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<p>The first known line charts are usually credited to Francis Hauksbee, Nicolaus Samuel Cruquius, Johann Heinrich Lambert and William Playfair.Other common charts are:</p>

<p><big> Less-common charts </big></p>
<p>Examples of less common charts are:</p>

<p>This gallery shows:<br/>
* A <a href="page.php?w=bubble_chart">bubble chart</a> is a two-dimensional scatterplot where a third variable is represented by the size of the points.<br/>
* A <a href="page.php?w=Pie_chart">polar area diagram</a>, sometimes called a Coxcomb chart, is an enhanced form of pie</p><p>
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