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To render the dataPoint with one array for x value and other array for y values, you need to parse the arrays according to data format accepted by CanvasJS. Check out the below code snippet for parsing the arrays.

function parseDataPoints() {
  for (var i = dps.length; i < dateArray.length; i++)
      x: new Date(dateArray[i]),
      y: numberArray[i]

Please take a look at this JSFiddle for complete code sample.

Chart with user input data and parsing from array

Sanjoy Debnath
Team CanvasJS