Regression Line coordinates

[frjariello]

Hello,
I'm using the Scatter and Bubble charts with the Regression Line, and is all ok, but now I need to know the coordinates of the start and end points of the regression line represented (and if possible also the equation), as I should redraw it on another graph (for comparison), you can obtain them?

 

Thanks

 

bye bye

Edited November 18, 2013 by frjariello

[Guest Sumedh]

Hello,

 

There are several methods to calculate and draw regression lines.

 

The scatter and bubble charts of FusionCharts XT uses Linear Regression and least-squares or least absolute deviation method.

 

This method calculates the best-fitting straight-line for the observed data by minimizing the sum of the squares of the vertical deviations from each data point to the line (if a point lies on the fitted line exactly, then its vertical deviation is 0).

 

Because the deviations are first squared, then summed, there are no cancellations between positive and negative values.

 

For more information, please refer this link: http://docs.fusioncharts.com/charts/contents/?AttDesc/BubbleScatter.html

[frjariello]

For more information, please refer this link: http://docs.fusioncharts.com/charts/contents/?AttDesc/BubbleScatter.html

 

Thanks for the reply.

I've already read the link, and can represent the regression line in the chart, with showRegressionLine = '1 '.

Now I would need to know the coordinates and the equation of the regression line represented, in order to represent it in another chart. There is no way to obtain them?

 

Thanks again

 

bye bye

Edited November 24, 2013 by frjariello