Having both horizontal and verticle marker on a Line Chart

quachtoanlong
quachtoanlong Member
edited May 29 in APIs & Domo Developer

Hi guys,

As in the title, is there any way to add two reference lines, one verticle and one horizontal in a DOMO line chart? The solution can be DDX or the default line chart.

From that, is there any way to add the third horizontal… if there are ways…

Thanks,

Long

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Best Answer

  • ArborRose
    ArborRose Coach
    Answer ✓

    I don't know about the default line chart. But I can do it in a brick.

    <html>
    <head>
      <script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
      <script src="https://cdn.jsdelivr.net/npm/chartjs-plugin-annotation"></script>
    </head>
    <body>
      <canvas id="myChart"></canvas>
    </body>
    </html>
    
        const ctx = document.getElementById('myChart').getContext('2d');
        const myChart = new Chart(ctx, {
          type: 'line',
          data: {
            labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'],
            datasets: [{
              label: 'Dataset',
              data: [65, 59, 80, 81, 56, 55, 40],
              borderColor: 'rgba(75, 192, 192, 1)',
              borderWidth: 1,
              fill: false
            }]
          },
          options: {
            scales: {
              x: {
                beginAtZero: true
              },
              y: {
                beginAtZero: true
              }
            },
            plugins: {
              annotation: {
                annotations: {
                  verticalLine: {
                    type: 'line',
                    xMin: 3,  // Position on the X axis
                    xMax: 3,
                    borderColor: 'rgba(255, 99, 132, 1)',
                    borderWidth: 2
                  },
                  horizontalLine: {
                    type: 'line',
                    yMin: 70,  // Position on the Y axis
                    yMax: 70,
                    borderColor: 'rgba(54, 162, 235, 1)',
                    borderWidth: 2
                  }
                }
              }
            }
          }
        });
    

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Answers

  • ArborRose
    ArborRose Coach
    Answer ✓

    I don't know about the default line chart. But I can do it in a brick.

    <html>
    <head>
      <script src="https://cdn.jsdelivr.net/npm/chart.js"></script>
      <script src="https://cdn.jsdelivr.net/npm/chartjs-plugin-annotation"></script>
    </head>
    <body>
      <canvas id="myChart"></canvas>
    </body>
    </html>
    
        const ctx = document.getElementById('myChart').getContext('2d');
        const myChart = new Chart(ctx, {
          type: 'line',
          data: {
            labels: ['January', 'February', 'March', 'April', 'May', 'June', 'July'],
            datasets: [{
              label: 'Dataset',
              data: [65, 59, 80, 81, 56, 55, 40],
              borderColor: 'rgba(75, 192, 192, 1)',
              borderWidth: 1,
              fill: false
            }]
          },
          options: {
            scales: {
              x: {
                beginAtZero: true
              },
              y: {
                beginAtZero: true
              }
            },
            plugins: {
              annotation: {
                annotations: {
                  verticalLine: {
                    type: 'line',
                    xMin: 3,  // Position on the X axis
                    xMax: 3,
                    borderColor: 'rgba(255, 99, 132, 1)',
                    borderWidth: 2
                  },
                  horizontalLine: {
                    type: 'line',
                    yMin: 70,  // Position on the Y axis
                    yMax: 70,
                    borderColor: 'rgba(54, 162, 235, 1)',
                    borderWidth: 2
                  }
                }
              }
            }
          }
        });
    

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    ** Did this solve your problem? Accept it as a solution! **

  • Thank you very much, Arbor.

    Apologize first for this following basic question, but do you know how to do it using the Phoenix brick template?

  • Sorry, I don't know what a Phoenix brick template is.

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    ** Did this solve your problem? Accept it as a solution! **

  • Apologize for the confusion. I was referring to Domo’s native library. I captured this in the DOMO appstore:

    https://amro-asia-org.domo.com/appstore/details/2FF0546ED3BE62B56BAA98A96188FEF2755B4A37C77A4077B7170B5CACC04904?origin=search