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HTML5之10 __使用 Canvas API创建 热点图

黄舟
Release： 2017-02-18 14:47:03
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使用Canvas API 可以创建许多应用：  图形、图表、图片编辑,  其中最奇妙的一个应用是修改或覆盖已有内容。 最流行的覆盖图被称为热点图。 热点图可以用在城市地图上来标记交通路况， 或者显示风暴的活动情况。

在地图上只需要将canvas 叠放在地图上显示即可。 实际上就是用  canvas 覆盖地图， 然后再基于相应的活动数据绘制出不同的热度级别。 

以下提供一个示例.



  HTML5 Canvas Example
  
  
HTML5 Canvas Example

  
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Related labels：
HTML5，API创建，热点图
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