//
//Draw regressin line or squrare with data
//
//this plot command draws regression line or square.

//Syntax
plot reg;

//Option
title=title    //tilte strings
xlabel=x       //x axis strings
ylabel=y       //y axis strings
zlabel=z       //z axis strings
xrange=[xmin:xmax]
yrange=[ymin:ymax]
zrange=[zmin:zmax]
marker:type    //example:o,+,x,A,V,box,OF,BF,AF,VF,DF,PF
color:color    //example:black,red,blue,green,yellow
marksize:nn    //marker size
width:nn       //line size
regcolor:color //regression line color
xrotate=90     //vertical x tics

//Cation
//Befor this plot command,you have to read outputs of regression.
//if 2 dimension regression ex. y=a*x+b,plot reg draws line.
//if 3 dimension regression ex. z=a*x+b*y+c,plot reg draws square.

//Example is 3 dimension regresion square.
get iris@.csv;




//regression only setosa.
if(Species == "setosa") outrec;
reg SepalL by SepalW;

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

plot reg/
marker=OF
color=blue
regcolor=red
;



//regression in 3 dimension.
reg PetalL by SepalW SepalL;

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

//draws regression square.
plot reg/
marker=OF
color=blue
regcolor=red
;