p5.js NumberDict maxValue() Method

0 0 1 minute read

The maxValue() method of p5.NumberDict in p5.js is used to find the highest value in a number dictionary. A number dictionary can store multiple key-value pairs.

Syntax:

maxValue()

Parameters: This method does not accept any parameters.

Return Value: It returns a Number value that is the highest value in the dictionary.

The example below illustrates the maxValue() method in p5.js:

Example:

Javascript

function setup() { 
  createCanvas(550, 300); 
  textSize(16); 
  
  text("Click on the button to create a new " + 
       "dictionary and get the highest value", 
       20, 20); 
  
  setBtn =  
    createButton("Create random dictionary"); 
  setBtn.position(30, 40); 
  setBtn.mouseClicked(createNewDict); 
  
  getBtn =  
    createButton("Get highest Value"); 
  getBtn.position(300, 40); 
  getBtn.mouseClicked(getHighestValue); 
} 
  
function createNewDict() { 
  clear(); 
  
  // Create an object with random values 
  let obj = {}; 
  for (let i = 0; i < 5; i++) { 
    let rk = ceil(Math.random() * 100); 
    let rn = floor(Math.random() * 100); 
    rn = (rk > 25) ? rn : -rn; 
  
    obj[rk] = rn; 
  
    text("Key: " + rk + " : Value: " + 
         rn, 40, 120 + 20 * i); 
  } 
  
  // Create a dictionary using the above values 
  numDict = createNumberDict(obj); 
  
  text("New Dictionary created with values", 
       20, 80); 
  
  text("Click on the button to create a new " + 
       "dictionary and get the highest value", 
       20, 20); 
} 
  
function getHighestValue() { 
  
  // Get the highest value in the dictionary 
  let highestVal = numDict.maxValue(); 
  
  // Display the highest value 
  text("The highest value in the dictionary is: " + 
       highestVal, 20, 240); 
  
  text("Click on the button to create a new " + 
       "dictionary and get the highest value", 
       20, 20); 
} 

Output:

Online editor: https://editor.p5js.org/
Environment Setup: https://www.zambiatek.com/p5-js-soundfile-object-installation-and-methods/
Reference: https://p5js.org/reference/#/p5.NumberDict/maxValue

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