英文:
Adding a character within "bquote" in legend
问题
在legend中的bquote中添加一个词如“today X5”的方法是：
legend("topleft",
legend=c(paste("today ", as.expression(bquote("X"[.(i)])))),
col=c(1, 2), pch=c(2, 3))
英文:
How can I add a word within the bquote in the legend? Using the code
x <- 1:100
y <- x^2
plot(x, y)
i <- 5
legend("topleft",
legend=c(c(as.expression(bquote("X"[.(i)]))),
as.expression(bquote("X"[.(i)]))), col=c(1, 2), pch=c(2, 3))
I got
this
but i want a legend box where a word before the math expression X5 will be placed such as today X5.
So I use
legend("topleft", legend=c(c(as.expression(bquote("today" "X"[.(i)]))),
as.expression(bquote("tommorrow" "X"[.(i)]))),
col=c(1, 2), pch=c(2, 3))
but this gave me error. How could I get my desired legend box?
答案1
得分: 3
You can use bquote independently of expression.
plot.new(); plot.window(c(1, 100), c(1, 1e3)); box()
i <- 5; j <- 6
legend('topleft', legend=c(bquote(today~X[.(i)]),
bquote(tomorrow~X[.(j)])),
col=1:2, pch=2:3)
英文:
You can use bquote independently of expression.
plot.new();plot.window(c(1, 100), c(1, 1e3));box()
i <- 5; j <- 6
legend('topleft', legend=c(bquote(today~X[.(i)]),
bquote(tomorrow~X[.(j)])),
col=1:2, pch=2:3)
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