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From: Ethan A Merritt <EAMerritt@gmail.com>
Newsgroups: comp.graphics.apps.gnuplot
Subject: Re: plimsoll / standard enthalpy of formation
Date: Fri, 13 Feb 2015 19:38:33 -0800
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Jörg Buchholz wrote:

> Hello,
> 
> I will set a label and/or a xlabel with a "plimsoll" at superscript
> character.
> In LaTeX, with "\usepackage{chemmacros}", you can do it with something
> like this:
> 
> $\Delta H_{\mathrm{f}}^{\standardstate}$
> 
> For the term postscript enhanced I found two workarounds.
> 
> set xlabel "{/Symbol D}H@^{~\261__o}_f"
> 
> lx=0
> ly=-0.0
> set label 1 '{/Symbol D}H_f' at lx,ly font ",14" right
> set label 2 '{/Symbol=6 \306}' at lx,ly rotate by -45 offset char
> 0,0.6 left
> 
> The first one (xlabel) did not work with term pdfcairo enhanced and
> the second one (label) needs some other offsets.

All of the cairo terminals, and pretty much all terminals newer than
PostScript, work best with UTF8 encoding.  No need to change the
font to /Symbol, no need to construct special positioning.
Latex is another option of course.

  set encoding utf8
  set label 1  "ΔH_{f^⦵}"

and so on. 



> 
> Is there a better solution?
> 
> Kind reegards
> 
> Jörg