Setting the Title, Legend Entries, and Axis Titles in JavaScript

How to set the title, legend-entries, and axis-titles in javascript D3.js-based charts.


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var trace1 = {
  x: [0, 1, 2, 3, 4, 5, 6, 7, 8],
  y: [0, 1, 2, 3, 4, 5, 6, 7, 8],
  name: 'Name of Trace 1',
  type: 'scatter'
};
var trace2 = {
  x: [0, 1, 2, 3, 4, 5, 6, 7, 8],
  y: [1, 0, 3, 2, 5, 4, 7, 6, 8],
  name: 'Name of Trace 2',
  type: 'scatter'
};
var data = [trace1, trace2];
var layout = {
  title: {
    text:'Plot Title',
    font: {
      family: 'Courier New, monospace',
      size: 24
    },
    xref: 'paper',
    x: 0.05,
  },
  xaxis: {
    title: {
      text: 'x Axis',
      font: {
        family: 'Courier New, monospace',
        size: 18,
        color: '#7f7f7f'
      }
    },
  },
  yaxis: {
    title: {
      text: 'y Axis',
      font: {
        family: 'Courier New, monospace',
        size: 18,
        color: '#7f7f7f'
      }
    }
  }
};

Plotly.newPlot('myDiv', data, layout);
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0246802468
Name of Trace 1Name of Trace 2Plot Titlex Axisy Axis

Set automargin to true to allow the title to push the figure margins. With yref set to paper, automargin expands the margins to make the title visible, but doesn't push outside the container. With yref set to container, automargin expands the margins, but doesn't overlap with the plot area, tick labels, and axis titles.

var trace1 = {
  x: [1952, 1957, 1962, 1967, 1972, 1977, 1982, 1987, 1992, 1997, 2002, 2007],
  y: [69.39,
      70.26,
      71.24,
      71.52,
      71.89,
      72.22,
      73.84,
      74.32,
      76.33,
      77.55,
      79.11,
      80.204
  ],
  type: 'scatter'
};
var trace2 = {
  x: [1952, 1957, 1962, 1967, 1972, 1977, 1982, 1987, 1992, 1997, 2002, 2007],
  y: [69.12,
      70.33,
      70.93,
      71.1,
      71.93,
      73.49,
      74.74,
      76.32,
      77.56,
      78.83,
      80.37,
      81.235
  ],
  type: 'scatter'
};
var data = [trace1, trace2];
var layout = {
  title: {
      text: 'Population',
      font: {
          family: 'Courier New, monospace',
          size: 70
      },
      yref: 'paper',
      automargin: true,
  },
  showlegend: false
};

Plotly.newPlot('myDiv', data, layout);
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195019601970198019902000201070727476788082
Population