Visualize both observations and variables in PC space
Usage
tidy_pca_biplot(
pca_obj,
pc_x = 1,
pc_y = 2,
color_by = NULL,
arrow_scale = 1,
label_obs = FALSE,
label_vars = TRUE
)Arguments
- pca_obj
A tidy_pca object
- pc_x
Principal component for x-axis (default: 1)
- pc_y
Principal component for y-axis (default: 2)
- color_by
Optional grouping to colour points by: either a column name present in the PCA scores, or a vector as long as the data.
- arrow_scale
Scaling factor for variable arrows (default: 1)
- label_obs
Logical; label observations? (default: FALSE)
- label_vars
Logical; label variables? (default: TRUE)
Value
A ggplot object.
Examples
# \donttest{
pca <- tidy_pca(USArrests)
tidy_pca_biplot(pca)
# }