示例：2D 绘图中的参数化曲线

绘图 > 极坐标图 > 示例：2D 绘图中的参数化曲线

示例：2D 绘图中的参数化曲线

绘制曲线点的图像，这些曲线的坐标为一个或多个参数的函数。

一个参数

1. 使用 sin 函数定义关于参数 a 的函数 x 和 y：

2. 根据 x 绘制 y。对于参数曲线，将在某一算法确定的值域范围内绘制 500 个点。更改绘制点的数量时，值域范围也会随之改变。

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两个参数

1. 设置数据点的数量。

2. 定义每个数据点处的角度和半径。

3. 定义参数化的坐标矢量。

4. 使用 augment 函数将以上值记录在矩阵中以便重复使用，或将其写入外部文件以用于其他应用中。

5. 使用 stack 函数向矩阵添加标题。

6. 根据 x 绘制 y。可通过更改值域变量 i 的定义来更改绘图点。

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7. 将以上曲线作为极坐标图（非参数）显示。

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