surreal_image(): Create surreal datasets directly from image files or URLs.
Supports PNG, JPEG, BMP, TIFF, and SVG formats with automatic mode detection
and threshold calculation.
surreal_app(): Launch an interactive Shiny application for exploring the
surreal algorithm. Includes demo datasets, custom text input, image uploads,
and real-time parameter controls. Export results to CSV or download plots.
surreal(): embeds a hidden image supplied by (x, y) coordinates
into a data set that seemingly has no pattern until the residuals are plotted.surreal_text(): embeds a hidden text pattern into a data set that seemingly
has no pattern until the residuals are plotted.r_logo_image_data: a data set containing the R logo image that can be
hidden using the surreal() function.jack_o_lantern_image_data: a data set containing a hidden jack-o-lantern
image.