breakpoints: error deep in the stack when h > 1 and not integer #5
Description
If breakpoints() is given e.g. h=365.25/16, it breaks down with an error on this line: https://github.com/appelmar/strucchange/blob/78d57129b45c0c5cf28cc69a3b19956ee0ac2486/R/breakpoints.R#L266
It assumes that "index" and "my.index" are integers, but in fact they are floats in this case, and the two variables are offset from one another, causing an error as as.character(i) matches no indices.
Either the function should stop with an error early stating that h should be integer (that is what is stated in the help file), or it should give a warning and round the h to the nearest integer.