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Removing lines through characters in legend in r

How to remove lines intersecting characters in legend r? We looked through the legend, but could not find the answer.

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)

enter image description here

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2 answers

Just add 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)

EDIT

Removing lwd=2should be sufficient as Josh O'Brien pointed out, so your code should be:

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)

enter image description here

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You only get these lines because you specified lwd=2which tells the function legend()that you want "line width = 2". If you don't need strings, just drop the argument lwd=.

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