# R - less than or equal to operator example

The example below shows the usage of less than or equal to(<=) operator in different scenarios.

### Comparing with a scalar

If a vector or a matrix is compared with a scalar (single element atomic vector), it acts on each element of it and returns TRUE if the element is less than or equal to the scalar, else returns FALSE.

```#first operand
x1 <- 10
v1 <- c(10, 20, 30)
m1 <- matrix(c(10, 20, 30, 40, 50, 60), nrow=2)

#second operand
x2 <- 20

#comparing two scalars
print(x1 <= x2)
#comparing a vector with a scalar
print(v1 <= x2)
#comparing a matrix with a scalar
cat("\n")
print(m1 <= x2)
```

The output of the above code will be:

``` TRUE
  TRUE  TRUE FALSE

[,1]  [,2]  [,3]
[1,] TRUE FALSE FALSE
[2,] TRUE FALSE FALSE
```

### Comparing with a vector

When two vectors are compared, their length should be same or length of longer vector should be multiple of length of shorter vector. Similarly, when a vector is compared with a matrix, the length of longer object should be multiple of length of shorter object.

Please note that, When a vector is compared with a matrix, elements are compared column-wise.

```#first operand
x1 <- 10
v1 <- c(10, 20, 30)
m1 <- matrix(c(10, 20, 30, 40, 50, 60), nrow=2)

#second operand
v2 <- c(10, 15, 20)

#comparing a scalar (single element
#atomic vector) with a vector
print(x1 <= v2)
#comparing two vectors
print(v1 <= v2)
#comparing a matrix with a vector
cat("\n")
print(m1 <= v2)
```

The output of the above code will be:

``` TRUE TRUE TRUE
  TRUE FALSE FALSE

[,1]  [,2]  [,3]
[1,]  TRUE FALSE FALSE
[2,] FALSE FALSE FALSE
```

### Comparing with a matrix

When two matrices are compared, their dimension should be same or dimension of bigger matrix should be multiple of dimension of smaller matrix.

```#first operand
x1 <- 10
v1 <- c(10, 20, 30)
m1 <- matrix(c(10, 20, 30, 40, 50, 60), nrow=2)

#second operand
m2 <- matrix(c(10, 20, 30, 10, 20, 30), nrow=2)

#comparing a scalar (single element
#atomic vector) with a matrix
print(x1 <= m2)
#comparing a vector with a matrix
cat("\n")
print(v1 <= m2)
#comparing two matrices
cat("\n")
print(m1 <= m2)
```

The output of the above code will be:

```     [,1] [,2] [,3]
[1,] TRUE TRUE TRUE
[2,] TRUE TRUE TRUE

[,1] [,2] [,3]
[1,] TRUE TRUE TRUE
[2,] TRUE TRUE TRUE

[,1]  [,2]  [,3]
[1,] TRUE  TRUE FALSE
[2,] TRUE FALSE FALSE
```

❮ R - Operators

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