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<b class="current">Inserting equations in Powerpoint presentations</b>
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<div><h1 id="a0000000264">A.2 Inserting equations in Powerpoint presentations</h1>
<p> <a name="a0000001776" id="a0000001776"></a><a name="a0000001777" id="a0000001777"></a> </p><p>The two tools most commonly used for presenting talks<a name="a0000001778" id="a0000001778"></a> – Microsoft <i class="it">Powerpoint</i><a name="a0000001779" id="a0000001779"></a> and OpenOffice<a name="a0000001780" id="a0000001780"></a> <i class="it">Impress</i> – have limited facilities for importing text rendered in latex 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 latex. 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 latex 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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