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#' d_tree UI Function
#'
#' @description A shiny Module.
#'
#' @param id,input,output,session Internal parameters for {shiny}.
#'
#' @noRd
#'
#' @importFrom shiny NS tagList
mod_d_tree_ui <- function(id){
ns <- NS(id)
opc_dt <- div(conditionalPanel(
"input['d_tree_ui_1-BoxDt'] == 'tabDtModelo' || input['d_tree_ui_1-BoxDt'] == 'tabDtProb' || input['d_tree_ui_1-BoxDt'] == 'tabDtProbInd'",
tabsOptions(heights = c(70), tabs.content = list(
list(
conditionalPanel(
"input['d_tree_ui_1-BoxDt'] == 'tabDtModelo'",
options.run(ns("runDt")), tags$hr(style = "margin-top: 0px;"),
fluidRow(col_6(numericInput(ns("minsplit.dt"), labelInput("minsplit"), 2, width = "100%",min = 1)),
col_6(numericInput(ns("maxdepth.dt"), labelInput("maxdepth"), 15, width = "100%",min = 0, max = 30, step = 1))),
fluidRow(col_12(selectInput(inputId = ns("split.dt"), label = labelInput("splitIndex"),selected = 1,
choices = list("gini" = "gini", "Entropia" = "information"))))),
conditionalPanel(
"input['d_tree_ui_1-BoxDt'] == 'tabDtProb'",
options.run(ns("runProb")), tags$hr(style = "margin-top: 0px;"),
div(col_12(selectInput(inputId = ns("cat.sel.prob"),label = labelInput("selectCat"),
choices = "", width = "100%"))),
div(col_12(numericInput(inputId = ns("by.prob"),label = labelInput("selpaso"), value = -0.05, min = -0.0, max = 1,
width = "100%")))
),
conditionalPanel(
"input['d_tree_ui_1-BoxDt'] == 'tabDtProbInd'",
options.run(ns("runProbInd")), tags$hr(style = "margin-top: 0px;"),
div(col_12(selectInput(inputId = ns("cat_probC"),label = labelInput("selectCat"),
choices = "", width = "100%"))),
div(col_12(numericInput(inputId = ns("val_probC"),label = labelInput("probC"), value = 0.5, min = 0, max = 1, step = 0.1,
width = "100%")))
)
)))))
tagList(
tabBoxPrmdt(
id = ns("BoxDt"), opciones = opc_dt,
tabPanel(title = labelInput("generatem"), value = "tabDtModelo",
withLoader(verbatimTextOutput(ns("txtDt")),
type = "html", loader = "loader4")),
tabPanel(title = labelInput("garbol"), value = "tabDtPlot",
withLoader(plotOutput(ns('plot_dt'), height = "55vh"),
type = "html", loader = "loader4")),
tabPanel(title = labelInput("predm"), value = "tabDtPred",
withLoader(DT::dataTableOutput(ns("dtPrediTable")),
type = "html", loader = "loader4")),
tabPanel(title = labelInput("mc"), value = "tabDtMC",
withLoader(plotOutput(ns('plot_dt_mc'), height = "45vh"),
type = "html", loader = "loader4"),
verbatimTextOutput(ns("txtDtMC"))),
tabPanel(title = labelInput("indices"),value = "tabDtIndex",
fluidRow(col_6(echarts4rOutput(ns("dtPrecGlob"), width = "100%")),
col_6(echarts4rOutput(ns("dtErrorGlob"), width = "100%"))),
fluidRow(col_12(shiny::tableOutput(ns("dtIndPrecTable")))),
fluidRow(col_12(shiny::tableOutput(ns("dtIndErrTable"))))),
tabPanel(title = labelInput("reglas"),value = "tabDtReglas",
withLoader(verbatimTextOutput(ns("rulesDt")),
type = "html", loader = "loader4")),
tabPanel(title = labelInput("probC"), value = "tabDtProbInd",
withLoader(verbatimTextOutput(ns("txtdtprobInd")),
type = "html", loader = "loader4")),
tabPanel(title = labelInput("probCstep"), value = "tabDtProb",
withLoader(verbatimTextOutput(ns("txtdtprob")),
type = "html", loader = "loader4"))
)
)
}
#' d_tree Server Function
#'
#' @noRd
mod_d_tree_server <- function(input, output, session, updateData, modelos, codedioma, modelos2){
ns <- session$ns
nombre.modelo <- rv(x = NULL)
observeEvent(updateData$datos, {
modelos2$dt = list(n = 0, mcs = vector(mode = "list", length = 10))
})
#Cuando se generan los datos de prueba y aprendizaje
observeEvent(c(updateData$datos.aprendizaje,updateData$datos.prueba), {
variable <- updateData$variable.predecir
datos <- updateData$datos
choices <- as.character(unique(datos[, variable]))
if(length(choices) == 2){
updateSelectInput(session, "cat_probC", choices = choices, selected = choices[1])
updateSelectInput(session, "cat.sel.prob", choices = choices, selected = choices[1])
}else{
updateSelectInput(session, "cat.sel.prob", choices = "")
updateSelectInput(session, "cat_probC", choices = "")
}
updateTabsetPanel(session, "BoxDt",selected = "tabDtModelo")
})
# Genera el texto del modelo, predicción y mc de DT
output$txtDt <- renderPrint({
input$runDt
tryCatch({
default.codigo.dt()
train <- updateData$datos.aprendizaje
test <- updateData$datos.prueba
var <- paste0(updateData$variable.predecir, "~.")
tipo <- isolate(input$split.dt)
minsplit<-isolate(input$minsplit.dt)
maxdepth<-isolate(input$maxdepth.dt)
nombre <- paste0("dtl-",tipo)
modelo <- traineR::train.rpart(as.formula(var), data = train,
control = rpart.control(minsplit = minsplit, maxdepth = maxdepth),parms = list(split = tipo))
prob <- predict(modelo , test, type = 'prob')
variable <- updateData$variable.predecir
choices <- levels(test[, variable])
if(length(choices) == 2){
category <- isolate(input$cat_probC)
corte <- isolate(input$val_probC)
Score <- prob$prediction[,category]
Clase <- test[,variable]
results <- prob.values.ind(Score, Clase, choices, category, corte, print = FALSE)
mc <- results$MC
pred <- results$Prediccion
}else{
pred <- predict(modelo , test, type = 'class')
mc <- confusion.matrix(test, pred)
pred <- pred$prediction
}
isolate({
modelos$dt[[nombre]] <- list(nombre = nombre, modelo = modelo ,pred = pred , prob = prob, mc = mc)
modelos2$dt$n <- modelos2$dt$n + 1
modelos2$dt$mcs[modelos2$dt$n] <- general.indexes(mc = mc)
if(modelos2$dt$n > 9)
modelos2$dt$n <- 0
})
nombre.modelo$x <- nombre
print(modelo)
},error = function(e){
return(invisible(""))
})
})
#Tabla de la predicción
output$dtPrediTable <- DT::renderDataTable({
test <- updateData$datos.prueba
var <- updateData$variable.predecir
idioma <- codedioma$idioma
obj.predic(modelos$dt[[nombre.modelo$x]]$pred,idioma = idioma, test, var)
},server = FALSE)
#Texto de la Matríz de Confusión
output$txtDtMC <- renderPrint({
print(modelos$dt[[nombre.modelo$x]]$mc)
})
#Gráfico de la Matríz de Confusión
output$plot_dt_mc <- renderPlot({
idioma <- codedioma$idioma
exe(plot_MC_code(idioma = idioma))
plot.MC(modelos$dt[[nombre.modelo$x]]$mc)
})
#Tabla de Indices por Categoría
output$dtIndPrecTable <- shiny::renderTable({
idioma <- codedioma$idioma
indices.dt <- indices.generales(modelos$dt[[nombre.modelo$x]]$mc)
xtable(indices.prec.table(indices.dt,"dt", idioma = idioma))
}, spacing = "xs",bordered = T, width = "100%", align = "c", digits = 2)
#Tabla de Errores por Categoría
output$dtIndErrTable <- shiny::renderTable({
idioma <- codedioma$idioma
indices.dt <- indices.generales(modelos$dt[[nombre.modelo$x]]$mc)
#Gráfico de Error y Precisión Global
output$dtPrecGlob <- renderEcharts4r(e_global_gauge(round(indices.dt[[1]],2), tr("precG",idioma), "#B5E391", "#90C468"))
output$dtErrorGlob <- renderEcharts4r(e_global_gauge(round(indices.dt[[2]],2), tr("errG",idioma), "#E39191", "#C46868"))
xtable(indices.error.table(indices.dt,"dt"))
}, spacing = "xs",bordered = T, width = "100%", align = "c", digits = 2)
#Plotear el árbol
output$plot_dt <- renderPlot({
tryCatch({
tipo <- isolate(input$split.dt)
datos <- updateData$datos
var <- updateData$variable.predecir
num <- length(levels(datos[,var]))
modelo <- modelos$dt[[nombre.modelo$x]]$modelo
# Cambia el código del gráfico del árbol
codigo <- paste0("### garbol\n", dt.plot(tipo))
isolate(codedioma$code <- append(codedioma$code, codigo))
prp(modelo, type = 2, extra = 104, nn = T, varlen = 0, faclen = 0,
fallen.leaves = TRUE, branch.lty = 6, shadow.col = 'gray82',
box.col = gg_color_hue(num)[modelo$frame$yval], roundint=FALSE)
},
error = function(e){
output$plot_dt <- renderPlot(NULL)
})
})
#Mostrar Reglas
output$rulesDt <- renderPrint({
tipo <- isolate(input$split.dt)
model <- modelos$dt[[nombre.modelo$x]]$modelo
var <- model$prmdt$var.pred
cod <- paste0("### reglas\n", paste0("rpart.rules(modelo.dt.",tipo,", cover = TRUE,nn = TRUE , style = 'tall', digits=3,
response.name ='",paste0("Rule Number - ", var),"')\n"))
isolate(codedioma$code <- append(codedioma$code, cod))
rpart.plot::rpart.rules(model, cover = TRUE,nn = TRUE ,roundint=FALSE, style = "tall", digits=3,
response.name = paste0("Rule Number - ", var))
})
# Genera la probabilidad de corte
output$txtdtprob <- renderPrint({
input$runProb
tryCatch({
test <- updateData$datos.prueba
variable <- updateData$variable.predecir
choices <- levels(test[, variable])
category <- isolate(input$cat.sel.prob)
paso <- isolate(input$by.prob)
prediccion <- modelos$dt[[nombre.modelo$x]]$prob
Score <- prediccion$prediction[,category]
Clase <- test[,variable]
prob.values(Score, Clase, choices, category, paso)
},error = function(e){
if(length(choices) != 2){
showNotification(paste0("ERROR Probabilidad de Corte: ", tr("errorprobC", codedioma$idioma)), type = "error")
}else{
showNotification(paste0("ERROR: ", e), type = "error")
}
return(invisible(""))
})
})
# Genera la probabilidad de corte
output$txtdtprobInd <- renderPrint({
input$runProbInd
tryCatch({
test <- updateData$datos.prueba
variable <- updateData$variable.predecir
choices <- levels(test[, variable])
category <- isolate(input$cat_probC)
corte <- isolate(input$val_probC)
prediccion <- modelos$dt[[nombre.modelo$x]]$prob
Score <- prediccion$prediction[,category]
Clase <- test[,variable]
if(!is.null(Score) & length(choices) == 2){
results <- prob.values.ind(Score, Clase, choices, category, corte)
modelos$dt[[nombre.modelo$x]]$mc <- results$MC
modelos$dt[[nombre.modelo$x]]$pred <- results$Prediccion
}
},error = function(e){
if(length(choices) != 2){
showNotification(paste0("ERROR Probabilidad de Corte: ", tr("errorprobC", codedioma$idioma)), type = "error")
}else{
showNotification(paste0("ERROR: ", e), type = "error")
}
return(invisible(""))
})
})
# Actualiza el código a la versión por defecto
default.codigo.dt <- function() {
tipo <- isolate(input$split.dt)
codigo <- dt.modelo(variable.pr = updateData$variable.predecir,
minsplit = isolate(input$minsplit.dt),
maxdepth = isolate(input$maxdepth.dt),
split = tipo)
cod <- paste0("### dtl\n",codigo)
# Se genera el código de la prediccion
codigo <- codigo.prediccion("dt", tipo)
cod <- paste0(cod,codigo)
# Se genera el código de la matriz
codigo <- codigo.MC("dt", tipo)
cod <- paste0(cod, codigo)
# Se genera el código de la indices
codigo <- extract.code("indices.generales")
codigo <- paste0(codigo,"\nindices.generales(MC.dt.",tipo,")\n")
cod <- paste0(cod,codigo)
isolate(codedioma$code <- append(codedioma$code, cod))
}
}
## To be copied in the UI
# mod_d_tree_ui("d_tree_ui_1")
## To be copied in the server
# callModule(mod_d_tree_server, "d_tree_ui_1")
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