使用Python获得点和抛物线之间的最小距离可以通过以下步骤实现:
import numpy as np
import matplotlib.pyplot as plt
def parabola(x, a, b, c):
return a * x**2 + b * x + c
x0 = 2
y0 = 5
def min_distance(x, y, x0, y0):
distances = np.sqrt((x - x0)**2 + (y - y0)**2)
min_distance = np.min(distances)
return min_distance
x = np.linspace(-10, 10, 100)
y = parabola(x, 1, 0, 0)
plt.plot(x, y, label='Parabola')
plt.scatter(x0, y0, color='red', label='Point')
plt.annotate(f'Min Distance: {min_distance(x, y, x0, y0):.2f}', (x0, y0), textcoords="offset points", xytext=(0,10), ha='center')
plt.legend()
plt.xlabel('x')
plt.ylabel('y')
plt.title('Parabola and Point')
plt.grid(True)
plt.show()
完整代码如下:
import numpy as np
import matplotlib.pyplot as plt
def parabola(x, a, b, c):
return a * x**2 + b * x + c
def min_distance(x, y, x0, y0):
distances = np.sqrt((x - x0)**2 + (y - y0)**2)
min_distance = np.min(distances)
return min_distance
x0 = 2
y0 = 5
x = np.linspace(-10, 10, 100)
y = parabola(x, 1, 0, 0)
plt.plot(x, y, label='Parabola')
plt.scatter(x0, y0, color='red', label='Point')
plt.annotate(f'Min Distance: {min_distance(x, y, x0, y0):.2f}', (x0, y0), textcoords="offset points", xytext=(0,10), ha='center')
plt.legend()
plt.xlabel('x')
plt.ylabel('y')
plt.title('Parabola and Point')
plt.grid(True)
plt.show()
这样,我们就可以使用Python获得点和抛物线之间的最小距离,并通过可视化结果进行展示。
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