使用Python的Matplotlib,如何将特定点的注释更新与使用FuncAnimation绘制的数据集对齐?

我认为ax和plot的混合是问题所在,我用对象风格重写了它,并修复了代码。

fig, ax = plt.subplots()
ax.set_xlim(0,205)
ax.set_ylim(0,100)
line, = ax.plot(0,50)
ax.set_title('A Cool Title')
ax.set_xlabel('Time in Seconds')
ax.set_ylabel('Value')


def init():
    line.set_data([], [])
    return line,

def animate(n):
    line, = ax.plot(x_data[:n], y_data[:n], color='b', marker='o')
    ax.annotate(annotations[n],(x_data[n],y_data[n]))
    updated_score = mpatches.Patch(color='b', label=y_data[n])
    ax.legend(handles=[updated_score])
    return line,

animation = FuncAnimation(fig, animate, frames=len(x_data), interval=500, repeat=False)
# animation.save('line_legend_sync_ani.gif', writer='pillow')
plt.show()

请记住,切片时熊猫不包括最后一个值,因此在这一行中 plt.plot(x_data[:n+1], y_data[:n+1])

import numpy as np
import matplotlib.pyplot as plt
from matplotlib.animation import FuncAnimation
from matplotlib import style
import matplotlib.patches as mpatches

style.use('ggplot')

x_data = [1,5,7,9,11,12,14,15,27,29,37,39,45,47,52,53,57,58,61,62,66,80,82,83,84,85,90,91,93,96,98,105,109,110,111,113,114,116,117,120,122,123,127,134,136,138,140,141,144,160,161,162,165,174,176,179,183,184,185,186,190,191,192,193,194,195,199,200,204]
y_data = [50,55,40,30,31,20,21,18,25,21,15,18,20,24,27,30,32,35,37,38,30,11,13,10,10,14,16,18,19,17,14,9,9,4,5,5,6,5,7,3,6,8,10,13,15,12,10,13,8,4,3,5,4,5,7,6,4,8,10,12,10,12,12,12,12,15,17,18,18]
annotations = ['','','Pasted Value','Cut Value','','Pasted Cut Value','','Abnormal Pause','','Abnormal Pause','Out of Order Field Interaction','','','','','','','','','','Window Exit','Window Entry','','Pasted Value','Out of Order Field Interaction','','','Irregular Typing Cadence','','Irregular Typing Cadence','Abnormal Pause','Irregular Typing Cadence','Out of Order Field Interaction','Value Manipulation','','Out of Order Field Interaction','','Value Manipulation','','Value Manipulation','','','','','','','','','Window Exit','Window Entry','Pasted Value','','Value Manipulation','','','Value Manipulation','Value Manipulation','','','','Copied Value','','Frustration - Repeat Paste','Frustration - Repeat Paste','Frustration - Repeat Paste','','','','']
print(len(x_data))
print(len(y_data))
print(len(annotations))

fig, ax = plt.subplots()
ax.set_xlim(0,205)
ax.set_ylim(0,100)
line, = ax.plot(0,50)

def init():
  line.set_data([], [])
  return line,

def animate(n):
  line, = plt.plot(x_data[:n+1], y_data[:n+1], color='b', marker='o')
  ax.annotate(annotations[n],(x_data[n],y_data[n]))
  updated_score = mpatches.Patch(color='b', label=y_data[n])
  ax.legend(handles=[updated_score])
  return line,

animation = FuncAnimation(fig, animate, frames=len(x_data), interval=500)

plt.title('A Cool Title')
plt.xlabel('Time in Seconds')
plt.ylabel('Value')

plt.show()

在此处检查结果: https://repl.it/@JuanJavier1/A-Cool-Title