p5.js subset() function

The subset() function in p5.js is used to get the subset of the given array elements. This function extracts the elements from an existing array. 

Syntax:

subset(Array, Start, Count)

Parameters: This function accepts three parameters as mentioned above and described below:

• Array: This parameter holds the array elements on which the subset() operation is to be done to get its subset element.
• Start: This is the number from where extraction is to be done. Its value starts from 0.
• Count: This is the number of elements that are to be extracted.

Return Value: It returns the extracted elements. The below programs illustrate the subset() function in p5.js

Example 1: This example uses the subset() function to get the subset of the given array of elements. 

javascript

function setup() {

    // Creating Canvas size
    createCanvas(600, 90);
}

function draw() {

    // Set the background color
    background(220);

    // Initializing the array
    let Array = ['Ram', 'Geeta', 'Shita', 'Shyam'];

    // Initializing a start value from where
    // extraction is done
    // it starts from 0.
    let Start = 1;

    // Initializing the count which defines
    // the number of elements to be extracted
    let Count = 2;

    // Calling to subset() function.
    let A = subset(Array, Start, Count);

    // Set the size of text
    textSize(16);

    // Set the text color
    fill(color('red'));

    // Getting extracted elements
    text(& quot;Extracted elements are: & quot; + A, 50, 30);
}

Output:

Example 2: This example uses the subset() function to get the subset of the given array elements. 

javascript

function setup() {

    // Creating Canvas size
    createCanvas(600, 90);
}

function draw() {

    // Set the background color
    background(220);

    // Initializing the array
    let Array = ['Ram', 'Geeta', 'Shita', 'Shyam'];

    // Initializing a start value from where
    // extraction is done
    // it starts from 0.
    let Start = 0;

    // Initializing the count which defines
    // the number of elements to be extracted
    let Count = 3;

    // Calling to subset() function.
    let A = subset(Array, Start, Count);

    // Set the size of text
    textSize(16);

    // Set the text color
    fill(color('red'));

    // Getting extracted elements
    text(& quot;Extracted elements are: & quot; + A, 50, 30);
}

Output:

Reference: https://p5js.org/reference/#/p5/subset