRUE,
  zoom_in_group = NULL
)

Arguments

shapobs

The dataset obtained by shap.prep.stack.data.

id

the id variable.

zoom_in_location

where to zoom in, default at place of 60 percent of the data.

y_parent_limit

set y-axis limits.

y_zoomin_limit

c(a,b) to limit the y-axis in zoom-in.

zoom_in

default to TRUE, zoom in by ggforce::facet_zoom.

zoom_in_group

optional to zoom in certain cluster.

Examples

# Example: SHAP force plots (stacked bar charts)
# Shows contribution of each feature to individual predictions

plot_data <- shap.prep.stack.data(shap_contrib = shap_values_iris,
                                  n_groups = 4)
shap.plot.force_plot(plot_data)
shap.plot.force_plot(plot_data, zoom_in_group = 2)

# Plot all clusters separately
shap.plot.force_plot_bygroup(plot_data)