清除/删除表格中的行R闪亮输出

Question

我是R语言的新手。在我的应用程序中，我正在使用“ tableOutput”生成一个表。每当用户再次单击“生成”按钮时，我都希望清除或删除表中的行。请帮我。这是我的代码

UI.R

mainPanel(
       tableOutput("Table_vf"),
       actionButton("GoButtonVendor", "Generate Result"),
)

Server.R

itemForecast_vf = observeEvent(input$GoButtonVendor, {
    //Some functionality
    values$forecastVendor <- data.frame (
              SNo = c(1:length(forecast_data_Date)),
              Date = c(forecast_data_Date),
              ItemCode = c(forecast_data_itemCodes),
              desc1 = c(forecast_data_itemDesc1),
              `Point Forecast` = c(forecast_data_pointForecast),
              Lo.80 = c(forecast_data_lo80),
              Hi.80 = c(forecast_data_hi80),
              Lo.95 = c(forecast_data_lo95),
              Hi.95 = c(forecast_data_hi95),
              Instock_Date = c(forecast_data_instock_date),
              Instock_Qty = c(forecast_data_instock_qty),
              stringsAsFactors = FALSE
            )
})