% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/testgraphic.R
\name{ugd_test_pattern}
\alias{ugd_test_pattern}
\title{Plot a 16-panel test pattern for evaluating graphics devices.}
\usage{
ugd_test_pattern()
}
\value{
Invisible \code{NULL}; called for the side effect of drawing.
}
\description{
Renders a 4x4 grid of panels, each isolating a specific drawing primitive or
device feature. Covers all 8 DrawCall types (Rect, Circle, Line, Polygon,
Polyline, Path, Text, Raster) plus clipping, alpha blending, line styles,
text metrics, anti-aliasing hints, and point characters.
}
\examples{
\dontrun{

ugd_test_pattern()
}
}
