Chart.js same Y axis on left and right

Question

I have a working chart that I made using chart.js, and by default the Y axis is on the left, but I would like to have Y axis data on both sides

I know I can change sides using:

yAxes: [{
 position: 'right'
}]

but I would like same Y axis data on both sides. Any idea how to do that?

Thank you for your help.

Answer 1

Here's one way:

your yAxes is an Array [] with objects in it {}, so you need to add another yScale to it, here an example:

  scales: {
   yAxes: [{
    display: true,
    position: 'right',
    ticks: {
     beginAtZero: true
    }
   }, {
    display: true,
    position: 'left',
    ticks: {
     beginAtZero: true,
     max: 45,
     min: 0,
     stepSize: 5
    }
   }]
 }

Live demo: Chart.js Double yAxis

Notice you have to reformat one of the new axis to conform to the default, you might need to format both or tie those parameters to your data if it's going to change depending on what you want it to look like.