可以使用各种各样的图表，包括基本的条形图、饼形图以及其他一些复杂的变体（如散点图、块状直方图和网状图）。

A wide variety of chart types is available, including the basic bar and pie charts and more esoteric varieties, such as scatterplots, block histograms, and networks.

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在读入步骤1的饼图后，将在步骤1的图表中绘制由三角形顶点文件指定的多边形。

After reading in the Step 1 pie chart, polygons specified by the triangle vertices file are drawn on the Step 1 chart.

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