Aggregations in JavaScript

How to use D3.js-based Aggregates in 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.

Note: transforms are deprecated and will be removed in a future version of Plotly.js

Basic Example

var subject = ['Moe','Larry','Curly','Moe','Larry','Curly','Moe','Larry','Curly','Moe','Larry','Curly']
var score = [1,6,2,8,2,9,4,5,1,5,2,8]

var data = [{
  type: 'scatter',
  x: subject,
  y: score,
  mode: 'markers',
  transforms: [{
    type: 'aggregate',
    groups: subject,
    aggregations: [
      {target: 'y', func: 'avg', enabled: true},
    ]
  }]
}]

Plotly.newPlot('myDiv', data)

Aggregate Functions

var subject = ['Moe','Larry','Curly','Moe','Larry','Curly','Moe','Larry','Curly','Moe','Larry','Curly']
var score = [1,6,2,8,2,9,4,5,1,5,2,8]

var data = [{
  type: 'scatter',
  x: subject,
  y: score,
  mode: 'markers',
  transforms: [{
    type: 'aggregate',
    groups: subject,
    aggregations: [
      {target: 'y', func: 'avg', enabled: true},
    ]
  }]
}]
layout = {
  title: {
    text: '<b>Plotly Aggregations</b><br>use dropdown to change aggregation'
    },
    xaxis: {
    title: {
        text: 'Subject'
    }
    },
    yaxis: {
    title: {
        text: 'Score'
    },
    range: [0, 22]
    },
  height: 600,
  width: 900,
  updatemenus: [{
        x: 0.85,
        y: 1.15,
        xref: 'paper',
        yref: 'paper',
        yanchor: 'top',
        active: 0,
        showactive: false,
        buttons: [{
            method: 'restyle',
            args: ['transforms[0].aggregations[0].func', 'avg'],
            label: 'Avg'
        }, {
            method: 'restyle',
            args: ['transforms[0].aggregations[0].func', 'sum'],
            label: 'Sum'
        }, {
            method: 'restyle',
            args: ['transforms[0].aggregations[0].func', 'min'],
            label: 'Min'
        }, {
            method: 'restyle',
            args: ['transforms[0].aggregations[0].func', 'max'],
            label: 'Max'
        }, {
            method: 'restyle',
            args: ['transforms[0].aggregations[0].func', 'mode'],
            label: 'Mode'
        }, {
            method: 'restyle',
            args: ['transforms[0].aggregations[0].func', 'median'],
            label: 'Median'
        }, {
            method: 'restyle',
            args: ['transforms[0].aggregations[0].func', 'count'],
            label: 'Count'
        }, {
            method: 'restyle',
            args: ['transforms[0].aggregations[0].func', 'stddev'],
            label: 'Std.Dev'
        }, {
            method: 'restyle',
            args: ['transforms[0].aggregations[0].func', 'first'],
            label: 'First'
        }, {
            method: 'restyle',
            args: ['transforms[0].aggregations[0].func', 'last'],
            label: 'Last'
        }]
  }]
}

Plotly.newPlot('myDiv', data, layout)

Histogram Binning

d3.csv("https://plotly.com/~public.health/17.csv", function(err, rows){
      function unpack(rows, key) {
          return rows.map(function(row) { return row[key]; });
      }

trace1 = {
  x: unpack(rows, 'date'),
  autobinx: false,
  autobiny: true,
  marker: {color: 'rgb(68, 68, 68)'},
  name: 'date',
  type: 'histogram',
  xbins: {
    end: '2016-12-31 12:00',
    size: 'M1',
    start: '1983-12-31 12:00'
  }
};

data = [trace1];

layout = {
  paper_bgcolor: 'rgb(240, 240, 240)',
  plot_bgcolor: 'rgb(240, 240, 240)',
  title: {
    text: ''
  },
  xaxis: {
    autorange: true,
    range: ['1984-07-01 06:00', '2016-07-30 18:00'],
    title: {
      text: ''
    },
    type: 'date'
  },
  yaxis: {
    autorange: true,
    range: [0, 92.6315789474],
    title: {
      text: 'Shootings incidents'
    },
    type: 'linear'
  },
  updatemenus: [{
        x: 0.1,
        y: 1.15,
        xref: 'paper',
        yref: 'paper',
        yanchor: 'top',
        active: 0,
        showactive: true,
        buttons: [{
            args: ['xbins.size', 'M1'],
            label: 'Month',
            method: 'restyle',
        }, {
            args: ['xbins.size', 'M3'],
            label: 'Quater',
            method: 'restyle',
        }, {
            args: ['xbins.size', 'M6'],
            label: 'Half Year',
            method: 'restyle',
        }, {
            args: ['xbins.size', 'M12'],
            label: 'Year',
            method: 'restyle',
        }]
  }]
};

Plotly.newPlot('myDiv', data, layout);

});

Mapping with Aggregates

d3.csv('https://raw.githubusercontent.com/bcdunbar/datasets/master/worldhappiness.csv', function(err, rows){
      function unpack(rows, key) {
          return rows.map(function(row) { return row[key]; });
      }

  var data = [{
        type: 'choropleth',
        locationmode: 'country names',
        locations: unpack(rows, 'Country'),
        z: unpack(rows, 'HappinessScore'),
        autocolorscale: false,
        reversescale: true,
        colorscale: 'Portland',
        transforms: [{
          type: 'aggregate',
          groups: unpack(rows, 'Country'),
          aggregations: [
            {target: 'z', func: 'avg', enabled: true},
        ]
    }]
   }];

    var layout = {
      title: {
            text: '<b>World Happiness</b><br>2015 - 2017'
      },
      geo: {
          showframe: false,
          showcoastlines: false,
          projection:{
             type: 'orthographic'
          }
      },
      updatemenus: [{
        x: 0.85,
        y: 1.15,
        xref: 'paper',
        yref: 'paper',
        yanchor: 'top',
        active: 0,
        showactive: true,
        buttons: [{
            method: 'restyle',
            args: ['transforms[0].aggregations[0].func', 'avg'],
            label: 'Avg'
        }, {
            method: 'restyle',
            args: ['transforms[0].aggregations[0].func', 'sum'],
            label: 'Sum'
        }, {
            method: 'restyle',
            args: ['transforms[0].aggregations[0].func', 'min'],
            label: 'Min'
        }, {
            method: 'restyle',
            args: ['transforms[0].aggregations[0].func', 'max'],
            label: 'Max'
        }, {
            method: 'restyle',
            args: ['transforms[0].aggregations[0].func', 'mode'],
            label: 'Mode'
        }, {
            method: 'restyle',
            args: ['transforms[0].aggregations[0].func', 'median'],
            label: 'Median'
        }, {
            method: 'restyle',
            args: ['transforms[0].aggregations[0].func', 'first'],
            label: 'First'
        }, {
            method: 'restyle',
            args: ['transforms[0].aggregations[0].func', 'last'],
            label: 'Last'
        }]
  }]
    };

    Plotly.newPlot('myDiv', data, layout);

});