Bug: when keep adding a constant value to the TimeSeries

[Jesministrator]

please try to run the codes below:
`<script type="text/javascript">

  // Random data
  var line1 = new TimeSeries();
  //var line2 = new TimeSeries();
  setInterval(function() {
	  
    line1.append(new Date().getTime(), 0.6);
    //line2.append(new Date().getTime(), 0.5);
  }, 1000);

  var smoothie = new SmoothieChart({ grid: { strokeStyle: 'rgb(125, 0, 0)', fillStyle: 'rgb(60, 0, 0)', lineWidth: 1, millisPerLine: 250, verticalSections: 6 } });
  smoothie.addTimeSeries(line1, { strokeStyle: 'rgb(0, 255, 0)', fillStyle: 'rgba(0, 255, 0, 0.4)', lineWidth: 3 });
  //smoothie.addTimeSeries(line2, { strokeStyle: 'rgb(255, 0, 255)', fillStyle: 'rgba(255, 0, 255, 0.3)', lineWidth: 3 });

  smoothie.streamTo(document.getElementById("mycanvas"), 1000);
</script>`

[drewnoakes]

What exactly is the bug you're experiencing?

[fernandojsg]

I'm experiencing the same issue, after a while adding the same value, the graph just disappear and stop painting

[drewnoakes]

Try setting a fixed min/max range on the y-axis. If all values are the same, it will auto-calculate a zero range for y-values which probably throws off the rendering.