gnuplot中的加/减符号? [英] Plus/minus symbol in gnuplot?

问题描述

我正在gnuplot中生成.eps数字，以使用

I'm generating .eps figures in gnuplot for inclusion into papers typeset with LaTeX, using

set terminal postscript eps enhanced "Helvetica" 14

这通常可以完美地工作，但是我现在正在尝试使用包含±符号的标签来组合图形.如果我直接使用它，例如

This generally works perfectly, but i'm now trying to put together a figure using a label that includes a ± symbol. If I use it directly, e.g.

set label "-56±2"

然后它正确显示在默认的"wxt"终端上，但在后记输出中以A开头并带有抑扬符(即-56±2).使用

then it appears correctly on the default 'wxt' terminal but is prefixed by an A with a circumflex (i.e. -56±2) in the postscript output. Using

set label "-56^+/-2" 

有效，但看起来很垃圾.过去，我通过使用'Angstrom'字符(Å)

works but looks rubbish. In the past i've used the 'Angstrom' character (Å) by doing

set encoding iso_8859_1 
set xlabel "wavelength (\305)"

，但我也没有设法使它适用于±的unicode表示形式，我认为它是\ 261(请参阅

but I haven't managed to get this to work either for the unicode representation of ± which I think is \261 (see http://www.fileformat.info/info/unicode/char/00b1/index.htm), i.e.

set label "-56 \261 2" 

但我只是在-56和2之间留有空白.有关如何执行此操作的任何想法?如果重要的话，Ubuntu 10.10和Gnuplot 4.4补丁程序级别0.

but I just get an empty space between the -56 and 2. Any ideas on how to do this? Ubuntu 10.10 and Gnuplot 4.4 patchlevel 0, if it's important.

推荐答案

从Gnuplot的角度来看，正确的答案确实是这样的:

Just for the record, from the Gnuplot perspective the correct answer does appear to be this:

set encoding iso_8859_1 
set label "-56 \261 2" 

给出标签

-56 ± 2

它可以完美地在另一台机器(相同的Gnuplot级别)上运行，因此我不确定为什么原来的Ubuntu机器上有问题.两台机器都能正确显示生成的.eps文件.

It works perfectly on a different machine (same Gnuplot level) so i'm not sure why there's an issue on the original Ubuntu machine; both machines display the resultant .eps file correctly.

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