//
//clear command
//
//This command clears any enviroments as follow.
//(1)current file close
//(2)project dir defined by prj command
//(3)accume variables defined by accume declare 
//(4)vector variables defined by vector declare
//
//(Quation)
//Clear command is needed befor generate record by for_loop and outrec.
//Otherwize for_loop and outrec is executed by each record of current file.
//

//Syntax
clear;

//
//Example   
//Generate normal distirbution which same distribution of original data 
//
//Read original data which are subject points 
get school.csv@;




//Test nomal distribution.
test normal x1 x2 y;





//View y distribution.
plot hist y;



//Get statistic and save propety to tempolay file.
statis x1 x2 y;




//Save statistic propertis to tempolay file to use by outlook function.
get freq@ana;
put f_stat;

//Clear current file which is statistic property data.
clear;

//Generate 100 record by for_loop and outrec.
for(i=1;i<=100;i++) {
  //Get average and std from file by outlook function.
  x1m=outlook(f_stat,"_items_","AVERAGE","y");
  x1v=outlook(f_stat,"_items_","STD","y");

  //Generate normal distribution by average and std
  yy = ranstd(x1m,x1v);
  
  //Generete record.
  outrec;
} 






//View yy statistic propety to compare with original statistic.
statis yy;




//View histgram by 100 records.
plot hist yy;