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Filled-Area Animation in JavaScript

How to make an animated filled-area plot with Plotly JS


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Plotly is a free and open-source graphing library for JavaScript. We recommend you read our Getting Started guide for the latest installation or upgrade instructions, then move on to our Plotly Fundamentals tutorials or dive straight in to some Basic Charts tutorials.

Plotly.d3.csv("https://raw.githubusercontent.com/plotly/datasets/master/2014_apple_stock.csv", function(err, rows){

  function unpack(rows, key) {
  return rows.map(function(row) { return row[key]; });
}

  var frames = []
  var x = unpack(rows, 'AAPL_x')
  var y = unpack(rows, 'AAPL_y')

  var n = 100;
  for (var i = 0; i < n; i++) {
    frames[i] = {data: [{x: [], y: []}]}
    frames[i].data[0].x = x.slice(0, i+1);
    frames[i].data[0].y = y.slice(0, i+1);
  }

  Plotly.newPlot('myDiv', [{
    x: frames[1].data[0].x,
    y: frames[1].data[0].y,
    fill: 'tozeroy',
    type: 'scatter',
    mode: 'lines',
    line: {color: 'green'}
  }], {
    title: "Filled-Area Animation",
    xaxis: {
      type: 'date',
      range: [
        frames[99].data[0].x[0],
        frames[99].data[0].x[99]
      ]
    },
    yaxis: {
      range: [
        0,
        90
      ]
    },
    updatemenus: [{
      x: 0.1,
      y: 0,
      yanchor: "top",
      xanchor: "right",
      showactive: false,
      direction: "left",
      type: "buttons",
      pad: {"t": 87, "r": 10},
      buttons: [{
        method: "animate",
        args: [null, {
          fromcurrent: true,
          transition: {
            duration: 0,
          },
          frame: {
            duration: 40,
            redraw: false
          }
        }],
        label: "Play"
      }, {
        method: "animate",
        args: [
          [null],
          {
            mode: "immediate",
            transition: {
              duration: 0
            },
            frame: {
              duration: 0,
              redraw: false
            }
          }
        ],
        label: "Pause"
      }]
    }]
  }).then(function() {
    Plotly.addFrames('myDiv', frames);
  });

})
Plotly.d3.csv("https://raw.githubusercontent.com/plotly/datasets/master/finance-charts-apple.csv", function(err, rows){

  function unpack(rows, key) {
  return rows.map(function(row) { return row[key]; });
}

  var frames = []
  var x = unpack(rows, 'Date')
  var y = unpack(rows, 'AAPL.High')
  var x2 = unpack(rows, 'Date')
  var y2 = unpack(rows, 'AAPL.Low')

  var n = 100;
  for (var i = 0; i < n; i++) {
    frames[i] = {data: [{x: [], y: []}, {x: [], y: []}]}
    frames[i].data[1].x = x.slice(0, i+1);
    frames[i].data[1].y = y.slice(0, i+1);
    frames[i].data[0].x = x2.slice(0, i+1);
    frames[i].data[0].y = y2.slice(0, i+1);
  }

  var trace2 = {
    type: "scatter",
    mode: "lines",
    name: 'AAPL High',
    fill: 'tonexty',
    x: frames[5].data[1].x,
    y: frames[5].data[1].y,
    line: {color: 'grey'}
  }

  var trace1 = {
    type: "scatter",
    mode: "lines",
    name: 'AAPL Low',
    x: frames[5].data[0].x,
    y: frames[5].data[0].y,
    line: {color: 'lightgrey'}
  }

  var data = [trace1,trace2];

  var layout = {
    title: 'Multiple Trace Filled-Area Animation',
    xaxis: {
      range: [frames[99].data[0].x[0], frames[99].data[0].x[99]],
      showgrid: false
    },
    yaxis: {
      range: [120, 140],
      showgrid: false
    },
    legend: {
      orientation: 'h',
      x: 0.5,
      y: 1.2,
      xanchor: 'center'
    },
    updatemenus: [{
      x: 0.5,
      y: 0,
      yanchor: "top",
      xanchor: "center",
      showactive: false,
      direction: "left",
      type: "buttons",
      pad: {"t": 87, "r": 10},
      buttons: [{
        method: "animate",
        args: [null, {
          fromcurrent: true,
          transition: {
            duration: 0,
          },
          frame: {
            duration: 40,
            redraw: false
          }
        }],
        label: "Play"
      }, {
        method: "animate",
        args: [
          [null],
          {
            mode: "immediate",
            transition: {
              duration: 0
            },
            frame: {
              duration: 0,
              redraw: false
            }
          }
        ],
        label: "Pause"
      }]
    }]
  };

  Plotly.newPlot('myDiv', data, layout).then(function() {
    Plotly.addFrames('myDiv', frames);
  });
})