matlab:将带圆圈的数字放在图形上 [英] matlab: putting a circled number onto a graph

问题描述

我想在图表上放置一个带圆圈的数字作为标记靠近(但不是在)一个点.听起来很简单，但我也想保持缩放/纵横比不变.

I want to put a circled number on a graph as a marker near (but not on) a point. Sounds easy, but I also want to be invariant of zoom/aspect ratio changes.

由于这个不变量，我不能将圆绘制为线对象(在重新缩放时不重新绘制)；如果我使用圆形标记，则必须在重新缩放时调整其偏移量.

Because of this invariant, I can't draw a circle as a line object (without redrawing it upon rescale); if I use a circle marker, I'd have to adjust its offset upon rescale.

我能想到的最简单的方法是使用 Unicode 或 Wingdings 字符 ①②③等在 text() 函数的字符串中.但是 unicode 似乎不能正常工作，以下示例仅适用于 ①而不是其他数字(产生矩形框):

The simplest approach I can think of is to use the Unicode or Wingdings characters ① ② ③ etc. in a string for the text() function. But unicode doesn't seem to work right, and the following sample only works with ① and not for the other numbers (which yield rectangle boxes):

作品:

clf; text(0.5,0.5,char(129),'FontName','WingDings')

不起作用(应该是圈出的2):

doesn't work (should be a circled 2):

clf; text(0.5,0.5,char(130),'FontName','WingDings')

什么给出了，谁能建议一个解决方法?

What gives, and can anyone suggest a workaround?

推荐答案

这似乎对我有用，使用 Matlab 的 Latex 解释器，并且 \textcircled:

This seems to work for me, uses Matlab's latex interpreter, and \textcircled:

clf; text(0.5, 0.5, '$\textcircled{2}$', 'Interpreter', 'latex')

\textcircled 命令似乎有一些 偏移问题，也许您可​​以尝试改进使用的latex命令并告诉我们:)

The \textcircled command seems have some offset problems, maybe you can try to improve the used latex command and let us know :)

例如，按照上面的链接，我得到了更好的结果:

Following the above link, for example, I get better results with:

clf; text(0.5, 0.5, '$\raisebox{.5pt}{\textcircled{\raisebox{-.9pt} {2}}}$', 'Interpreter', 'latex')

不过，两位数看起来还是很糟糕.

Still, two digit numbers look awful.

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