Created
October 2, 2013 21:29
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scrolling barchart with chart.js
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| <!doctype html> | |
| <html> | |
| <head> | |
| <script src="Chart.js"></script> | |
| </head> | |
| <body> | |
| <canvas id="canvas" height="450" width="1000"></canvas> | |
| <script> | |
| var data = { | |
| labels: ["","","","","","","","","","","","","","","","","","","",""], | |
| datasets: [ | |
| { | |
| data: [10,15,5,10,12,6,19,10,5,7] | |
| } | |
| ] | |
| } | |
| options = { | |
| animation: false, | |
| barValueSpacing: 1 | |
| } | |
| var chart = new Chart(document.getElementById("canvas").getContext("2d")); | |
| chart.Bar(data, options); | |
| function getRandomInt(min,max) { | |
| return Math.floor(Math.random() * (max - min + 1) + min); | |
| } | |
| setInterval(function () { | |
| data.datasets[0].data.unshift(getRandomInt(0,20)); | |
| if(data.datasets[0].data.length >= 21) { | |
| data.datasets[0].data.pop(); | |
| } | |
| chart.Bar(data, options); | |
| }, 1000); | |
| </script> | |
| </body> | |
| </html> |
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not sure if anyone is still using this or if OP is still updating this, but using the above method will create a funky chart overlay every time you hover over any bar in the chart. If you modify it just a little bit to destroy the chart before creating a new one it will function exactly the same but you won't have any problems with hovering. If you take a little longer on it you can even use the update() method for a faster/cleaner implementation. Nevertheless the adding the destroy function would be an improvement: