CODEWITHSUNDEEP
angularchart.jsangular7
WasiF
WasiF

Reputation: 28919

How to zoom charts in chart.js using angular 7

I have a line-chart and I want to zoom it but unable to do it. Here is my code

let ctx = document.getElementById('myChart')

let chart = new Chart(ctx, {
      type: 'line',
      data: {
        labels: ["Red", "Blue", "Yellow", "Green", "Purple", "Orange"],
        datasets: [{
          label: '# of Votes',
          data: [7, 10, 3, 5, 2, 3],
          fill: true,
          backgroundColor: 'orange',
          borderColor: 'green',
          pointBorderColor: 'red',
          pointBackgroundColor: 'red'
        }]
      },
      options: {
        plugins: {
          pan: {
            enabled: true,
            mode: 'x',
            onPan: function () { console.log('I was panned!!!'); }
          },
          zoom: {
            enabled: true,
            drag: true,
            mode: 'x',
            onZoom: function () { console.log('I was zoomed!!!'); }
          },
        },
        responsive: true,
      }
    })
<script src="https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.3/Chart.min.js"></script>

<div class="row">
    <div class="col d-flex justify-content-center">
        <canvas id="myChart" style="max-width:95%;height:300px !important;"></canvas>
    </div>
</div>

I have used the following plugin for zooming

https://github.com/chartjs/chartjs-plugin-zoom#readme

I have also included hammerjs and angular/animations in my project.

Update

Why pan and zoom are unknown to typescript?

// package.json
"chart.js": "^2.7.3",
"chartjs-plugin-zoom": "^0.6.6",

enter image description here

Upvotes: 8

Views: 15721

Answers (4)

Thức Trần
Thức Trần

Reputation: 137

I had used and work fine (Angular 12 - Chartjs 3.5.0):
1.

npm i chart.js -s
npm i chartjs-plugin-zoom -s

.2

import 'hammerjs';
import zoomPlugin from 'chartjs-plugin-zoom';
Chart.register(zoomPlugin);

render: Chart;
this.render = new Chart(ctx, {type: 'line',
  data: {
    labels: xxxxxxxx,
    datasets: [
    ......
  ]
  },
  options: {
    responsive: true,
    interaction: {
      mode: 'index',
      intersect: false,
    },
    plugins: {
      zoom: {
        zoom: {
          wheel: {
            enabled: true,
          },
          pinch: {
            enabled: true
          },
          mode: 'xy',
        },
        pan: {
          enabled: true,
          mode: 'xy',
        },
      }
    }
  },

}

Upvotes: 1

Naima Sahih
Naima Sahih

Reputation: 116

First you need to Run npm install chartjs-plugin-zoom to install with npm then do import chartjs-plugin-zoom in your .ts file and write plugin like this :

    plugins: {
      zoom: {
        pan: {
          enabled: true,
          mode: 'x'
        },
        zoom: {
          enabled: true,
          mode: 'x'
        }
      }
    },

Upvotes: 10

Vinodh Ram
Vinodh Ram

Reputation: 809

Install chart.js and chartjs-plugin-zoom

npm i chart.js -s
npm i chartjs-plugin-zoom -s

In Component.ts file import Chart and chartjs-plugin-zoom

import { Chart } from 'chart.js';
import 'chartjs-plugin-zoom';

Logic to load chart

let myChart = new Chart('mapId', {
type: 'bar',
data: {
    labels: ['Red', 'Blue', 'Yellow', 'Green', 'Purple', 'Orange'],
    datasets: [{
        label: '# of Votes',
        data: [12, 19, 3, 5, 2, 3],
        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
    }]
},
options: {
    scales: {
        yAxes: [{
            ticks: {
                beginAtZero: true
            }
        }]
    }
},
    plugins: {
      zoom: {
        pan: {
          enabled: true,
          mode: 'xy'
        },
        zoom: {
          enabled: true,
          mode: 'xy'
        }
      }
    }
  }
});
myChart.render();

In Component.html

<canvas id="mapId"></canvas>

Upvotes: 5

Kunal Khivensara
Kunal Khivensara

Reputation: 1669

The zoom options should be configured under the options not options.plugins setting. 

  options: {
    pan: {
      enabled: true,
      mode: 'x',     
    },
    zoom: {
      enabled: true,         
      mode: 'x',     
    },
    responsive: true
  }

See this fiddle -> http://jsfiddle.net/3sx8zon2/2/

Upvotes: 6

Related Questions