Usage
xqqmath(x, data = NULL, panel = "panel.xqqmath", ...) panel.xqqmath(x, qqmathline = !(fitline || idline),
idline = FALSE, fitline = FALSE, slope = NULL,
intercept = NULL, overlines = FALSE, groups = NULL,
..., col.line = trellis.par.get("add.line")$col,
pch = 16, lwd = 2, lty = 2)