R:legend()错误

Question

我正在尝试为一个情节生成一个图例,以在一个情节中显示颜色与聚类#的关系.我实际上并不需要它在图中我只想生成一个图例然后将其复制并粘贴到powerpoint幻灯片中.

我发现这里的代码可以满足我的需要:

http://www.statmethods.net/advgraphs/axes.html

# Legend Example
attach(mtcars)
boxplot(mpg~cyl, main="Milage by Car Weight",
    yaxt="n", xlab="Milage", horizontal=TRUE,
   col=terrain.colors(3))
legend("topright", inset=.05, title="Number of Cylinders",
    c("4","6","8"), fill=terrain.colors(3), horiz=TRUE)

但我很难复制它.这是我的代码:

plot(seq(1,7), seq(1,7), col = c(1:7))
legend("topright", inset = .05, title = "Cluster Colors"
    ,fill = c(1:7), horiz=T)

当我运行它时,我收到此错误:

Error in as.graphicsAnnot(legend) : 
  argument "legend" is missing, with no default

有什么建议？

Answer 1

原始情节有一个参数"传奇",它只是一个未命名的论点.在这里更新:

legend("topright", inset=.05, title="Number of Cylinders",
   legend =c("4","6","8"), fill=terrain.colors(3), horiz=TRUE)

所以,你需要的是这个.

plot(seq(1,7), seq(1,7), col = c(1:7))
legend("topright", inset = .05, title = "Cluster Colors",legend= c(1:7)
       ,fill = c(1:7), horiz=TRUE)

该?命令?legend用于查找这些内容.