Matrix are a fundemental data structure in mathematics. Most languages require a library to support matrices, but R has this feature built in. In this article, we will learn how to create a matrix in R.

There are a view ways to create a matrix in R. The first way is to start with all of our data in a vector, then use the `matrix`

function to create a matrix from the vector. We also tell R how many rows and columns to use.

```
v = c(1, 2, 3, 4, 5, 6)
# 2 rows and 3 columns
matrix(v, 2, 3)
#> [,1] [,2] [,3]
#> [1,] 1 3 5
#> [2,] 2 4 6
```

We can also create a matrix filled with the same value. Two common matrices are the 0 and NA matrices.

```
matrix(0, 2, 3)
#> [,1] [,2] [,3]
#> [1,] 0 0 0
#> [2,] 0 0 0
matrix(NA, 2, 3)
#> [,1] [,2] [,3]
#> [1,] NA NA NA
#> [2,] NA NA NA
```