How to add delays between frames and how to save gif file in Full screen mode?

Question

I am a somehow new Python user, and completely new related to matplotlib environment. In the following code, I have managed to create an animation, in which I read some csv files, and I plot animated results either by barplots ot time domain ones. The code is following:

import csv
import matplotlib.pyplot as plt
import numpy as np
import matplotlib
from matplotlib.animation import FuncAnimation, writers, ImageMagickFileWriter
'''



fig, axs = plt.subplots(2,2) #subplots is a module that returns 1 figure with a list of two axes (due to the two in the arguments) 


my_data =np.genfromtxt('1b. freq (time domain).csv', delimiter=',',skip_header=1)
my_data_bar =np.genfromtxt('1a.powers_loads_generators (bar_plots).csv', delimiter=',',skip_header=1)

my_data_2=np.genfromtxt('2b.angles (time domain).csv', delimiter=',',skip_header=1)
my_data_bar_2=np.genfromtxt('2a.torques (bar_plots).csv', delimiter=',',skip_header=1)



axs[0][1].set_ylim(49.5, 50.5)
axs[0][1].set_xlim(0, 10)

axs[0][1].set_xlabel('Time (Seconds)')
axs[0][1].set_ylabel('Frequency (Hz)')

frequency_lines = axs[0][1].plot([],[]) # tuple of lines. 

######################################################################################################################################################################################################################    


axs[0][0].set_xlim(0, 400) 


testNames=('G1', 'G2', 'WG1', 'WG3','TOTG','LDA','LDB','LDC','TOTLD')


axs[0][0].invert_yaxis()  # labels read top-to-bottom
axs[0][0].set_xlabel('Active Power (MW)')


bar_containers= axs[0][0].barh(range(9),my_data_bar[0,1:], align='center', height=0.5, tick_label=testNames) 
bar_containers[4].set_color('r')
bar_containers[8].set_color('r')       


######################################################################################################################################################################################################################   

axs[1][1].set_ylim(0, 100)
axs[1][1].set_xlim(0, 10)

axs[1][1].set_xlabel('Time (Seconds)')
axs[1][1].set_ylabel('Rotor Angles Difference (rads)')

angle_lines = axs[1][1].plot([],[]) 

######################################################################################################################################################################################################################    


axs[1][0].set_xlim(0,1) 
testNames=('Tmech1', 'Tel1', 'Tmech2', 'Tel2')


axs[1][0].invert_yaxis()  
axs[1][0].set_xlabel('Torques (pu)')





bar_containers2= axs[1][0].barh(range(4),my_data_bar_2[0,1:], align='edge', height=0.5, tick_label=testNames)  #arguments list of position and height  and returns a container   



######################################################################################################################################################################################################################    


totFrames=len(my_data)





def update(index):#receive a variable to understand which frame  we take

        print ("Update",index)
        frequency_lines[0].set_data(my_data[:index+1, :].T) 
        angle_lines[0].set_data(my_data_2[:index+1,0],my_data_2[:index+1,4])    


        for i, b in enumerate(bar_containers):
            b.set_width(my_data_bar[index,i+1])

        for i, b in enumerate(bar_containers2):
            b.set_width(my_data_bar_2[index,i+1])   


ani = FuncAnimation(fig, update, frames = range(totFrames), interval=1) #how many ms are between the frames
ani.save('visualization.gif', writer='imagemagick')

My questions are: 1) How I could add some delays between frames? For instance I would like the interval variable in the FuncAnimation command to be a variable. For Frames 0-100 the time delay, I would like to be 1, for Frames 100-200, I would like the delay between the frames to be 600 (so as to focus into these time zone), and from frame number 200 - totFrames the delay between frames to be 1 again.

2) When I save the .ani, I end up with a .gif file which the legends and labels crowding each other. However, if I maximize the animation in full screen mode from Python then the subplots in Python are looking fine. How I could save the animation file,in full screen, so as the .gif file to have subplots that do not intesect each other?

Thank you in advance

the Python animation when full screen is used can be seen here: https://i.stack.imgur.com/gx7Ps.png the squeezed stored .gif file can be seen here: https://i.stack.imgur.com/zbrBu.png — StF, Sep 22 '19 at 13:40
2) You need to change the figure size as in [this question](https://stackoverflow.com/questions/332289/how-do-you-change-the-size-of-figures-drawn-with-matplotlib); 1) There is no dedicated API for changing the interval in the fly, but you can still manipulate the underlying event source as shown in [this question](https://stackoverflow.com/questions/41882736/can-i-change-the-interval-of-a-previously-created-matplotlib-funcanimation) — ImportanceOfBeingErnest, Sep 22 '19 at 13:49

How to add delays between frames and how to save gif file in Full screen mode?

0 Answers0