Hola, ¿Pero el problema que tienes es de "elegancia del código" como indicas en StackOverflow? o ¿de performance porque al subir el número de clases el número total de combinaciones te explota?...
En cuanto a las asignaciones de los profesores, ¿quieres tener todas las posibles asignaciones? ¿un solo caso de asignación?... Saludos, Carlos Ortega www.qualityexcellence.es 2015-07-13 15:23 GMT+02:00 Ignacio Martinez <ignaci...@gmail.com>: > Hola, > > Esta pregunta la hice en stackoverflow > < > http://stackoverflow.com/questions/31137940/randomly-assign-teachers-to-classrooms-imposing-restrictions/31143808#31143808 > >pero > nadie pudo contestarla. > > 1. Quiero generar N escuelas, con G grados y C divisiones. > 2. Quiero asignar cada uno de T maestros a 2 divisiones en un grado y > escuela > > Si tengo C=4 divisiones, puedo lograr lo que quiero con este código: > > library(randomNames) > set.seed(6232015) > n.schools <-20 > n.grades <- 3 > n.classrooms <- 4 > total.classrooms <- n.classrooms*n.grades*n.schools > > gen.names <- function(n, which.names = "both", name.order = "last.first"){ > names <- unique(randomNames(n=n, which.names = which.names, > name.order = name.order)) > need <- n - length(names) > while(need>0){ > names <- unique(c(randomNames(n=need, which.names = which.names, > name.order = name.order), names)) > need <- n - length(names) > } > return(names)} > #Generates teachers data frame > n.teachers=total.classrooms/2 > gen.teachers <- function(n.teachers){ > Teacher.ID <- gen.names(n = n.teachers, name.order = "last.first") > Teacher.exp <- runif(n = n.teachers, min = 1, max = 30) > Teacher.Other <- sample(c(0,1), replace = T, prob = c(0.5, 0.5), > size = n.teachers) > Teacher.RE <- rnorm(n = n.teachers, mean = 0, sd = 1) > Teachers <- data.frame(Teacher.ID, Teacher.exp, Teacher.Other, > Teacher.RE) %>% mutate(Teacher.ID=as.character(Teacher.ID)) > return(Teachers)} > Teachers <- gen.teachers(n.teachers = n.teachers) > str(Teachers$Teacher.ID) > #Make a ‘schoolGrade’ object and then reshape > > schoolGrade <- expand.grid(grade = c(3,4,5), > School.ID = paste0(gen.names(n = n.schools, > which.names = "last"), > ' School')) > # assign each of T teachers to 2 classrooms within a single school and > grade > cuttoff1<-n.teachers/2 > schoolGrade$A <- Teachers$Teacher.ID[1:cuttoff1] > schoolGrade$B <- Teachers$Teacher.ID[1:cuttoff1] > schoolGrade$C <- Teachers$Teacher.ID[(cuttoff1+1):n.teachers] > schoolGrade$D <- Teachers$Teacher.ID[(cuttoff1+1):n.teachers] > > library(tidyr) > schoolGrade <- gather(schoolGrade, Classroom, Teacher.ID, A:D) %>% > full_join(Teachers, by="Teacher.ID") > > El problema es si quiero incrementar n.classroom incrementar de 4 a 20 (en > lugar de A a D tener de A a T > > Gracias por la ayuda! > > [[alternative HTML version deleted]] > > _______________________________________________ > R-help-es mailing list > R-help-es@r-project.org > https://stat.ethz.ch/mailman/listinfo/r-help-es > -- Saludos, Carlos Ortega www.qualityexcellence.es [[alternative HTML version deleted]] _______________________________________________ R-help-es mailing list R-help-es@r-project.org https://stat.ethz.ch/mailman/listinfo/r-help-es