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| 21 | <title>RGraph: Javascript charts and graph library - Common issues</title> |
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| 22 | |
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| 23 | <meta name="keywords" content="rgraph html5 canvas chart docs common issues" /> |
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| 24 | <meta name="description" content="RGraph: Javascript charts and graph library - Documentation about common issues" /> |
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| 26 | <meta property="og:title" content="RGraph: Javascript charts and graph library" /> |
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| 27 | <meta property="og:description" content="A charts library based on the HTML5 canvas tag" /> |
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| 65 | <div id="breadcrumb"> |
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| 66 | <a href="../index.html">RGraph: Javascript charts and graph library</a> |
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| 67 | > |
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| 68 | <a href="index.html">Documentation</a> |
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| 69 | > |
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| 70 | Common issues |
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| 71 | </div> |
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| 72 | |
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| 73 | <h1>RGraph: <span>Javascript charts and graph library</span> - Common issues</h1> |
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| 74 | |
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| 75 | <script> |
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| 76 | if (RGraph.isIE8()) { |
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| 77 | 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. Click <a href="http://support.rgraph.net/message/rgraph-in-internet-explorer-9.html" target="_blank">here</a> to see some screenshots.</div>'); |
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| 78 | } |
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| 82 | <span style="background-color: #efe; padding: 3px; border: 1px solid black; border-radius: 15px; padding-left: 10px; padding-right: 10px"> |
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| 83 | <b> |
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| 84 | Join the support forum: |
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| 85 | <a href="http://support.rgraph.net">http://support.rgraph.net</a> |
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| 86 | </b> |
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| 87 | </span> |
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| 88 | </div> |
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| 89 | |
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| 90 | <p> |
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| 91 | 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 |
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| 92 | if any apply to you or may be the source of your problem. |
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| 93 | </p> |
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| 94 | |
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| 95 | <a name="tooltips"></a> |
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| 96 | <h4>Tooltips not working as of the October 2010 release</h4> |
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| 97 | |
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| 98 | <p> |
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| 99 | If you're specifying numbers instead of strings for your tooltips, they will not work any more. Simply cast them to |
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| 100 | strings, like this: |
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| 101 | </p> |
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| 102 | |
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| 103 | <pre class="code"> |
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| 104 | <span style="color: red"> |
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| 105 | // This WILL NOT work any more |
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| 106 | myBar.Set('chart.tooltips', [56, 67, 53]); |
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| 107 | </span> |
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| 108 | <span style="color: green"> |
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| 109 | // Do any of these instead |
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| 110 | myBar.Set('chart.tooltips', ['56', (67).toString(), String(53)]);</span> |
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| 111 | </pre> |
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| 112 | |
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| 113 | <a name="annotations"></a> |
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| 114 | <h4>Annotations aren't saved when running locally in Mozilla Firefox</h4> |
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| 115 | |
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| 116 | <p> |
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| 117 | The solution here is to run the charts using a web server. At this time (March 2010) only Safari, Chrome and Opera |
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| 118 | support saving annotations when running locally. |
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| 119 | </p> |
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| 120 | |
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| 121 | <a name="missing.text"></a> |
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| 122 | <h4>Missing text in Google Chrome</h4> |
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| 123 | |
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| 124 | <p> |
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| 125 | Since one of the Chrome 4 dev releases there has been an issue with Google Chrome 4 and 5, asynchronous processing and not rendering |
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| 126 | chart labels. This has been remedied by simply not using asynchronous processing. Because of the tag placement on the front page, |
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| 127 | the effect shouldn't be apparent. Other browsers (eg Firefox, Safari, Opera, MSIE) are fine. |
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| 128 | </p> |
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| 129 | |
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| 130 | <p> |
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| 131 | <b>Update:</b> Currently, (roughly March 2011), the missing text issue appears to be much less evident, if not resolved entirely. |
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| 132 | </p> |
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| 133 | |
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| 134 | <a name="firefox.tooltips.clipboard"></a> |
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| 135 | <h4>Firefox, tooltips and the clipboard</h4> |
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| 136 | |
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| 137 | <p> |
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| 138 | Firefox, tooltips and using the clipboard is a little convoluted. To copy the text in a tooltip you must do the following: |
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| 139 | </p> |
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| 140 | |
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| 141 | <ol> |
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| 142 | <li style="margin-top: 0">Select the text you want with the mouse.</li> |
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| 143 | <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> |
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| 144 | </ol> |
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| 145 | |
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| 146 | <p> |
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| 147 | <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. |
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| 148 | </p> |
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| 149 | |
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| 150 | <h4>Shadows in Google Chrome and the line chart</h4> |
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| 151 | |
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| 152 | <p> |
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| 153 | Shadows in recent versions of Google Chrome are somewhat broken. Firefox, MSIE, Opera and Safari are fine. The reason for this |
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| 154 | error is a combination of factors it seems - shadow blurring and line width. Fixes have been added to allow shadow blurring and |
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| 155 | a 1 pixel linewidth, though some chart types may still be affected. |
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| 156 | </p> |
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| 157 | |
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