设备像素比

¥Device Pixel Ratio

默认情况下，图表的画布将使用 1:1 像素比，除非物理显示器具有更高的像素比（例如 Retina 显示器）。

¥By default, the chart's canvas will use a 1:1 pixel ratio, unless the physical display has a higher pixel ratio (e.g. Retina displays).

对于将图表转换为位图或打印到更高 DPI 介质的应用，可能需要以比默认值更高的分辨率渲染图表。

¥For applications where a chart will be converted to a bitmap, or printed to a higher DPI medium, it can be desirable to render the chart at a higher resolution than the default.

将 devicePixelRatio 设置为 1 以外的值将强制画布大小相对于容器大小按该数量缩放。屏幕上应该没有明显的差异；只有在缩放或打印图片时才能看到差异。

¥Setting devicePixelRatio to a value other than 1 will force the canvas size to be scaled by that amount, relative to the container size. There should be no visible difference on screen; the difference will only be visible when the image is zoomed or printed.

配置选项

¥Configuration Options

命名空间：options

¥Namespace: options

名称	类型	默认	描述
devicePixelRatio	number	window.devicePixelRatio	覆盖窗口的默认 devicePixelRatio。