ogg: an object of class "segmented", returned by any segmented method.
parm: the segmented variable whose intercepts have to be computed. If missing all the segmented variables in the model are considered.
rev.sgn: vector of logicals. The length should be equal to the length of parm, but it is recycled otherwise. When TRUE it is assumed that the current parm is `minus' the actual segmented variable, therefore the order is reversed before printing. This is useful when a null-constraint has been set on the last slope.
var.diff: Currently ignored as only point estimates are computed.
.vcov: The full covariance matrix of estimates. If unspecified (i.e. NULL), the covariance matrix is computed internally by vcov(ogg).
.coef: The regression parameter estimates. If unspecified (i.e. NULL), it is computed internally by coef(ogg).
digits: controls number of digits in the returned output.
...: Further arguments to be passed on to vcov.segmented, such as var.diff and is. See Details in vcov.segmented.
Details
A broken-line relationship means that a regression equation exists in the intervals $min(x)$ to $psi1$', psi1 to psi2', and so on. intercept computes point estimates of the intercepts of the different regression equations for each segmented relationship in the fitted model.
Returns
intercept returns a list of one-column matrices. Each matrix represents a segmented relationship.