notes:

since we're ranking similarity i really don't see the point of multiple sliders so other than (maybe) stylistic congruency and general edits (link to sheets etc.) i dont see what should change.

​

​

This similarity rating demo can load multiple images as stimuli and display 2 images at a time. The order is fully randomized. Image file names/numbers and rating values will be stored, and can be downloaded afterwards.

​

Instructions:

1. Upload images

2. Write image filenames

​

*/

​

// !! Change this to you own project's name in order to save your experiments data.

// The data can be found on the google drive

const SAVE_DATA_SHEET_NAME = "example_similarity";

​

const filenames = ['1.jpg', '2.jpg', '3.jpg', '4.jpg'];

const randomOrder = true;

​

// Here you can change the prompt the user gets.

const instruction = 'Please rate the similarity of the 2 objects showed above';

const leftLabel = 'not so similar';

const rightLabel = 'very similar';

​

var imgX1 = 100;

var imgX2 = 620;

var imgY = 30;

var imgSize = 480;

​

var lineY = imgY + imgSize + 160;

var images = [];

var sliderX1 = 150;

var sliderX2 = 1050;

var sliderBallRadius = 18;

var ratingValue;

var labelYOffset = 35;

var trialNumber = 1;

var imgMatrix = makeCombinations(filenames.length);

​

function preload() {

  for (var i = 0; i < filenames.length; i++) {

    images[i] = loadImage('img/' + filenames[i]);

  }

}

​

function setup() {

  if(randomOrder){

    shuffleMatrix(imgMatrix);}

  createCanvas(1200, 800);

​

  data = new p5.Table();

  data.addColumn('Image 1');

  data.addColumn('Image 2');

  data.addColumn('Similarity Ratings');

}

​

function draw() {

  background(220);

​

  if (trialNumber <= imgMatrix.length) {

    image(images[imgMatrix[trialNumber - 1][0]], imgX1, imgY, imgSize, imgSize);

    image(images[imgMatrix[trialNumber - 1][1]], imgX2, imgY, imgSize, imgSize);

​

    fill(0, 102, 153);

    noStroke();

    textSize(22);

    textAlign(LEFT);

    text(instruction, 100, 560);

​

    fill(80);

    textSize(18);

    text('Move mouse horizontally to adjust slider, click to respond and proceed to next trial.', 100, 590);

​

    strokeWeight(4);

    stroke(80);

    line(sliderX1, lineY, sliderX2, lineY);

    drawSliderTicks();

​

    fill(158, 194, 208);

    stroke(50);

    strokeWeight(4);

    ellipse(sliderX(mouseX), lineY, sliderBallRadius);

​

    fill(0);

    noStroke();

    textSize(18);

    text(leftLabel, sliderX1, lineY + labelYOffset);

    textAlign(RIGHT);

    text(rightLabel, sliderX2, lineY + labelYOffset);

  } else {

​

    //final page, data download instruction

    fill(0, 102, 153);

    noStroke();

    textSize(28);

    textAlign(CENTER);

    text('The End', 600, 400);

​

    fill(100);

    textSize(20);

    text('The data has been sent.', 600, 450);

  }

​

}

​

function mouseClicked() {

  if (trialNumber <= imgMatrix.length) {

    ratingValue = round(100 * ratingX(mouseX));

​

    // save the data

    let newRow = data.addRow();

    newRow.setString('Image 1', filenames[imgMatrix[trialNumber - 1][0]]);

    newRow.setString('Image 2', filenames[imgMatrix[trialNumber - 1][1]]);

    newRow.setNum('Similarity Ratings', ratingValue);

​

    trialNumber++;

    if(trialNumber > imgMatrix.length){

      // Translate the p5 Table to a two dimensional array and send it to Google sheets

      dataExport = data.getArray();

      dataExport.unshift(data.columns);

      saveToSheet(SAVE_DATA_SHEET_NAME, dataExport);

    }

  }

}

​

function sliderX(mx) {

  var mq = max([mx, sliderX1]);

  return min([mq, sliderX2]);

}

​

function ratingX(mx) {

  var mq = max([mx, sliderX1]);

  mq = min([mq, sliderX2]);

  return map(mq, sliderX1, sliderX2, 0, 1);

}

​

function drawSliderTicks() {

  var tickHeight = -8;

  var nTicks = 6;

  for (var i = 0; i < nTicks; i++) {

    var xtemp = map(i, 0, nTicks - 1, sliderX1, sliderX2);

    line(xtemp, lineY, xtemp, lineY - tickHeight);

  }

}

​

function makeCombinations(n) {

  //create a 2 by n matrix

  holder = [];

  for (var i = 0; i < n; i++) {

    for (var j = i; j < n; j++) {

      holder.push([i, j]);

    }

  }

  return holder;

}

​

function shuffleMatrix(matrix){

    shuffle(matrix, true);

    for (var i = 0;i<matrix.length;i++) {

       shuffle(matrix[i], true);

    }}

​

​

​

/**

 * This function saves the data to a google sheet of the given name.

 * Make sure that the name is unique for you project!

 * If your name is not unique then you will share a google sheet with someone else.

 *

 *

 * @param {string} sheetName - The name of you sheet. Make sure it is unique to your project.

 * @param {Array<Array>} data - A two dimensional array representing the data.

 *             Data example:

 *             data = [

 *             (row1:) [col1, col2, col3],

 *             (row2:) [col1, col2, col3]

 *                    ]

 * @param {string} [tabName] - (OPTIONAL) The name of the tab/worksheet that this instance of data will be in.

 * If you leave this empty it will fall back to using the current time of data submission as tab name

 * IMPORTANT! if you are using custom tab names make sure that every name is unique.

 * If a name already exists saving wil result in an error.

 */

async function saveToSheet(sheetName, data, tabName) {

​

    // Safety check

    if (!sheetName) {

        return console.error("The name for the sheet was not valid!")

    }

    if (!data || data.length === 0) {

        return console.error("Cannot save empty data!")

    }

​

    // Building save request

    const requestBody = {

        sheetName,

        data

    }

​

    // Add tabName if it exists

    if (tabName && typeof tabName === "string") {

        requestBody.tabName = tabName

    }

​

​

    try {

        // Send the save request

        const response = await fetch("https://node.bykrijgsman.com/save-data", {

            method: "POST",

            mode: "cors",

            headers: {

                'Content-Type': 'application/json'

            },

            body: JSON.stringify(requestBody)

        })

​

        const result = await response.text()

        console.log(result)

    } catch (e) {

        // There was an error while saving if we get here!

        console.error(e)

    }

​

}