Problem with multiple line chart

[lalit_lmc]

Hi all,

I am trying to render multiple line charts. However not all the line charts has all the values so I wanted to show the line only for the values which are present. I am able to get the chart by passing null for those values:

if (value present) {
this.lineDataValues.get(i).add(row, value);
} else {
this.lineDataValues.get(i).add(row, null);
}

Pl. see the attached picture. The graph renders correctly however there are areas of the graph which show some unintended behavior.

Any suggestion would be helpful.

thanks in advance