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<b class="current">Inserting Equations in Powerpoint Presentations</b>
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<div><h1 id="a0000000234">A.2 Inserting Equations in Powerpoint Presentations</h1>
<p> <a name="a0000001652" id="a0000001652"></a><a name="a0000001653" id="a0000001653"></a> </p><p>The two tools most commonly used for presenting talks<a name="a0000001654" id="a0000001654"></a> – Microsoft <i class="it">Powerpoint</i><a name="a0000001655" id="a0000001655"></a> and OpenOffice<a name="a0000001656" id="a0000001656"></a> <i class="it">Impress</i> – have limited facilities for importing text rendered in L<sup style="font-variant:small-caps; margin-left:-0.3em">a</sup>T<sub style="text-transform:uppercase; margin-left:-0.2em">e</sub>X into slides. <i class="it">Powerpoint</i> does include its own <i class="it">Equation Editor</i>, but its output is considerably less professional than that produced by L<sup style="font-variant:small-caps; margin-left:-0.3em">a</sup>T<sub style="text-transform:uppercase; margin-left:-0.2em">e</sub>X. This can prove a frustration for anyone who works in a field with notation which makes use of non-standard characters, but especially for those who work in mathematical and equation-centric disciplines. </p><p>It is possible to import graphic images into <i class="it">Powerpoint</i>, but it cannot read images in PostScript format, the format in which L<sup style="font-variant:small-caps; margin-left:-0.3em">a</sup>T<sub style="text-transform:uppercase; margin-left:-0.2em">e</sub>X usually produces its output. PyXPlot’s <tt class="tt">gif</tt> and <tt class="tt">png</tt> terminals provide a fix for this problem, as the following example demonstrates: </p><pre>
set term transparent noantialias gif
set term dpi 300
set output 'equation.gif'
set multiplot
# Render the Planck blackbody formula in LaTeX
set textcolour yellow
text '$B_\nu = \frac{8\pi h}{c^3} \
\frac{\nu^3}{\exp \left( h\nu / kT \right) -1 }$' at 0,0
text 'The Planck Blackbody Formula:' at 0 , 0.75
</pre><p>The result is a <tt class="tt">gif</tt> image of the desired equation, with yellow text on a transparent background. This can readily be imported into <i class="it">Powerpoint</i> and re-scaled to the desired size. </p></div>
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