在情节的标题中连接字符串和表达式 [英] Concatenate strings and expressions in a plot's title

问题描述

如何在情节的标题中组合文本和数学表达式。如果我使用粘贴表达式转换为字符。例如，我想要这样的东西作为标题

$ ARL_1 $ curve $ S ^ 2 $

谢谢

解决方案

你想阅读？plotmath 做这样的事情这是一个例子：

  plot（1:10，main = expression（ARL [1]〜curve for〜S ^ 2））
  

[。] 是下标，而 ^ 给出上标。

编辑

strong>：通常我会做的：

  plot（1:10，main = expression（ARL [1]〜curve〜对于〜S ^ 2））
  

但是会导致错误，因为 / code>被解释为（）循环调用的的开始。

How can I combine text and math expressions in a plot's title. If I use paste the expression is converted to character. For example I want something like this as a title

$ARL_1$ curve for $S^2$

Thank you

解决方案

You want to read ?plotmath to see how to do this sort of thing. Here is an example:

plot(1:10, main = expression(ARL[1] ~ "curve for" ~ S^2))

The [.] is subscript, whilst ^ gives superscript. The ~ spaces out the parts of the expression as if there were literal spaces.

Edit: normally I would have done:

plot(1:10, main = expression(ARL[1] ~ curve ~ for ~ S^2))

but that throws an error because for is being interpreted as the start of a for() loop call.

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