Gain insights into Python for scientific computing. Explore arrays, plotting, linear equations, and algorithms using NumPy, Matplotlib, SciPy. Delve into applying tools with practical exercises.

Dockerfile.tar.gz

Python3

If you're a scientist or an engineer interested in learning scientific computing, this is the place to start.

In this course, you'll learn to write your own useful code to perform impactful scientific computations. Along the way, your understanding will be tested with periodic quizzes and exercises.

Topics covered in this course include arrays, plotting, linear equations, symbolic computation, scientific algorithms, and random variables. You’ll also be exposed to popular Python packages like NumPy, Matplotlib, SciPy, and others. In the last part of the course, the application section will test your ability to recall and apply the tools you have studied into newly learned scientific concepts.

At the end of this course, you'll be equipped with the tools necessary for everyday scientific computation.

Python for Scientists and Engineers

# Using conditions on arrays

You can perform comparison statements on arrays, and it will return an array of booleans (`True` and `False` values) for each value in the array. For example, let's create an array and find out which values of the array are below 5:

import numpy as np

a = np.arange(10)
print('the total array:', a)
print("array of booleans:", a < 5)
print('values less than 5:', a[a < 5])

If we want to replace every value that is less than 5 with 666, we can use the following short syntax:

import numpy as np

a = np.arange(10)
print(a)
a[a < 5] = 666
print(a)

## Using multiple conditions

Multiple conditions can be given as well. When two conditions both have to be true, use the `&` symbol. When at least one of the conditions needs to be true, use the `|` symbol (that is the vertical bar).

Let's use the `&` symbol:

import numpy as np

a = np.arange(20)
print(a)
a[(a > 5) & (a < 10)] = 666
print(a)

Since only the values $6, 7, 8$ and $9$ satisfy the condition $5<a$ **and** $a<10$, they are replaced with $666$.


Now, let's use the `|` symbol and notice the difference in the output:

In this lesson, we will discuss some smart programming tools for arrays.

Introduction

Python Refresher

Arrays

Plotting

Systems of Linear Equations

Symbolic Computation

Scientific Algorithms

Random Variables

Applications

Conclusion

Appendix

Python for Scientists and Engineers Exam

Smart Array Programming

Using conditions on arrays #

Using multiple conditions #