如何用symbols函数而不用stars函数画星状图

wangbigboss

stars函数画星状图比较简单，网上也有例子：
stars(class1,draw.segments=TRUE,col.segments=c("yellow","lightgray","blue","green","red"))
也有symbols画圆的：
symbols(x,y,circle = r,
        bg=rainbow(10))
但是怎么用symbols函数画星状图呢？
symbols帮助文档为：symbols(x, y = NULL, circles, squares, rectangles, stars,
        thermometers, boxplots, inches = TRUE, add = FALSE,        fg = par("col"), bg = NA,        xlab = NULL, ylab = NULL, main = NULL,        xlim = NULL, ylim = NULL, ...)