source/uncertainty-calibration/draw_weathergraph.js

window.drawWeatherGraph = function (graphSel, fig_height, fig_width){
  
  var threshold = .4

  var thresholds = [0, .2, .4, .6, .8, 1].map((val, i) => {
    var isLocked = val == 0 || val == 1
    return {val, i, isLocked, origVal: val}
  })

  var c = d3.conventions({
      sel: graphSel.html('').append('div'),
      height: fig_height,
      totalWidth: fig_width,
      margin: {top: 100, bottom: 100}
  });

  var {predictionSel, weatherGroupSel} = (function(){
    c.y.domain([0,9]).clamp(true);
  
    // x-Axis
    c.xAxis.ticks(5).tickFormat(d3.format('.2f'))
    c.yAxis.ticks(0)
    d3.drawAxis(c)
    c.svg.select('.x')
      .translate(-40, 1)
      .selectAll('line').translate(20, 1)

    // x-Axis label
    c.svg.append('text.axis-label')
        .translate([c.width/2, -50])
        .at({textAnchor: 'middle'})
        .at({fill: '#000', fontSize: 14})
        .text('Model Score');

    // Weather icons
    var weatherGroupSel = c.svg.appendMany('g.weatherdata', weatherdata)
      .translate(d => [c.x(d.score), c.y(d.h)])
      //.call(d3.attachTooltip)
      // .on("mouseover", function(d) {    
      //   ttSel.html("");
      //   var gtSel = ttSel.append("div").html(`ground truth: <span>${d.label}</span>`);
      //   ttSel.classed("tt-text", true); 
      // })

    weatherGroupSel.append('text.icon')
        .text(function(d,i){return emojis[d.label];})
        .at({fontSize: 18, textAnchor: 'middle', dy: 8})

    // Add prediction circles
    weatherGroupSel.append('circle.prediction')
        .at({cx: 0, cy: 0, r: 14, opacity: 0, fillOpacity: 0, stroke: 'red'});
    weatherGroupSel.append('path.prediction')
        .at({d: d => ['M', -10, 10, 'L', 10, -10].join(' '), stroke: 'red', opacity: 0})

    var predictionSel = c.svg.selectAll('.prediction');

    return {predictionSel, weatherGroupSel}
  })()

  var {thresholdSel, messageSel, setThreshold} = (function(){
    var thresholdSel = c.svg.append('g.threshold')

    var thresholdGroupSel = thresholdSel.append('g')
      .call(d3.drag().on('drag', 
        () => renderThreshold(c.x.invert(d3.clamp(0, d3.event.x, c.width))))
      )

    var thesholdTextSel = thresholdGroupSel.append('g.axis').append('text')
      .at({
        textAnchor: 'middle',
        dy: '.33em',
        y: c.height + 30
      })
      .text('Threshold')

    var rw = 16
    thresholdGroupSel.append('rect')
      .at({
        width: rw,
        x: -rw/2,
        y: -10,
        height: c.height + 30,
        fillOpacity: .07,
      })

    var pathSel = thresholdGroupSel.append('path')
      .at({
        stroke: '#000',
        strokeDasharray: '2 2',
        fill: 'none',
        d: `M 0 -10 V ` + (c.height + 20),
      })

    
    var accuracyValBox = thresholdSel.append('rect.val-box')
      .at({width: 55, height: 20, x: c.width/2 + 32.5, y: c.height + 65, rx: 3, ry: 3})

    var accuracySel = thresholdSel.append('text.big-text')
      .at({x: c.width/2 - 10, y: c.height + 80, textAnchor: 'middle'})

    var accuracyValSel = thresholdSel.append('text.val-text')
      .at({x: c.width/2 + 60, y: c.height + 80, textAnchor: 'middle'})


    var messageSel = thresholdSel.append('text.tmessage')
      .at({x: c.width/2, y: c.height + 120, textAnchor: 'middle'})
  
    function renderThreshold(t){
      if (isNaN(t)) return // TODO debug this

      thresholdGroupSel.translate(c.x(t), 0)

      predictionSel.at({opacity: d => isClassifiedCorrectly(d, t) ? 0 : 1})

      var acc = d3.mean(
        weatherdata, 
        d => isClassifiedCorrectly(d, t)
      )
      accuracySel.text('Accuracy: ');
      accuracyValSel.text(d3.format('.1%')(acc))
      messageSel.text('Try dragging the threshold to find the highest accuracy.')
      thesholdTextSel.text('Threshold: ' + d3.format('.2f')(t))

      threshold = t

      function isClassifiedCorrectly(d,t) {
        return d.score >= t ? d.label == 1 : d.label == 0;
      };
    }

    renderThreshold(threshold)

    var timer = null
    function setThreshold(newThreshold, duration){
      var interpolateFn = d3.interpolate(threshold, newThreshold)

      if (timer) timer.stop()
      timer = d3.timer(ms => {
        var t = Math.min(ms/duration, 1)
        if (t == 1) timer.stop()

        renderThreshold(interpolateFn(t))
      })
    }

    return {thresholdSel, messageSel, setThreshold}
  })()

  function drawTrueLegend(c){
    var truthAxis = c.svg.append('g').translate([fig_width + 40, 1])
    truthAxis.append('text.legend-title').text('Truth') // TODO: Maybe more of a label? "what actually happened?" or just remove this legend
      .at({textAnchor: 'middle', fontWeight: 500, x: 20})

    truthAxis.append('g').translate([20, 40])
      .append('text.legend-text').text('Sunny').parent()
        .at({fontSize: 15})
      .append('text').text(emojis[0])
        .at({fontSize: 25, x: -30, y: 5})
    
    truthAxis.append('g').translate([20, 80])
      .append('text.legend-text').text('Rainy').parent()
        .at({fontSize: 15})
      .append('text').text(emojis[1])
        .at({fontSize: 25, x: -30, y: 5})
  }
  drawTrueLegend(c);


  var {thresholdsGroupSel, renderThresholds, setThresholds} = (function(){
    var valsCache = []
    var drag = d3.drag()
      .on('drag', function(){
        var val = d3.clamp(0, c.x.invert(d3.mouse(c.svg.node())[0]), 1)

        // Force thresholds to stay sorted
        valsCache[valsCache.activeIndex] = val
        _.sortBy(valsCache).forEach((val, i) => thresholds[i].val = val)

        renderThresholds()
      })
      .on('start', d => {
        valsCache = thresholds.map(d => d.val)
        valsCache.activeIndex = d.i
      })

    var thresholdsGroupSel = c.svg.append('g')

    thresholdsGroupSel.append('text.axis-label')
      .text('Calibrated Model Score')
      .translate([c.width/2, c.height + 50])
      .at({textAnchor: 'middle'})
      .at({fill: '#000', fontSize: 14})

    thresholdsSel = thresholdsGroupSel.appendMany('g.thresholds', thresholds)
      .call(drag)
      .st({pointerEvents: d => d.isLocked ? 'none' : ''})
      
    thresholdsSel.append('g.axis').append('text')
      .at({
        textAnchor: 'middle',
        dy: '.33em',
        y: c.height + 20
      })
      .text(d => d3.format('.2f')(d.origVal))

    var rw = 16
    thresholdsSel.append('rect')
      .at({
        width: rw,
        x: -rw/2,
        height: c.height + 10,
        fillOpacity: d => d.isLocked ? 0 : .07,
      })

    var pathSel = thresholdsSel.append('path')
      .at({
        stroke: '#000',
        strokeDasharray: '2 2',
        fill: 'none',
      })

    function renderThresholds(){
      if (thresholds.some(d => isNaN(d.val))) return

      thresholdsSel
        .translate(d => c.x(d.val) + .5, 0)

      pathSel.at({
        d: d => [
          'M', 0, c.height + 10,
          'L', 0, 0, 
          'L', c.x(d.origVal - d.val), -12, 
        ].join(' ')
      })

      if (window.calibrationCurve) calibrationCurve.renderBuckets()
    }

    renderThresholds()

    var timer = null
    function setThresholds(newThresholds, duration){
      var interpolateFns = thresholds
        .map((d, i) => d3.interpolate(d.val, newThresholds[i]))

      if (timer) timer.stop()
      timer = d3.timer(ms => {
        var t = Math.min(ms/duration, 1)
        if (t == 1) timer.stop()

        thresholds.forEach((d, i) => d.val = interpolateFns[i](t))

        renderThresholds()
      })
    }

    return {thresholdsGroupSel, renderThresholds, setThresholds}
  })()

  return {c, thresholdSel, messageSel, setThreshold, predictionSel, thresholds, thresholdsGroupSel, renderThresholds, setThresholds, weatherGroupSel};    

}

if (window.init) window.init()