如何在 R 中根据不同形状的点来绘制情节?


在基础 R 中,可以使用 plot 函数内部的 pch 参数来创建具有不同形状点的绘图。pch 值与形状的列表如下所写 -

pch = 0 display square
pch = 1 display circle
pch = 2 display triangle point up
pch = 3 display plus
pch = 4 display cross
pch = 5 display diamond
pch = 6 display triangle point down
pch = 7 display square cross
pch = 8 display star
pch = 9 display diamond plus
pch = 10 display circle plus
pch = 11 display triangles up and down
pch = 12 display square plus
pch = 13 display circle cross
pch = 14 display square and triangle down
pch = 15 display filled square
pch = 16 display filled circle
pch = 17 display filled triangle point-up
pch = 18 display filled diamond
pch = 19 display solid circle
pch = 20 display bullet (smaller circle)
pch = 21 display filled circle blue
pch = 22 display filled square blue
pch = 23 display filled diamond blue
pch = 24 display filled triangle point-up blue
pch = 25 display filled triangle point down blue

示例

考虑以下矢量并创建具有三种不同形状的点图表 -

 在线演示

x<-sample(0:5,20,replace=TRUE)
y<-sample(1:10,20,replace=TRUE)
plot(x,y,pch=c(16,17,18))

输出

创建具有不同形状颜色的相同绘图 -

示例

plot(x,y,pch=c(16,17,18),col=c("red","yellow","blue"))

输出

更新于: 2020 年 10 月 17 日

906 次浏览

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