(Optional): A boolean that, when set to true , constrains the result to the target range. Common Use Cases
: The lower and upper bounds of the target range.
: Converting complex datasets, such as temperature readings or geographic coordinates, into visual properties like circle diameters or pixel positions on a canvas. map-p5js
To use the function, you provide the current value and its original range, followed by the target range you want it to move into. : The incoming number to be remapped.
The map() function in p5.js is a cornerstone of creative coding, used to translate a value from one numerical range to another. Whether you are using mouse movements to control colors or scaling data sensor values to fit a canvas, map() simplifies the math required to keep elements in proportion. The Core Syntax (Optional): A boolean that, when set to true
For more technical details, you can visit the official p5.js map() reference or explore interactive tutorials on the p5.js Web Editor . Intro to p5.js - 3.3 - Loops and Map
: let diameter = map(mouseY, 0, height, 20, 300); — This ensures that as the mouse moves vertically, the size of an object scales proportionally within a specific range. To use the function, you provide the current
: You can reverse values by swapping the target bounds (e.g., mapping 0–100 to 255–0 ), causing an element to decrease in size or intensity as an input increases. Practical Examples