Transposing

Good! Matrices are widely used in math, starting with different geometrical transformations, and ending with neural networks (yes, matrices are commonly used in AI).

What if we have a matrix and want to 'rotate' it? (or vice versa)?

In math, this operation is called transposing. It swaps columns with rows. In R this operation is implemented under t() function. This function receives the matrix you want to transpose as the parameter. For example,


              123456
            
# Initial matrix
m <- matrix(1:6, nrow = 2)
m # Output initial matrix

# Output transposed matrix
t(m)

As you can see, the initial matrix was 2x3 (2 rows and 3 columns), and the transposed is 3x2.

Task

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Given the matrix from the previous chapter.

Assign this matrix to the m variable.
Output the transposed m matrix.

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Section 1. Chapter 3

Transposing

Good! Matrices are widely used in math, starting with different geometrical transformations, and ending with neural networks (yes, matrices are commonly used in AI).

What if we have a matrix and want to 'rotate' it? (or vice versa)?


              123456
            
# Initial matrix
m <- matrix(1:6, nrow = 2)
m # Output initial matrix

# Output transposed matrix
t(m)

As you can see, the initial matrix was 2x3 (2 rows and 3 columns), and the transposed is 3x2.

Task

Swipe to show code editor

Given the matrix from the previous chapter.

Assign this matrix to the m variable.
Output the transposed m matrix.

Switch to desktop for real-world practiceContinue from where you are using one of the options below

Everything was clear?

Thanks for your feedback!

Section 1. Chapter 3

Switch to desktop for real-world practiceContinue from where you are using one of the options below