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<title>RGraph: HTML5 Javascript charts library - Common issues</title>
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<a href="../index.html">RGraph: HTML5 Javascript charts library</a>
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<a href="index.html">Documentation</a>
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Common issues
</div>
<h1>RGraph: <span>HTML5 Javascript charts library</span> - Common issues</h1>
<script>
if (RGraph.isIE8()) {
document.write('<div style="background-color: #fee; border: 2px dashed red; padding: 5px"><b>Important</b><br /><br /> Internet Explorer 8 does not natively support the HTML5 canvas tag, so if you want to see the charts, you can either:<ul><li>Install <a href="http://code.google.com/chrome/chromeframe/">Google Chrome Frame</a></li><li>Use ExCanvas. This is provided in the RGraph Archive.</li><li>Use another browser entirely. Your choices are Firefox 3.5+, Chrome 2+, Safari 4+ or Opera 10.5+. </li></ul> <b>Note:</b> Internet Explorer 9 fully supports the canvas tag.</div>');
}
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<p>
These are some common issues that you should be aware of. If you're having trouble, you may want to look through these to see
if any apply to you or may be the source of your problem.
</p>
<a name="annotations"></a>
<h4>Annotations aren't saved when running locally in Mozilla Firefox</h4>
<p>
The solution here is to run the charts using a web server. At this time (March 2010) only Safari, Chrome and Opera
support saving annotations when running locally.
</p>
<a name="missing.text"></a>
<h4>Missing text in Google Chrome</h4>
<p>
Since one of the Chrome 4 dev releases there has been an issue with Google Chrome 4 and 5, asynchronous processing and not rendering
chart labels. This has been remedied by simply not using asynchronous processing. Because of the tag placement on the front page,
the effect shouldn't be apparent. Other browsers (eg Firefox, Safari, Opera, MSIE) are fine.
</p>
<p>
<b>Update:</b> Currently, (roughly March 2011), the missing text issue appears to be much less evident, if not resolved entirely.
</p>
<a name="firefox.tooltips.clipboard"></a>
<h4>Firefox, tooltips and the clipboard</h4>
<p>
Firefox, tooltips and using the clipboard is a little convoluted. To copy the text in a tooltip you must do the following:
</p>
<ol>
<li style="margin-top: 0">Select the text you want with the mouse.</li>
<li style="margin-top: 0">Press CTRL+C (it may be a different key combination if you're not using Windows) to copy the text to the clipboard.</li>
</ol>
<p>
<b>Note:</b> Recent versions of Firefox 4 (from beta 6 onwards) appear to work as expected, and you can copy text with the mouse as normal.
</p>
<h4>Shadows in Google Chrome and the line chart</h4>
<p>
Shadows in recent versions of Google Chrome are somewhat broken. Firefox, MSIE, Opera and Safari are fine. The reason for this
error is a combination of factors it seems - shadow blurring and line width. Fixes have been added to allow shadow blurring and
a 1 pixel linewidth, though some chart types may still be affected.
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