How to delete header row in R shiny dataframe being output using renderTable?

Question

How to delete the header row in the table? I'm using renderTable to output the table and setting the colnames to empty strings. colnames(df) <- c("", "")

Answer 1

colnames(df) <- c("","") does not do what you want here. You want colnames = FALSE in your renderTable() call.

Here is a simple example. Note that the result is the same with or without the colnames<- line. I can reproduce your image with colnames = TRUE

library(shiny)
ui <- fluidPage(
    flowLayout(
        mainPanel(
           tableOutput("testTable")
        )
    )
)
server <- function(input, output) {
    dat <- data.frame(a = c(1,2,3),b = c(4,5,6),c = c(7,8,9))
    colnames(dat) <- c("","","")
    output$testTable <- renderTable(dat, colnames = FALSE, bordered = TRUE)
}
shinyApp(ui = ui, server = server)