Error: unused arguments in Shiny (R)
19,178
Solution 1
That error usually means that you messed up your commas or brackets somewhere. In your case, there's one too many closing brackets ()
) at the end of the first fluidRow
that's closing the fluidPage
prematurely
Solution 2
In my case this was coming from the ambiguity when I loaded two packages using library(packageName) both having the same function name. So anyone who ended up here debugging can also consider that possibility in case whats written above is not the case.
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Author by
Danielle Smalls
Updated on October 20, 2022Comments
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Danielle Smalls over 1 year
I wanted to begin by modifying a few components of one of the basic shiny example apps, but I keep getting this error:
ERROR: unused arguments (fluidRow(column(4, tags$hr(), verbatimTextOutput("out1"), selectInput("in1", "Options", choices = state.name, multiple = TRUE, selectize = FALSE))), fluidRow(column(4, tags$hr(), verbatimTextOutput("out2"), selectInput("in2", "Options", choices = state.name, multiple = TRUE, selectize = FALSE))))
Here is my code:
ui.R
library(shiny) library(shinythemes) shinyUI(fluidPage(theme=shinytheme("flatly"), #Application Title headerPanel("States"), br(), fluidRow( column(4, tags$h4("Choose One or Multiple States")) )), fluidRow( column(4, tags$hr(), verbatimTextOutput('out1'), selectInput('in1', 'Options', choices = state.name, multiple = TRUE, selectize = FALSE) ) ), fluidRow( column(4, tags$hr(), verbatimTextOutput('out2'), selectInput('in2', 'Options', choices= state.name, multiple = TRUE, selectize = FALSE)) ))
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server.R
sessionInfo() install.packages("shiny") library(shiny) View(headcount) attach(headcount) headcount.crn=as.array(CRN) shinyServer(function (input, output, session) { output$out1 <- renderPrint(input$in1) output$out2 <- renderPrint(input$in2) })
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Danielle Smalls almost 9 yearsDidn't catch that at all-- it works fine now! Thank you!
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warship over 7 yearsIndeed, "messed up your commas or brackets somewhere" sums it up nicely!