# 6.10 Plotting and Vizualization

## Theory: Number Variable Types

• Integer (positive and negative counting number) - e.g. `-3, -2, -1, 0, 1, 2, and 3`

• Signed: `Int8, Int16, Int32, Int64, and Int128`

• Unsigned: `UInt8, UInt16, UInt32, UInt64, and UInt128`

• Boolean: `Bool` (0 = False and 1 = True)

• Float (real or floating point numbers) - e.g., `-2.14, 0.0, and 3.777`

• `Float16, Float32, Float64`

## Examples:

### Types of Numbers

Use `typeof()` function to determine type

Input:

``````# Define two variables x and y
x = 100
y = 3.14

# Print out the variable types for each
println(typeof(x))
println(typeof(y))``````

Output:

``````Int64
Float64
``````

### Arithmetic Operators

OperatorExample
Subtractionx - y
Multiplicationx * y
Divisionx / y
Power (Exponent)x ^ y
Remainder (Modulo)x % y
Negation (for Bool)!x

Input:

``````# Demonstrates different math operations
using Printf

n1 = 7    # First number
n2 = 3    # Second number

# Output results of different math operations
println("\$n1 + \$n2 = \$(n1 + n2)")             # Addition
println("\$n1 - \$n2 = \$(n1 - n2)")             # Subtraction
println("\$n1 * \$n2 = \$(n1 * n2)")             # Multiplication
println("\$n1 / \$n2 = \$(n1 / n2)")             # Division
@printf("%d / %d = %.2f\n", n1, n2, n1 / n2)  # Print to 2 decimal places
println("\$n1 ^ \$n2 = \$(n1 ^ n2)")             # Power/Exponent
println("\$n1 % \$n2 = \$(n1 % n2)")             # Modulo/Remainder``````

Output:

``````7 + 3 = 10
7 - 3 = 4
7 * 3 = 21
7 / 3 = 2.3333333333333335
7 / 3 = 2.33
7 ^ 3 = 343
7 % 3 = 1
``````

### Comparison Operators and Functions

Input:

OperatorExample
Equalityx == y or isequal(x, y)
Inequalityx != y or !isequal (x, y)
Less thanx < y
Less than or equal tox <= y
Greater thanx > y
Greater than or equal tox >= y
``````# compare.jl
# Demonstrate comparison operators

# Assign values to variables using parallel assignment
c1, c2, c3, c4 = 25, 50, 75, 50
println("c1 = \$(c1), c2 = \$(c2), c3 = \$(c3), c4 = \$(c4)")

# Output results of different comparison operations

# Testing equality
println("  c1 = c3 is \$(c1 == c3)")
println("  c2 = c4 is \$(isequal(c2, c4))")

# Changing values using abbreviated assignment operators
c1 *= 3    	# Shorthand for c1 = c1 * 3
c4 += 1    	# Shorthand for c4 = c4 + 1

println("c1 = \$(c1), c2 = \$(c2), c3 = \$(c3), c4 = \$(c4)")

# Testing less than and greater than
println("  c1 < c2 is \$(c1 < c2)")
println("  c4 <= c2 is \$(c4 <= c2)")
println("  c1 > c2 is \$(c1 > c2)")
println("  c3 >= c2 is \$(c3 >= c2)")``````

Output:

``````c1 = 25, c2 = 50, c3 = 75, c4 = 50
c1 = c3 is false
c2 = c4 is true
c1 = 75, c2 = 50, c3 = 75, c4 = 51
c1 < c2 is false
c4 <= c2 is false
c1 > c2 is true
c3 >= c2 is true
``````