//
//Liner Regression command
//

//Syntax
reg [target] by [explanations];
//Option
//Set intercept value.  intercept=none means that intercept value is calculated.
intercept=none  //(defalut)
intercept=0


//Example 1 3D regression.
get iris.csv@;




//View plot property of iris by species.
plot PetalL SepalL SepalW by Species;



//Execute liner regression that makes 2D surface.
reg PetalL by SepalL SepalW;






//get regression coefficent from output.
get freq@ana;

//Seting only parameter 'reg', plot regression surface with 3D data.
plot reg;




Rotate coordination to view all node position on regression surface.



//Example 2 4D regression.
get iris.csv@;

//Execute liner regression in 4D.
reg PetalL by SepalL SepalW PetalW;






//get regression coefficent from output.
get freq@ana;

//As regression is 3D, cannot view regression cube.
//So plot real and model target data of each records for comparison only. 
plot reg;

plot real and model target data of each records. because regression cube cannot be viewed.