function [int,point,b,det,corr] = linforc(t,y,timef,sig)
// Linear estimate of future process
// t ... individual times as independent variable x - column vector
// y ... values in column
// timef ... forecasting times in column
// sig ... significance level of interval estimates (default 0.05)
// corr ... value of correlation coefficient
// det ... coefficient of determination
// b ... estimates of regression parameters [b0 b1]
// point ... point estimates of future process in timef
// int ... interval estimates [lower upper]
// Authors: Lukáš Malec and Hana Tvrdíková
// Date: $2015-12-17$
