Calculates specificity and sensitivity
calcular.indicadores(i.current, i.umbral.pre, i.umbral.pos = NA,
i.intensidades, i.duracion.intensidad = 10, i.equal = F,
i.metodo.calculo = "default", i.semanas.por.encima = 1,
i.valores.parametro.deteccion = seq(0.1, 5, 0.1), i.output = ".",
i.graph = F, i.graph.name = "")