This plugin adds a widget to display download statistics based on the <a href="https://wordpress.org/extend/plugins/wp-downloadcounter/" rel="ugc">Download Counter</a> 
plugin on your site. The sidebar widget will show a highly configurable chart based on the 
<a href="http://code.google.com/apis/chart/" rel="nofollow ugc">Google Chart API</a>. Furthermore it offers a dashboard widget that summarizes your 
downloads, to get information quick at a glance.
The plugin supports following chart types:
<ul>
<li>Bar (horizontal)</li>
<li>Pie </li>
<li>Pie 3D</li>
</ul>
You can include a chart of your downloads on a page or in a post using the downloadcounterchart-shortcode. 
Of course a download chart is includable in your theme. See <a href="https://wordpress.org/extend/plugins/wp-downloadcounter-chart/other_notes/" rel="ugc">extended documentation</a> 
for detailed explanations for that.
<h3>Usage</h3>
There are several ways to include a chart of your downloads on your site.
<h4>Page / Post (Shortcode)</h4>
<pre>[downloadcounterchart chart_type="pie" chart_width="490" chart_height="190" label_color="000000" label_size="11" sqlcondition="" bar_color="0066CC90" bar_height="-1" bg_color="FFFFFF00"]</pre>
Parameters:
<ul>
<li>chart_type – Type of the chart. Valid values: <code>bar_horizontal</code>, <code>pie</code> or <code>pie3d</code>.</li>
<li>chart_width – Width of the chart image in px. May be about the 2.5 times size of the height for a pie chart.</li>
<li>chart_height – Width of the chart image in px.</li>
<li>label_color – Hex color value for labels, optional with additional opacity value (e.g. 50% black = 00000050).</li>
<li>label_size – Font size of the labels.</li>
<li>sqlcondition – Optional SQL where statement, leave blank for all downloads.</li>
<li>bar_height – Bar chart only. You can explicitly set the bar height, but it may result in a chart that does not include 
all data, if the chart height is not big enough. Recommend to set <code>-1</code> for auto-sizing.</li>
<li>bg_color – Background color. Hex color value, optional with additional opacity value (e.g. transparent = FFFFFF00)</li>
</ul>
<h4>Theme</h4>
<pre>downloadcounterchart_img($chart_type, $chart_width, $chart_height, $label_color = '333333', $label_size = '11', $sqlcondition = '', $bar_color='', $bar_height='', $bg_color='')</pre>
Parameters:
see section above
Example:
<pre>if (function_exists('downloadcounterchart_img') && class_exists('DownloadCounterChartApi')){
 downloadcounterchart_img(DLC_CHART_PIE, 490, 190, '000000', '11', '', '0066CC', '-1', 'FFFFFF00');
}</pre>

Download Counter Chart

Visualization of your downloads based on the Download Counter plugin.

dyerware

This plugin allows you to easily insert charts into your blog, by way of shortcodes. While multipurpose, the chart system is intended to make it easy for posting detailed review measurements of some sort, such as poll data, video card comparisons, sports scores, etc. You specify the names of the devices being measured, the tests performed, and each device’s measurements for said test.
An admin settings page allows you to tailor many shortcode defaults, simplifying overall use.
The shortcode is supported on posts, pages, and in widgets.
Graphs scale to meet the size of the end-user client display, and support mobile displays such as those rendered by the wptouch plugin.
Charts supported are horizontal bar, stacked horizontal bar, vertical bar, stacked vertical bar, line graph, and pie. More can be added if desired.
PHP5 Required.
The shortcode format is:
[easychart argument=”value” …]
For a complete example and more detailed documentation, visit the plugin home page. If you do not understand these instructions, please ask questions in the comments section on the plugin home page. We will be more than happy to answer them.
Go here for up-to-date usage and examples: 
<a href="http://www.dyerware.com/main/products/easy-chart-builder/easy-chart-builder-plugin-for-wordpress.html" title="EasyChart Tutorial" rel="nofollow ugc">EasyChart Tutorial</a>

Easy Chart Builder for WordPress

This plugin allows you to easily create charts within your blog by use of shortcodes.

Download Counter Chart vs Easy Chart Builder for WordPress