Creating a line of best fit for BIRT scatter chart

edavis

<p>I'm referring to this post below</p>
<p> </p>
<p><a data-ipb='nomediaparse' href='http://developer.actuate.com/community/forum/index.php?/files/file/783-creating-a-line-of-best-fit-line-in-a-scatter-chart/'>http://developer.actuate.com/community/forum/index.php?/files/file/783-creating-a-line-of-best-fit-line-in-a-scatter-chart/</a></p&gt;
<p> </p>
<p>There are two issues with this script</p>
<p>1, When I plot the "best fit line" on scatter chart the line is not straight unless there is a lot of data points</p>
<p>2, when I add additional Y series grouping the line doesn't plot at all</p>
<p> </p>
<p>Can someone stir me to right direction </p>