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...amma * X2 + error, siendo X1 = cos(2*pi*t/T) y X2 = sin(2*pi*t/T) En este caso (Cosinor simple) el modelado lo llevo a cabo del siguiente modo: lm( y ~ X1 + X2) Para el caso de componentes múltiples: Y = M + ?Aj * cos(2*pi*t/Tj + phij) + error Si Tj conocidos: Y = M + ?(betaj*X1j + gammaj * X2j) + error Modelado: y ~ x1tot+ x2tot, donde los xtot (x totales) resultan de la suma de los parciales (donde cada parcial corresponde a un Tj). Sin embargo, en el caso del modelo generalizado (componente cuadrática, cúbica, etc.): Y = M + alfa1*t + alfa2*t2 + (?Aj * cos(2*pi*t/Tj + phij)) + err...

...body, This has been causing me some trouble: I want to combine several lists of pairs into a single?vector but keep the pairs together. The lists are of the form: (1)?x1 x2 x3... N? (2) y1 y2 y3..? N I would like to keep it this way, simply appending one list to another, e.g. (1) x1i x2i... x1j x2j... N (2) etc. A?method like c(...) does not achieve this. It creates a single list, disregarding the pairs. Is there a more efficient way of doing it? Thanks! Oliver Marshall [[alternative HTML version deleted]]