I want my animation only to show the most previous point, and I believe that I have to adjust something around this line: plt.gca().cla()
Can anyone tell me what I am doing wrong? In my animation, all the points stay visible, while I only want to show the most previous points. Any suggestions?
This is my code:
import numpy as np
import pandas as pd
import seaborn as sns
import matplotlib
import matplotlib.pyplot as plt
title = 'Occ'
x = np.array(df.x)
y = np.array(df.y)
Writer = animation.writers['ffmpeg']
writer = Writer(fps = 4, bitrate = 1800)
fig = plt.figure(figsize = (12, 8))
def animate(i):
plt.gca().cla()
data = df.iloc[:int(i + 1)] # select data range
p = sns.scatterplot(x = 'x', y = 'y', hue = 'id', data = data, s = 200, alpha = 0.5)
p.tick_params(labelsize = 17)
plt.setp(p.lines, linewidth = 7)
plt.xlim(0, 500)
plt.ylim(0, 500)
plt.xlabel('X', fontsize = 20)
plt.ylabel('Y', fontsize = 20)
plt.title('Occ', fontsize = 20)
ani = matplotlib.animation.FuncAnimation(fig, animate, frames = len(df), repeat = True, blit=False)
ani.save('Occ.mp4', writer = writer)
The line
data = df.iloc[:int(i + 1)] # select data range
select all the rows from 0
to i+1
, therefore you are showing a growing number of points at each frame. If you want to show only the current point, you should do:
data = df.iloc[i] # select data range
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