Least Square

learnbirt

Hi Michael,

I have the following code to calculate the value of R2.

i am not able to understand the purpose of this code and what is R2,please explain as i would be needing it.

name="beforeFactory"><![CDATA[LeastSquare = new Packages.LeastSquares2();]]


name="beforeOpen"><![CDATA[R2=0;
FlagCounter =0;
MaxX =0;
MaxY =0;

var y=0;


name="beforeClose"><![CDATA[importPackage(Packages.java.lang);
importPackage(Packages.java.text);

R2 =0;
if(FlagCounter>0) {
R2 = LeastSquare.R2();

LeastSquare.CalculateScales();
}

reportContext.setPersistentGlobalVariable("R2",new Float(R2));]]>



name="onFetch"><![CDATA[importPackage(Packages.java.lang);

y=row.FirstValue;
x=row.SecondValue;

if(x!=null && y!=null){
if(x>MaxX)
MaxX = x;
if(y>MaxY)
MaxY = y;

LeastSquare.addPoint(x,y);
FlagCounter++;

}


Thanks
birtq

mwilliams

Hi birtq,

Can you explain a little further your issue and what you're looking for? Thanks.