However, a simple two-dimensional density plot of this function immediately gives us a good feeling for the simple and beautiful symmetry contained in the original formula.

然而，该函数的简单二维密度绘图马上给我们一种清晰的感觉，那就是在原公式中包含的简单而漂亮的对称结构。

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If you want to plot this data in a two-dimensional space, as well as connect each data point with a line, you can use the gnuplot script shown in Listing 3.

如果希望在两维空间中绘制这些数据，并将每个数据点使用一条线连接起来，就可以使用清单3给出的gnuplot脚本。

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