Created
December 9, 2018 02:23
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| library(shiny) | |
| library(quantmod) | |
| get_symbols <- function(symbol){ | |
| symbol_data <- getSymbols(symbol, | |
| src = "yahoo", | |
| auto.assign = FALSE) | |
| names(symbol_data) <- c("Open", "High", "Low", "Close", "Volume", "Adjusted.Close") | |
| symbol_data | |
| } | |
| plot_open_vs_close <- function(symbol_df, symbol){ | |
| ggplot(symbol_df) + | |
| geom_point(aes(x=Close, y=Open)) + | |
| theme_classic() + | |
| ggtitle(symbol) | |
| } | |
| #ui | |
| ui <- fluidPage( | |
| titlePanel("Alfreds VIX App"), | |
| sidebarLayout( | |
| sidebarPanel( | |
| textInput("symbol", "Symbol:", "VIX"), | |
| actionButton("search_button", "Go!") | |
| ), | |
| mainPanel( | |
| plotOutput("open_vs_close_plot"), | |
| tableOutput("summary") | |
| ) | |
| ) | |
| ) | |
| #server | |
| server <- function(input, output){ | |
| symbol_data <- eventReactive(input$search_button, { | |
| get_symbols(input$symbol) | |
| }) | |
| output$open_vs_close_plot <- renderPlot( | |
| plot_open_vs_close(symbol_data(), "symbol") | |
| ) | |
| output$summary <- renderTable(head(symbol_data())) | |
| } | |
| shiny::shinyApp(ui = ui, server = server) |
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