Renders Kulldorff-style circular candidate windows on the TPS canvas.
Currently a thin layer over centroids + radius circles; the full
likelihood-ratio overlay and significance ranking depend on the Python
morie.tps_satscan module and are stubbed.
Examples
clusters <- data.frame(lat = c(43.70, 43.75), lon = c(-79.40, -79.30),
radius_km = c(1.5, 2.2))
out <- morie_tps_render_satscan_panel(clusters,
outfile = tempfile(fileext = ".png"))
