matplotlib, Python samples, page 1

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1	Py-fig-Scater Python program, Drawing animated GIFs with matplotlib

2	Py-Scater-animate Python program, Drawing Scater animated GIFs with matplotlib

matplotlib

Py-fig-Scater Python program, Drawing animated GIFs with matplotlib

Py-fig-Scater Python program, Drawing animated GIFs with matplotlib
how to draw animated GIFs with Python using matplotlib. I tried the code shown here on a Ubuntu machine with ImageMagick installed. ImageMagick is required for matplotlib to render animated GIFs with the save method.
A couple of things to note:

The scatter part of the graph is unchanging; the line is changing.
The X axis title is changing in each frame

Create a new Python project In Visual Studio 2022

the Microsoft Visual Studio (... or 2019 or 2022) is a powerful IDE for Python language
Open/Run Microsoft Visual Studio 2022

To view Python templates, search for python.

Select the Python Application template, and select Next.

Create a new Python project In Visual Studio 2022
        On the Configure your new project screen -   (specify a name and file location for the project, and then select Create)
        Project name: Py-fig-Scater
        Location: C:\Users\...\source\repos    (default location for Visual Studio 2022)

The new project opens in Visual Studio 2022 - (Visual Studio 2022 Compiler - IDE, to compile Python project / file )

The Visual Studio Solution Explorer window shows the project structure

Python Project Properieties - Py-fig-Scater

Projct Folder: C:\Users\...\source\repos\Py-fig-Scater
Startup File: Py_fig_Scater.py
Project file: Py-fig-Scater.sln

Download Python Project : Py-fig-Scater.zip - (108 KB zip file) Download
Project consist of:
One Python Form - (Py_fig_Scater.py )

Download Python Project : Py-fig-Scater.zip - (108 KB zip file) Download

Install numpy, matplotib and sys modules in Python on Windows Operating System, Using Command Prompt

1- Install numpy module in Python on Windows Operating System, Using Command Prompt

      Step 1 - Run the Command Prompt on Windows Operating System:

               Command Prompt is an application on most Windows computers that directly communicates with the operating system
               How to open the Command Prompt: Press the Windows key + r. In the Run box, type cmd, and then click Ok.

    Step 2 - install numpy:
                In the Command prompt, use the following pip command to install the matplotlib library
                pip install numpy

2- Install matplotlib module in Python on Windows Operating System, Using Command Prompt

pip install matplotlib

3- Install sys module in Python on Windows Operating System, Using Command Prompt

pip install sys

Source Code of Python Project - Py-fig-Scater :

Download this Source Code at python file: Py_fig_Scater.py - (1.31 KB Python file) download

Continue

Py_fig_Scater.py Python Code, Drawing animated GIFs with matplotlib


	import sys import numpy as np import matplotlib.pyplot as plt from matplotlib.animation import FuncAnimation fig, ax = plt.subplots() fig.set_tight_layout(True) # Query the figure's on-screen size and DPI. Note that when saving the figure to # a file, we need to provide a DPI for that separately. print('fig size: {0} DPI, size in inches {1}'.format( fig.get_dpi(), fig.get_size_inches())) # Plot a scatter that persists (isn't redrawn) and the initial line. x = np.arange(0, 20, 0.1) ax.scatter(x, x + np.random.normal(0, 3.0, len(x))) line, = ax.plot(x, x - 5, 'r-', linewidth=2) def update(i): label = 'timestep {0}'.format(i) print(label) # Update the line and the axes (with a new xlabel). Return a tuple of # "artists" that have to be redrawn for this frame. line.set_ydata(x - 5 + i) ax.set_xlabel(label) return line, ax 1- To Save Drawing animated GIFs with matplotlib Add these Code Lines if __name__ == '__main__': # FuncAnimation will call the 'update' function for each frame; here # animating over 10 frames, with an interval of 200ms between frames. anim = FuncAnimation(fig, update, frames=np.arange(0, 10), interval=200) anim.save('line.gif', dpi=80, writer='imagemagick') 2- To Show Drawing animated GIFs with matplotlib Add these Code Lines if __name__ == '__main__': # FuncAnimation will call the 'update' function for each frame; here # animating over 10 frames, with an interval of 200ms between frames. anim = FuncAnimation(fig, update, frames=np.arange(0, 10), interval=200) # plt.show() will just loop the animation forever. plt.show()

Debug of Py-fig-Scater project, 0 Errors

Output of Py-fig-Scater project, Drawing animated GIFs with matplotlib or Animline Seaborn Line:

1- To Save Drawing animated GIFs with matplotlib - name of Saved GIF File - 'line.gif', (Save at folder - C:\Users\...\source\repos\Py-fig-Scater\Py-fig-Scater)

2- To Show Drawing animated GIFs with matplotlib

Py-Scater-animate Python program, Drawing Scater animated GIFs with matplotlib

Py-Scater-animate Python program, Drawing Scater animated GIFs with matplotlib

Create a new Python project In Visual Studio 2022

the Microsoft Visual Studio (... or 2019 or 2022) is a powerful IDE for Python language
Open/Run Microsoft Visual Studio 2022

To view Python templates, search for python.

Select the Python Application template, and select Next.

Create a new Python project In Visual Studio 2022
        On the Configure your new project screen -   (specify a name and file location for the project, and then select Create)
        Project name: Py-Scater-animate
        Location: C:\Users\...\source\repos    (default location for Visual Studio 2022)

The new project opens in Visual Studio 2022 - (Visual Studio 2022 Compiler - IDE, to compile Python project / file )

The Visual Studio Solution Explorer window shows the project structure

Python Project Properieties - Py-Scater-animate

Projct Folder: C:\Users\...\source\repos\Py-Scater-animate
Startup File: Py_Scater_animate.py
Project file: Py-Scater-animate.sln

Download Python Project : Py-Scater-animate.zip - (15.3 KB zip file) Download
Project consist of:
One Python Form - (Py_Scater_animate.py )

Download Python Project : Py-Scater-animate.zip - (15.3 KB zip file) Download

Install numpy and matplotib modules in Python on Windows Operating System, Using Command Prompt

1- Install numpy module in Python on Windows Operating System, Using Command Prompt

pip install numpy

2- Install matplotib module in Python on Windows Operating System, Using Command Prompt

pip install matplotlib

Source Code of Python Project - Py-Scater-animate :

Download this Source Code at python file: Py_Scater_animate.py - (686 Byte Python file) download

Continue

Py_Scater_animate.py Python Code, Drawing Scater animated GIFs with matplotlib

# Animated scatter saved as GIF

import matplotlib.pyplot as plt

import numpy as np

import matplotlib.animation as animation

fig, ax = plt.subplots()

ax.set_xlim([0, 10])

scat = ax.scatter(1, 0)

x = np.linspace(0, 10)

def animate(i):

scat.set_offsets((x[i], 0))

return (scat,)

ani = animation.FuncAnimation(fig, animate, repeat=True, frames=len(x) - 1, interval=50)

# To save the animation using Pillow as a gif

writer = animation.PillowWriter(fps=15,

metadata=dict(artist='Me'),

bitrate=1800)

ani.save('scatter.gif', writer=writer)

# plot / show scatter.gif

plt.show()

Debug of Py-Scater-animate project, 0 Errors

Output of Py-Scater-animate project, Drawing Scater animated GIFs with matplotlib:

Python matplotlib Pages - 1 2

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