//
//tmtrend command. 
//
//This command is used for fitting unsteady wave using spline curve.
//

//Syntax 
tmtrend wave/
(options)
;

//Options
dim=nn       //nn is number of degree(defalut 5) fittig spline curve. More higher is more overfitting.
predict=xx   //xx is period of spline curve prediction

//Example 
get stockdata.csv@;
plot line data1;




if(# > 229) delrec //This wave has 250 steps,and 229 steps are trainning step. 
put train;

//use tmtrend command for fitting 229 step and predicting 21 step using 4 degree spline.
get train;
tmtrend data1/
dim=4
period=21
;
anaput traintrend;

get traintrend;
plot line data1 data1_T dataTC;
//data1 is original wave;
//data1_T is the spline curve fitting orignal wave;
//dataTC is different value meaning data1 - data_T.