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Introduction to syntax in R

Onyejiaku Theophilus Chidalu

Overview

R is a programming language used for statistical analysis, graphical presentation, and reporting. It also helps with data cleaning, analysis, and visualization.

Number output in R

In R, we type the number without a quote to return a number as an output.

Example

# to print 5
5
# to print 2.5
2.5
# to print -20
-20
# to print some other numbers
10
-1.5

Text output in R

In R, we use single or double quotes to return a text as an output.

Example

'Hello World'
"Hello World"

Calculations in R

To perform calculations in R, we type the numbers together with the mathematical operator sign.

Example

# Addition 
10 + 5

# Subtraction
10 - 5

# Multiplication
10 * 5

# Division
10 / 5 

# Modulo
10 %% 5

# Exponentiation
10 ^ 5

Print in R

R does not require the print function to return an output of a code. It has the print() function if we wish to use it. We use the print() function only when we’re working with for loops.

Example

"Hello world"
'Hello World'
print('Hello World')

# using a for loop
for (x in 1:5) {
  print(x)
}

Note: Using the print() function is only compulsory with for loop. This is because the code is inside curly braces {}.

RELATED TAGS

r
syntax
language
communitycreator

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Onyejiaku Theophilus Chidalu
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