Create Elbow Plot for K-Means

Plot total within-cluster sum of squares vs number of clusters

Usage

plot_elbow(wss_data, add_line = FALSE, suggested_k = NULL)

Arguments

wss_data

A tibble with columns k and tot_withinss (from calc_wss)

add_line

Add vertical line at suggested optimal k? (default: FALSE)

suggested_k

If add_line=TRUE, which k to highlight

Value

A ggplot object.

Examples

# \donttest{
wss <- data.frame(k = 2:6, tot_withinss = c(150, 90, 60, 50, 45))
plot_elbow(wss)

# }