Hello!
I am trying to do a segmented linear regression with the nl function and cond. The intention is to have two breakpoints and 3 segments, which means that 3 conditions are required. Can cond be nested within nl to apply more than 2 conditions? If not, what is the best way to approach such a regression when the segmentation depends upon 3 ranges of an x, rather than only 2? Thanks!
David
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