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HTML

              
                <div id='plot' style='width: 80%; height: 500px'></div>
              
            
!

CSS

              
                
              
            
!

JS

              
                let x = [];
let left = []; //will be the plot on the left half of the violin
let right = []; //will be the plot on the right side of the violin

//just make some dummy distributions that plot nicely
for (let i = 0; i < 200; i++) {
  if (i < 100) {
    x.push('a');
    left.push(Math.sin(i));
    right.push(0.5*Math.sin(i));
  } else {
    x.push('b');
    left.push(Math.sqrt(i)/10 - 1);
    right.push(Math.abs(Math.sin(i)));
  }
}

let data = [{
    x: x,
    y: left,
    type: 'violin',
    side: 'negative', //negative side means left for vertical violin plots
    name: 'left one'
  }, {
    x: x,
    y: right,
    type: 'violin',
    side: 'positive', //positive side means right for vertical violin plots
    name: 'right one'
}];

Plotly.react('plot', data);
              
            
!
999px

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