Help - push an array into array simple question

p5.js Coding Questions
5

If you are hoping for an array of 32 inner arrays, where the inner arrays each contain three random numbers, and where the inner arrays differ from each other, this will do it:

let sampleBuffer=[];
let bandsEnergy=[];

function setup() {

}

function draw() {
      for(let i=0; i<3; i++) {
        bandsEnergy[i] = random(10);
      }
      sampleBuffer.push(bandsEnergy.slice(0, 3));
      if(sampleBuffer.length==32) {
        noLoop();
        console.log(sampleBuffer);
      }
  }

After testing this, you can remove the call to the noLoop function.

But perhaps we are mistaken regarding what you are trying to do. If so, please clarify it for us

EDIT (August 5, 2021):

Perhaps the following example can help:

let sampleBuffer=[];
let bandsEnergy=[];

function setup() {
  createCanvas(400, 500);
  for (let i=0; i<20; i++) {
    for (let j=0; j<3; j++) {
      bandsEnergy[j] = random(10);
    }
    sampleBuffer.push(bandsEnergy.slice(0, 3));
  }
  frameRate(10);
}

function draw() {
  background(255);
  for (let j=0; j<3; j++) {
    bandsEnergy[j] = random(10);
  }
  for (let i=0; i<sampleBuffer.length; i++) {
    text(sampleBuffer[i], 10, i * 20 + 20);
  }
  sampleBuffer.push(bandsEnergy.slice(0, 3));
  sampleBuffer.splice(0,1);
 }

Image capture:
array_display

Please let us know how it works out.