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これらの「+」を太字にする必要があります。それは可能ですか、それとも他の記号を使用する必要がありますか?
plot(1:10,1:10,type="l") points(1:10,rep(5,10),pch="+")
textで使用できますfont=2:
text
font=2
plot(1:10,1:10,type="l") text(1:10,rep(5,10),label="+",font=2)
とpch=3_lwd
pch=3
lwd
plot(1:10,1:10,type="l") points(1:10,rep(5,10),pch=3,lwd=5)