当您的绘图区上需要一个以上的图表类型时，名称作为标识符。
The name is the identifier when you want to have more than one plot type on your chart.
事件处理程序可以附加到一个图表的单独绘图区，如清单6所示。
Event handlers can be attached to individual plots of a chart, as shown in Listing 6.
两个绘图区可以使用相同的水平轴，但拥有不同的垂直轴。
You could have two plots that use the same horizontal axis but have different vertical axes.
也可以通过添加第二个绘图区并将轴附加到它来创建带有超过两个轴的图表。
You can also make charts with more than two axes by adding a second plot and attaching axes to it.
例如，轴，标识和网格线都被柔和了，以使绘图区的数据更加突出。
For example, axes, tick marks, and gridlines have been subdued to allow the data in the plot area to stand out more.
然后，它使用一个映射填充该区域，这个映射是用于对每个笔触的绘图区域着色的图像缓冲区。
It then fills the area with a mapping, which is an image buffer used to color up the painting area of each stroke.
缺省情况下，图表控件会为值轴自动选择一个最小值和最大值，使得所有的数据点均可见，并且在绘图区周围留下一些空白。
The Chart control by default will choose an automatic minimum and maximum for a value axis that will make all the data points visible and leave a little bit of margin around the plot area.
帧缓冲区支持提高了绘图的速度和整体性能。
Framebuffer support speeds both drawing and overall performance.
帧缓冲区支持提高了绘图的速度和整体性能。
Framebuffer support speeds both drawing and overall performance.
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