#' @rdname calculate_overall_feature_importance
#'
#' @export
calculate_cell_feature_importance <- function(
trajectory,
expression_source = "expression",
fi_method = fi_ranger_rf_lite(),
verbose = FALSE
) {
if (!dynwrap::is_wrapper_with_waypoints(trajectory)) {
trajectory <- trajectory %>% dynwrap::add_waypoints()
}
waypoints <- trajectory$waypoints
waypoint_feature_importances <-
calculate_waypoint_feature_importance(
trajectory = trajectory,
expression_source = expression_source,
waypoints = waypoints,
fi_method = fi_method,
verbose = verbose
)
geo <- trajectory$waypoints$geodesic_distances
closest_waypoints <- tibble(
cell_id = factor(colnames(geo), levels = colnames(geo)),
waypoint_id = factor(rownames(geo)[apply(geo, 2, which.min)], levels = waypoints$waypoints$waypoint_id %>% sort)
)
full_join(
closest_waypoints,
waypoint_feature_importances,
by = "waypoint_id"
) %>%
select(-.data$waypoint_id)
}
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