The matplotlib Library
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The slides I was using when delivering a meetup about the matplotlib library. More info about that meetup can be found at https://www.meetup.com/life-michael/events/271738271/
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![© 2008 Haim Michael 20150729
The show Function
Once completed, calling show will draw the diagram on the
screen.
import matplotlib.pyplot as plt
import numpy as np
plt.plot([1,2,3,4], [4,3,2,1], label='linear')
plt.legend()
plt.show()](https://image.slidesharecdn.com/matplotlibmeetup20201014-201016020502/85/The-matplotlib-Library-5-320.jpg)
![© 2008 Haim Michael 20150729
The add_subplot Method
import matplotlib.pyplot as plt
import numpy as np
fig = plt.figure()
ax = fig.add_subplot()
ax.scatter([1,2,3,4,5],[4,3,7,8,20])
plt.show()](https://image.slidesharecdn.com/matplotlibmeetup20201014-201016020502/85/The-matplotlib-Library-9-320.jpg)
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Introduction to Pattern Matching in Java [Free Meetup]![Introduction to Pattern Matching in Java [Free Meetup]](https://cdn.slidesharecdn.com/ss_thumbnails/javapatternmatchingmeetup20250304-250304131144-9588cdc2-thumbnail.jpg?width=560&fit=bounds)
Introduction to Pattern Matching in Java [Free Meetup]Haim Michael This presentation was prepared for a meetup that focused on Pattern Matching in Java. You can find more information about that meetup at https://www.meetup.com/lifemichael/events/302670923. You can find the video of that meetup at https://youtu.be/ITNi1On_KI8
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Mastering The Collections in JavaScript [Free Meetup]![Mastering The Collections in JavaScript [Free Meetup]](https://cdn.slidesharecdn.com/ss_thumbnails/javascriptcollections20250204-250205161759-5a1365e2-thumbnail.jpg?width=560&fit=bounds)
Mastering The Collections in JavaScript [Free Meetup]Haim Michael This is the slides I was using when delivering my talk at the JavaScript Collections meetup, that took place on February 4th. More info about that meetup can be found at https://www.meetup.com/lifemichael/events/304737983. You can find the video at https://youtu.be/ZsguwdfqFtc
Beyond Java - Evolving to Scala and Kotlin
Beyond Java - Evolving to Scala and KotlinHaim Michael These are the slides that I was using when delivering the meetup 'Beyond Java: Evolving to Scala and Kotlin'. More information about this meetup can be found at https://www.meetup.com/lifemichael/events/304737713. You can find the video at https://youtu.be/DxYBTOnNUDI.
Stay tuned with the development of the Java programming language by subscribing to the Java Monthly Review at https://www.linkedin.com/newsletters/java-monthly-review-7196786144515100674/
Join the 'Scala Developers' group on Facebook at https://www.facebook.com/groups/203788593023488
Join the 'Java Developers' group on Facebook at https://www.facebook.com/groups/416382100240052
Join the 'Kotlin Developers' group on Facebook at https://www.facebook.com/groups/1977843402436668
JavaScript Promises Simplified [Free Meetup]![JavaScript Promises Simplified [Free Meetup]](https://cdn.slidesharecdn.com/ss_thumbnails/promises20241001-241001092110-ceaab0a2-thumbnail.jpg?width=560&fit=bounds)
JavaScript Promises Simplified [Free Meetup]Haim Michael This is the presentation that I was using when delivering the meetup 'JavaScript Promise Simplified'. This presentation focuses on the use of the Promise constructor function. It is highly recommended for every JavaScript developer who wants to clarify his/her understanding of the async and the await keywords, and of the Promise constructor function.
More info about that meetup at https://www.meetup.com/lifemichael/events/302135153/.
You can find the video that was captured at https://youtu.be/DrQBhT-b0I8
Join our JavaScript Monthly Review newsletter for free at https://www.linkedin.com/newsletters/javascript-monthly-review-7207562914604494848/
Join our JavaScript Developers' professional group on Facebook at https://www.facebook.com/groups/407961892610345
Join our online international conference for JavaScript at https://xtremejs.dev
Scala Jump Start [Free Online Meetup in English]![Scala Jump Start [Free Online Meetup in English]](https://cdn.slidesharecdn.com/ss_thumbnails/scalajumpstart202407-240806123226-086f5431-thumbnail.jpg?width=560&fit=bounds)
Scala Jump Start [Free Online Meetup in English]Haim Michael This is the presentation that was in use when delivering the Scala Jump Start free meetup, described at https://www.meetup.com/lifemichael/events/294781025. You can find the video at https://youtu.be/eEE9zDwPMbw
The MVVM Architecture in Java [Free Meetup]![The MVVM Architecture in Java [Free Meetup]](https://cdn.slidesharecdn.com/ss_thumbnails/themvvmarchitecture20230702-240709115838-c4912ba1-thumbnail.jpg?width=560&fit=bounds)
The MVVM Architecture in Java [Free Meetup]Haim Michael You can find the code that was coded (live) during the meetup at
https://github.com/lifemichael/java-mvvm
You can find the video of the two parts on YouTube at https://youtu.be/ri-gKGsXWcc
More information about the two meetups these slides refer to can be found at
July 2nd, 2024:
https://www.meetup.com/lifemichael/events/295751855/
July 9th, 2024:
https://www.meetup.com/lifemichael/events/301993871/
Kotlin Jump Start Online Free Meetup (June 4th, 2024)
Kotlin Jump Start Online Free Meetup (June 4th, 2024)Haim Michael These are the slides that I used when delivering the Kotlin Jump Start online meetup on June 4th, 2024.
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synchronous online course for learning Kotlin
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professional group for Kotlin developers
https://www.facebook.com/groups/1977843402436668
java monthly review free newsletter
https://www.linkedin.com/newsletters/7196786144515100674
xtremej international online conference
https://xtremej.dev
Anti Patterns
Anti PatternsHaim Michael This is the presentation I was using when delivering the meetup about Anti Patterns.
We at life michael continuously develop professional seminars. High-tech companies can invite us to deliver these seminars to their employees. You can find more information about what we do at https://lifemichael.com.
You can find more information about that meetup at https://www.meetup.com/lifemichael/events/293712620/.
You can find the video that was captured at https://youtu.be/xbBUC2Wyhs8
You can join our meetup group (for free) at https://meetup.com/lifemichael
Virtual Threads in Java
Virtual Threads in JavaHaim Michael This is the slides I was using when delivering the meetup about Virtual Threads in Java. It took place in July, 2023. You can find the video at https://youtu.be/Ja8bc6YpF2g.
More information about our company premium professional software development, consulting, and training services can be found at https://lifemichael.com
MongoDB Design Patterns
MongoDB Design PatternsHaim Michael These are the slides I was using when delivering the meetup described at https://www.meetup.com/lifemichael/events/292574718/ You can find the video of this meetup at https://youtu.be/qT9NmgPU1j8
Introduction to SQL Injections
Introduction to SQL InjectionsHaim Michael I was using this presentation when delivering our meetup about SQL Injections.
You can find the video of that event at https://youtu.be/akpe3vKFeoc
More information about our professional services (including training and consulting) can be found at https://lifemichael.com
Record Classes in Java
Record Classes in JavaHaim Michael This is the presentation that was prepared for our meetup about Record Classes in Java. You can find more information about that meetup at https://www.meetup.com/lifemichael/events/288771190/ You can find the video that was captured at https://youtu.be/LN4-NuNvrvQ You can find more information about our courses and seminars at https://lifemichael.com
Microservices Design Patterns
Microservices Design PatternsHaim Michael This is the video capture of the meetup described at https://www.meetup.com/lifemichael/events/287981390/ This video includes the two talks the meetup included. The first one is an introductory talk for the topic. The second one covers the SAGA design pattern.
Structural Pattern Matching in Python
Structural Pattern Matching in PythonHaim Michael This document provides an introduction and overview of structural pattern matching in Python. It discusses how pattern matching can be considered as switch statements on steroids, and demonstrates various pattern matching techniques including matching specific values, sequences, objects, attributes, enums, mappings, adding conditions, and more. Examples are provided throughout to illustrate each technique. The document is intended to help explain the capabilities and usage of Python's new pattern matching feature.
Unit Testing in Python
Unit Testing in PythonHaim Michael I used these slides when delivering a meetup about Unit Testing in Python. You can find the video at https://youtu.be/5QHArdkUeYc
OOP Best Practices in JavaScript
OOP Best Practices in JavaScriptHaim Michael This presentation was used during the 'OOP Best Practices in JavaScript' meetup that took place on April 11th, 2022. More information about this meetup group can be found at https://meetup.com/lifemichael
Java Jump Start
Java Jump StartHaim Michael These slides were prepared for the Java Jump Start meetup I delivered on March 7th, 2022. More info about that meetup and others at https://www.meetup.com/lifemichael/events/278744096/
JavaScript Jump Start 20220214
JavaScript Jump Start 20220214Haim Michael This is the presentation I was using when delivering the JavaScript Jump Start meetup on February 14th, 2022. More information about that meetup can be found at https://www.meetup.com/lifemichael/events/278743661/ You can find the video at https://youtu.be/F1e-KHTEKzo
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The matplotlib Library
- 1. The matplotlib Library Haim Michael October 14th , 2020 All logos, trade marks and brand names used in this presentation belong to the respective owners. lifemichael
- 2. © 2008 Haim Michael 20150729 What is Matplotlib? Matplotlib is a library that allows us to create static, animated, and interactive visualizations in Python.
- 3. © 2008 Haim Michael 20150729 Installing Matplotlib The simplest way to install matplotlib would be to install it using the pip utility. pip install matplotlib
- 4. © 2008 Haim Michael 20150729 The plot Function There are various ways to use the matplotlib library for drawing diagrams. The simplest would be using the plot function, that was defined inside the matplotlib.pyplot module, passing over the x and the y coordinates.
- 5. © 2008 Haim Michael 20150729 The show Function Once completed, calling show will draw the diagram on the screen. import matplotlib.pyplot as plt import numpy as np plt.plot([1,2,3,4], [4,3,2,1], label='linear') plt.legend() plt.show()
- 6. © 2008 Haim Michael 20150729 The show Function
- 7. © 2008 Haim Michael 20150729 The Figure Class When instantiating matplotlib.figure.Figure class we get an object that represents a window (or a page) on which everything will be plotted.
- 8. © 2008 Haim Michael 20150729 The add_subplot Method We can invoke add_sublot on a Figure object in order to add axes for plotting a diagram.
- 9. © 2008 Haim Michael 20150729 The add_subplot Method import matplotlib.pyplot as plt import numpy as np fig = plt.figure() ax = fig.add_subplot() ax.scatter([1,2,3,4,5],[4,3,7,8,20]) plt.show()
- 10. © 2008 Haim Michael 20150729 The subplots Function We can invoke the sublots function that was defined in the matplotlib.pyplot module and get a tuple that holds a reference for a Figure object and a reference for an Axes object.
- 11. © 2008 Haim Michael 20150729 The subplots Function import matplotlib.pyplot as plt import numpy as np x = np.linspace(0, 2, 20) fig, ax = plt.subplots() ax.plot(x, x, label='x=x') ax.plot(x, x**2, label='x=x**2') ax.plot(x, x**3, label='x=x**3') ax.set_xlabel('x label') ax.set_ylabel('y label') ax.set_title("Simple Plot") ax.legend() plt.show()
- 12. © 2008 Haim Michael 20150729 The Interactive Mode We can turn on the interactive mode by calling the ion() function. Doing so when using a Python console we will be able to continue the execution of more statements in the Python Console and while doing so, get to see the immediate outcome.
- 13. © 2008 Haim Michael 20150729 The Interactive Mode
- 14. © 2008 Haim Michael 20150729 The plot() Function The plot() method that was defined inside the matplotlib.pyplot module can be invoked in various ways. The plot() method that was defined inside the matplotlib.pyplot module can be invoked in various ways.
- 15. © 2008 Haim Michael 20150729 The plot() Function import matplotlib.pyplot as plt import numpy as np t = np.arange(0, 4, 0.1) plt.plot(t, t, 'g--', t, t**2, 'bs', t, t**3, 'r^') plt.show()
- 16. © 2008 Haim Michael 20150729 Q & A Thanks! [email protected] 054-6655837 http://blog.lifemichael.com