numpy中怎么向曲线图添加额外数据
时间: 2024-01-27 19:05:50 浏览: 59
要向 `numpy` 中的曲线图添加额外的数据,可以使用 `matplotlib` 库。具体步骤如下:
1. 导入 `numpy` 和 `matplotlib` 库:
```python
import numpy as np
import matplotlib.pyplot as plt
```
2. 创建数据集,例如:
```python
x = np.linspace(0, 10, 100)
y = np.sin(x)
```
3. 绘制曲线图:
```python
plt.plot(x, y)
```
4. 添加额外数据
可以使用 `plt.scatter` 函数在曲线上添加额外数据,例如:
```python
extra_x = np.array([2, 4, 6, 8])
extra_y = np.sin(extra_x)
plt.scatter(extra_x, extra_y, color='red')
```
将会在曲线上添加四个红色的点,其 x 坐标分别为 2,4,6,8。
完整的代码示例:
```python
import numpy as np
import matplotlib.pyplot as plt
x = np.linspace(0, 10, 100)
y = np.sin(x)
plt.plot(x, y)
extra_x = np.array([2, 4, 6, 8])
extra_y = np.sin(extra_x)
plt.scatter(extra_x, extra_y, color='red')
plt.show()
```
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