[英]How to draw rectangle over set of points?
All of my attempts failed. 我所有的尝试都失败了。 I tried to draw rectangle over set of points with pyplot but I keep getting different errors.
我试图用pyplot在点集上绘制矩形,但我不断遇到不同的错误。 Can someone help?
有人可以帮忙吗? I need to add rectangle of size width = 4 and height= 2sqrt(3)
我需要添加宽度为4且高度为2sqrt(3)的矩形
import matplotlib.pyplot as plt
import matplotlib.patches as patches
def main():
print("hello")
if __name__ == "__main__":
x = []
y = []
for k in range(30):
for l in range(30):
x.append(4*k + 2*(l % 2))
y.append(2*l*3**(1/2))
rect = patches.Rectangle((0,0),4,2*3**(1/2),linewidth=1,edgecolor='b',facecolor='none')
plt.plot(x, y, 'ro')
plt.axis([0, 10, 0, 10])
#plt.add_patch(rect)
plt.show()
add_patch
is an axes
method, not something directly under pyplot
. add_patch
是一个axes
方法,而不是直接在pyplot
下的pyplot
。 Just change your commented line to: 只需将您的评论行更改为:
plt.gca().add_patch(rect)
gca()
gets the current active axes in pyplot. gca()
获取pyplot中的当前活动轴。
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