Charts advanced usage

Bootstrap 5 Charts advanced usage

This documentation provides examples of advanced chart usage.

Note: Read the API tab in the basic chart docs to find all available options and advanced customization

Options

In most cases, working with advanced charts is related to the handling of options.

MDB provides default options for each chart - you can easily change that by passing an object with your custom options to the Chart component. 

import React from 'react';
import { MDBChart } from 'mdb-react-ui-kit';

export default function App() {
  return (
    <MDBChart
      type='bar'
      options={{
        scales: {
          x: {
            ticks: {
              color: '#4285F4',
            },
          },
          y: {
            ticks: {
              color: '#f44242',
            },
          },
        },
      }}
      data={{
        labels: ['January', 'February', 'March', 'April', 'May', 'June'],
        datasets: [
          {
            label: 'Traffic',
            data: [30, 15, 62, 65, 61, 6],
            backgroundColor: [
              'rgba(255, 99, 132, 0.2)',
              'rgba(54, 162, 235, 0.2)',
              'rgba(255, 206, 86, 0.2)',
              'rgba(75, 192, 192, 0.2)',
              'rgba(153, 102, 255, 0.2)',
              'rgba(255, 159, 64, 0.2)',
            ],
            borderColor: [
              'rgba(255,99,132,1)',
              'rgba(54, 162, 235, 1)',
              'rgba(255, 206, 86, 1)',
              'rgba(75, 192, 192, 1)',
              'rgba(153, 102, 255, 1)',
              'rgba(255, 159, 64, 1)',
            ],
            borderWidth: 1,
          },
        ],
      }}
    />
  );
}

Mixed

With MDB it is possible to create mixed charts that are a combination of two or more different chart types. A common example is a bar chart that also includes a line dataset. 

import React from 'react';
import { MDBChart } from 'mdb-react-ui-kit';

export default function App() {
  return (
    <MDBChart
      type='bar'
      data={{
        labels: ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday '],
        datasets: [
          // First dataset (bar)
          {
            label: 'Impressions',
            data: [2112, 2343, 2545, 3423, 2365, 1985, 987],
            order: 2,
          },
          // Second dataset (line)
          {
            label: 'Impressions (absolute top) %',
            data: [211, 2543, 2745, 3123, 2765, 1485, 587],
            type: 'line',
            order: 1,
            backgroundColor: 'rgba(66, 133, 244, 0.0)',
            borderColor: '#94DFD7',
            borderWidth: 2,
            pointBorderColor: '#94DFD7',
            pointBackgroundColor: '#94DFD7',
            lineTension: 0.0,
          },
        ],
      }}
    />
  );
}

Data labels

Set datalabels option to true to display values directly on a graph. 

import React from 'react';
import { MDBChart } from 'mdb-react-ui-kit';

export default function App() {
  const dataLabelsData = {
    labels: ['January', 'February', 'March', 'April', 'May'],
    datasets: [
      {
        label: 'Traffic',
        data: [30, 45, 62, 65, 61],
        backgroundColor: [
          'rgba(63, 81, 181, 0.5)',
          'rgba(77, 182, 172, 0.5)',
          'rgba(66, 133, 244, 0.5)',
          'rgba(156, 39, 176, 0.5)',
          'rgba(233, 30, 99, 0.5)',
        ],
      },
    ],
  };

  const dataLabelsOptions = {
    plugins: {
      datalabels: {
        formatter: (value: any) => {
          let sum = 0;
          // Assign the data to the variable and format it according to your needs
          const dataArr = dataLabelsData.datasets[0].data;
          dataArr.map((data) => {
            sum += data;
          });
          const percentage = ((value * 100) / sum).toFixed(2) + '%';
          return percentage;
        },
        color: 'white',
        labels: {
          title: {
            font: {
              size: '14',
            },
          },
        },
      },
    },
  };

  return (
    <MDBChart type='pie' data={dataLabelsData} options={dataLabelsOptions} datalabels />
  );
}

Double Y axis

In the example below we created chart with double Y axis with 2 datasets, each one with completely different data range.

Such a construction requires a scale adjustment, so the left axis is assigned and adjusted to the first dataset, and the right axis to the second dataset. 

import React from 'react';
import { MDBChart } from 'mdb-react-ui-kit';

export default function App() {
  return (
    <MDBChart
      type='line'
      data={{
        labels: ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday '],
        datasets: [
          {
            label: 'Impressions',
            data: [2112, 2343, 2545, 3423, 2365, 1985, 987],
            order: 1,
            yAxisID: 'y',
          },
          {
            label: 'Impressions (absolute top) %',
            yAxisID: 'y2',
            data: [1.5, 2, 0.5, 3, 1.2, 4, 3.4],
            type: 'line',
            order: 0,
            backgroundColor: 'rgba(66, 133, 244, 0.0)',
            borderColor: '#94DFD7',
            borderWidth: 2,
            pointBorderColor: '#94DFD7',
            pointBackgroundColor: '#94DFD7',
            lineTension: 0.0,
          },
        ],
      }}
      options={{
        scales: {
          y1: {
            stacked: false,
            position: 'left',
            grid: {
              drawOnChartArea: false,
              drawBorder: false,
              drawTicks: false,
            },
            ticks: {
              display: false,
            },
          },
          y2: {
            stacked: false,
            position: 'right',
            grid: {
              drawOnChartArea: false,
            },
            ticks: {
              beginAtZero: true,
            },
          },
        },
      }}
    />
  );
}

Funnel

Example of horizontal bar chart with custom options and labels formatting (calculating integers numbers into percentages).

This data visualization is often used to visualize the flow of the website traffic.

import React from 'react';
import { MDBChart } from 'mdb-react-ui-kit';

export default function App() {
  const funnelData = {
    labels: ['Product views', 'Checkout', 'Purchases'],
    datasets: [
      {
        data: [2112, 343, 45],
        barPercentage: 1.24,
      },
    ],
  };

  const funnelOptions = {
    indexAxis: 'y',
    scales: {
      x: {
        gridLines: {
          offsetGridLines: true,
        },
      },
    },
    plugins: {
      legend: {
        display: false,
      },
      datalabels: {
        formatter: (value: any) => {
          let sum = 0;
          const dataArr = funnelData.datasets[0].data;
          dataArr.map((data) => {
            sum += data;
          });
          const percentage = ((value * 100) / sum).toFixed(2) + '%';
          return percentage;
        },
        color: '#4f4f4f',
        labels: {
          title: {
            font: {
              size: '13',
            },
            anchor: 'end',
            align: 'right',
          },
        },
      },
    },
  };

  return (
    <MDBChart type='bar' data={funnelData} options={funnelOptions} datalabels />
  );
}

Formatting values on the Y axes

In the example below we simply add "$" before each value on the Y axis.

import React from 'react';
import { MDBChart } from 'mdb-react-ui-kit';

export default function App() {
  return (
    <MDBChart
      type='bar'
      data={{
        labels: ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday '],
        datasets: [
          {
            label: 'Sales',
            data: [2112, 2343, 2545, 3423, 2365, 1985, 987],
          },
        ],
      }}
      options={{
        scales: {
          y: {
            ticks: {
              callback: function (value: any) {
                return '$' + value;
              },
            },
          },
        },
      }}
    />
  );
}

Formatting values in the tooltips

In the example below we simply add "$" before each value displayed in the tooltips.

Hover the line of the chart to see the tooltip.

import React from 'react';
import { MDBChart } from 'mdb-react-ui-kit';

export default function App() {
  return (
    <MDBChart
      type='line'
      data={{
        labels: ['Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday '],
        datasets: [
          {
            label: 'Sales',
            data: [2112, 2343, 2545, 3423, 2365, 1985, 987],
          },
        ],
      }}
      options={{
        plugins: {
          tooltip: {
            callbacks: {
              label: function (value: any) {
                return `$ ${value.parsed.y}`;
              },
            },
          },
        },
      }}
    />
  );
}

Double datasets in a bar chart

Example of the double datasets in a bar chart.

import React from 'react';
import { MDBChart } from 'mdb-react-ui-kit';

export default function App() {
  return (
    <MDBChart
      type='bar'
      data={{
        labels: ['Desktop', 'Mobile', 'Tablet'],
        datasets: [
          {
            label: 'Users',
            data: [510, 653, 255],
          },
          {
            label: 'Page views',
            data: [1251, 1553, 1355],
            backgroundColor: '#94DFD7',
            borderColor: '#94DFD7',
          },
        ],
      }}
      options={{
        scales: {
          y: {
            stacked: false,
            ticks: {
              beginAtZero: true,
            },
          },
          x: {
            stacked: false,
          },
        },
      }}
    />
  );
}

Async data

Example of the fetching data from the JSON file.

import React, { useEffect, useState } from 'react';
import { MDBChart } from 'mdb-react-ui-kit';

export default function App() {
  const [asyncData, setAsyncData] = useState({});

  useEffect(() => {
    fetch(
      'https://disease.sh/v3/covid-19/historical/Poland?lastdays=all'
    )
      .then((data) => data.json())
      .then((data) => {
        const dataPoland = data.timeline['cases'];
        const dataset = Object.entries(dataPoland).map((item) => item[1]);
        const labels = Object.keys(dataPoland);

        chartInstance.update({
          labels,
          datasets: [
            {
              color: '#FFCDD2',
              data: dataset,
              label: 'Number of cases',
              pointRadius: 0,
              borderColor: dataset.color,
            },
          ],
        });
      });
  }, []);

  return (
    <MDBChart type='bar' data={asyncData} />
  );
}