通过r中图例中的符号删除线条

Question

如何删除与r图例中的符号相交的线？ 看过了？传说但似乎无法找到答案..

plot.new()

legend("top",ncol=1,c("Mound reef (M)","Spur and Groove (SG)",
    "Rubble Fields (RF)","Coral Walls (CW)","Mounds and rubble fields (MR)",
    "Mounds, Monostand walls and Rubble (MMR)"),pch=3:8, title="Reef Types", 
    cex=1, lwd=2)

Answer 1

只需添加lty=NULL

plot.new()
legend("top",ncol=1,c("Mound reef (M)","Spur and Groove (SG)",
                      "Rubble Fields (RF)","Coral Walls (CW)",
                      "Mounds and rubble fields (MR)",
                      "Mounds, Monostand walls and Rubble (MMR)"),
       pch=3:8, title="Reef Types",cex=1,lwd=2, lty=NULL)

编辑

删除lwd=2应该足够Josh O'Brien指出，所以，你的代码应该是：

plot.new()
legend("top",ncol=1,c("Mound reef (M)","Spur and Groove (SG)",
                      "Rubble Fields (RF)","Coral Walls (CW)",
                      "Mounds and rubble fields (MR)",
                      "Mounds, Monostand walls and Rubble (MMR)"),
       pch=3:8, title="Reef Types",cex=1)

Answer 2

你只是得到那些行，因为你指定了lwd=2 ，它告诉你想要“line width = 2”的legend()函数。 如果你不想要行，只需删除lwd=参数即可。