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code/shiny-apps/panel_nasdaq100/server.R

+options(scipen=999)
+library(plotly)
+library(tidyquant)
+library(DT)
+library(formattable)
+library(tidyverse)
+
+
+server <- function(session, input, output) {
+
+
+observeEvent(input$uno,{
+  updateDateRangeInput(session, inputId = "date_range", start = Sys.Date() - 31)
+})
+observeEvent(input$dos,{
+  updateDateRangeInput(session, inputId = "date_range", start = Sys.Date() - 93)
+})
+observeEvent(input$tres,{
+  updateDateRangeInput(session, inputId = "date_range", start = Sys.Date() - 183)
+})
+observeEvent(input$cuatro,{
+  updateDateRangeInput(session, inputId = "date_range", start = Sys.Date() - 365)
+})
+observeEvent(input$cinco,{
+  updateDateRangeInput(session, inputId = "date_range", start = Sys.Date() - 3650)
+})
+
+
+data <- read.csv("../../RData/datos_nasdaq100.csv")
+v <- data$Valor
+simbolos <- data$Simbolo
+ayer <- read.csv("../../RData/datos_nasdaq100_ayer.csv")
+data <- data[,-2]
+ayer <- ayer[,-2]
+
+names(data) <- c("Valor", "Precio de cierre ajustado ($)")
+names(ayer) <- c("Valor", "Precio de cierre ajustado ($)")
+
+Cambio <- ((as.numeric(data$`Precio de cierre ajustado ($)`)-as.numeric(ayer$`Precio de cierre ajustado ($)`))/as.numeric(ayer$`Precio de cierre ajustado ($)`))*100
+signos <- function(elemento){
+  if(elemento > 0){
+    return(paste("+", elemento, sep = ""))
+  }else{
+    return(elemento)
+  }
+}
+colSigno <- function(elemento){
+  if(substr(elemento, start = 1, stop = 1) == "+"){
+    return(1)
+  }else{
+    return(0)
+  }
+}
+Cambio <- round(Cambio, digits = 2)
+Cambio <- unlist(lapply(Cambio, signos))
+colores <- unlist(lapply(Cambio, colSigno))
+data <- cbind(data, Cambio)
+
+data <- mutate(data, `Cambio` = paste(data$`Cambio`, "%"))
+
+
+    output$x1 <- DT::renderDataTable(datatable(data,
+                                        options = list(scrollX = TRUE, lengthChange = FALSE),
+                                        rownames = FALSE, 
+                                        selection = 'single')%>%
+                                     formatStyle(3, fontWeight = "bold", color = JS("value.includes('+') ? '#4AB58A' : value.includes('-') ? '#B51D1D' : 'gray'"))
+                                   )
+  pdf(NULL)
+  output$x2 = renderPlotly({
+    s = input$x1_rows_selected
+    par(mar = c(4, 4, 1, .1))
+    
+    fecha_ini <- input$date_range[1]
+    fecha_fin <- input$date_range[2]
+    
+    if (length(s)) {
+      
+      
+      aux <- getSymbols(simbolos[s], from = fecha_ini, to = fecha_fin-1, warnings = FALSE, auto.assign = FALSE)
+      aux <- na.omit(aux)
+      names(aux) <- c("open", "high", "low", "close", "volume", "adjusted")
+      stock <- data.frame(aux$adjusted)
+      stock <- data.frame(stock,rownames(stock))
+      colnames(stock) <- append('Precio','Fecha')
+      fig <- plot_ly(stock, type = 'scatter', mode = 'lines')%>%
+        add_trace(x = ~Fecha, y = ~Precio)%>%
+        layout(showlegend = F, title=v[s])
+
+      high_annotations <- list(
+        x=stock$Fecha[stock$Precio == max(stock$Precio)], 
+        y=max(stock$Precio),
+        xref='x', yref='y',
+        text=paste0('Máximo: ',max(stock$Precio)),
+        ax=0, ay=-40
+      )
+
+      low_annotations <- list(
+        x=stock$Fecha[stock$Precio == min(stock$Precio)], 
+        y=min(stock$Precio),
+        xref='x', yref='y',
+        text=paste0('Mínimo: ',min(stock$Precio)),
+        ax=0, ay=40
+      )
+
+
+      updatemenus <- list(
+        list(
+          active = -1,
+          type= 'buttons',
+          buttons = list(
+            list(
+              label = "Máximo",
+              method = "update",
+              args = list(list(visible = c(TRUE, TRUE)),
+                          list(title = v[s], annotations = list(c(), high_annotations)))),
+            list(
+              label = "Mínimo",
+              method = "update",
+              args = list(list(visible = c(TRUE, TRUE)),
+                          list(title = v[s], annotations = list(low_annotations, c() )))),
+            list(
+              label = "Ambos",
+              method = "update",
+              args = list(list(visible = c(TRUE, TRUE)),
+                          list(title = v[s], annotations = list(low_annotations, high_annotations)))),
+            list(
+              label = "Reset",
+              method = "update",
+              args = list(list(visible = c(TRUE, TRUE)),
+                          list(title = v[s], annotations = list(c(), c())))))
+        )
+      )
+
+      fig <- fig %>%
+        layout(
+          xaxis = list(zerolinecolor = '#ffff',
+                       zerolinewidth = 2,
+                       gridcolor = 'ffff'),
+          yaxis = list(zerolinecolor = '#ffff',
+                       zerolinewidth = 2,
+                       gridcolor = 'ffff'),
+          plot_bgcolor='#e5ecf6', margin = 0.1, updatemenus = updatemenus)   
+      
+    }
+
+
+  else{
+      aux <- getSymbols("^NDX", from = fecha_ini, to = fecha_fin-1, warnings = FALSE, auto.assign = FALSE)
+      aux <- na.omit(aux)
+      names(aux) <- c("open", "high", "low", "close", "volume", "adjusted")
+      stock <- data.frame(aux$adjusted) 
+      stock <- data.frame(stock,rownames(stock))
+      colnames(stock) <- append('Precio','Fecha')
+      fig <- plot_ly(stock, type = 'scatter', mode = 'lines')%>%
+        add_trace(x = ~Fecha, y = ~Precio)%>%
+        layout(showlegend = F, title = "NASDAQ 100")
+
+      high_annotations <- list(
+        x=stock$Fecha[stock$Precio == max(stock$Precio)], 
+        y=max(stock$Precio),
+        xref='x', yref='y',
+        text=paste0('Máximo: ',max(stock$Precio)),
+        ax=0, ay=-40
+      )
+
+      low_annotations <- list(
+        x=stock$Fecha[stock$Precio == min(stock$Precio)], 
+        y=min(stock$Precio),
+        xref='x', yref='y',
+        text=paste0('Mínimo: ',min(stock$Precio)),
+        ax=0, ay=40
+      )
+
+
+      updatemenus <- list(
+        list(
+          active = -1,
+          type= 'buttons',
+          buttons = list(
+            list(
+              label = "Máximo",
+              method = "update",
+              args = list(list(visible = c(TRUE, TRUE)),
+                          list(title = "NASDAQ 100", annotations = list(c(), high_annotations)))),
+            list(
+              label = "Mínimo",
+              method = "update",
+              args = list(list(visible = c(TRUE, TRUE)),
+                          list(title = "NASDAQ 100", annotations = list(low_annotations, c() )))),
+            list(
+              label = "Ambos",
+              method = "update",
+              args = list(list(visible = c(TRUE, TRUE)),
+                          list(title = "NASDAQ 100", annotations = list(low_annotations, high_annotations)))),
+            list(
+              label = "Reset",
+              method = "update",
+              args = list(list(visible = c(TRUE, TRUE)),
+                          list(title = "NASDAQ 100", annotations = list(c(), c())))))
+        )
+      )
+
+      fig <- fig %>%
+        layout(
+          xaxis = list(zerolinecolor = '#ffff',
+                       zerolinewidth = 2,
+                       gridcolor = 'ffff'),
+          yaxis = list(zerolinecolor = '#ffff',
+                       zerolinewidth = 2,
+                       gridcolor = 'ffff'),
+          plot_bgcolor='#e5ecf6', margin = 0.1, updatemenus = updatemenus)
+    }
+
+    fig
+
+  })
+
+}
+
+
+