Padding for superscript and subscript axis labels in gnuplot

By default gnuplot doesn't align superscripts and subscripts:

T_c^{/Symbol \245}

But, that leaves an ugly space between the symbol and superscript. You can force alignment with an @ character:

T@_c^{/Symbol \245}

 This works fine for standard characters, but for slanted variables, the align character makes the superscript overlap. To fix this we insert a partial before the infty symbol in the superscript. To do this we combine two text effects, blank characters &{a} and font size scaling {/* }:

T@_c^{{/*0.5 &{c}}{/Symbol \245}}

To give the desired result. You can change the factor 0.5 to whatever you need, with 1.0 being full character width.

Gnuplot PDF+Latex files

To create a pdf file from gnuplot with latex text do the following:

In the plot use the terminal:

set terminal epslatex

Then convert the eps to a pdf file.

Include the figure using

\input{figure.tex}

Printing variables from gnuplot to a file

To output variables such as fitting parameters from gnuplot use.

set fit errorvariables # creates a_err type variables for fitting errors

set print "tmp.dat"

print a,a_err,b,b_err