# Two phase linear regression model in matlab

The following Matlab project contains the source code and Matlab examples used for two phase linear regression model.
INPUTS:
x - vector row with 'x' values
y - vector row with 'y' values
r - expected 'x'-coordinate of break point
if r is empty it is calculated during
the optimisation
p - if p is equal to 1 the fit is plotted
OUTPUT:
th - estimated paremeters of the regression
lines
y_1 = th(1) + th(2) * x
y_2 = th(3) + th(4) * x
r - the estimated break point