Stockdata = na.fill(.stockdata, fill = "extend") stockdata = getSymbols(input$stock_id, warnings = FALSE, auto.assign = FALSE) In our case the reactive expression is the following function: When this happens the expression is recalculated, i.e. The reactive expression is “informed” if and when any input has changed. The input “stock_id” from the selectInput box in the ui.R (=input$stock_id) is fed into what’s called a reactive expression.GDAXI = getSymbols('^GDAXI', warnings = FALSE, auto.assign = FALSE) We download the data for the DAX index, using the getSymbols function from the quantmod package.The definitions in the ui.R use a hierarchy of panels, in this case the hierarchy is mainPanel,tabsetPanel and tabPanel : ![]() However the way these plots are presented is defined in the ui.R.
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