How to extract info from imported data in shiny and use it as textInput?











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I want to create an app with R shiny where I load data, display it and then I can make some operations on the data in another tibble/data frame and have the original data displayed in a tab. Additionally I would like to use the data in tibble cells to be used as the value for textInput. Thus far I have come up with this for the UI:



ui <- 
dashboardPage(
dashboardHeader(title="NGS library quantification app", titleWidth=500),
dashboardSidebar(
menuItem(text = "Raw Data", tabName = "r_data", icon=icon("clipboard")),
menuItem(text = "User Data", tabName = "u_data", icon=icon("clipboard")),
menuItem(text = "Analysis", tabName = "analysis", icon=icon("cog", lib = "glyphicon")),
menuItem(text = "Summary", tabName = "summary", icon=icon("book")),
collapsed=TRUE),
dashboardBody(
tags$head(
tags$style(HTML(".main-sidebar { font-size: 30px; }")) #change the font size to 30
),
tags$script(
HTML(
"
$(document).ready(function(){
// Bind classes to menu items, easiet to fill in manually
var ids = ['r_data','u_data','analysis', 'summary'];
for(i=0; i<ids.length; i++){
$('a[data-value='+ids[i]+']').addClass('my_subitem_class');
}

// Register click handeler
$('.my_subitem_class').on('click',function(){
// Unactive menuSubItems
$('.my_subitem_class').parent().removeClass('active');
})
})
"
)
),


tabItems(
#Raw data tab
tabItem(tabName = "r_data", fileInput(inputId = "file", label = "Choose file"), tableOutput("info"), tableOutput("raw_data")),

#user data tab
tabItem(tabName = "u_data",
column(textInput("ID1", "Sample ID", value = ""),
textInput("ID2", "", value = ""),
textInput("ID3", "", value = ""),
textInput("ID4", "", value = ""),
textInput("ID5", "", value = ""),
textInput("ID6", "", value = ""),
textInput("ID7", "", value = ""),
textInput("ID8", "", value = ""),
width=1),
column(numericInput("size1", "library size (bp)", value = NULL, step=1),
numericInput("size2", "", value = NULL, step=1),
numericInput("size3", "", value = NULL, step=1),
numericInput("size4", "", value = NULL, step=1),
numericInput("size5", "", value = NULL, step=1),
numericInput("size6", "", value = NULL, step=1),
numericInput("size7", "", value = NULL, step=1),
numericInput("size8", "", value = NULL, step=1),
width = 2),
column(numericInput("dil1", "First dilution", value = 100000, step=10000),
numericInput("dil2", "", value = 100000, step=10000),
numericInput("dil3", "", value = 100000, step=10000),
numericInput("dil4", "", value = 100000, step=10000),
numericInput("dil5", "", value = 100000, step=10000),
numericInput("dil6", "", value = 100000, step=10000),
numericInput("dil7", "", value = 100000, step=10000),
numericInput("dil8", "", value = 100000, step=10000),
width = 2),
column(numericInput("dil9", "Second dilution", value = 250000, step=10000),
numericInput("dil10", "", value = 250000, step=10000),
numericInput("dil11", "", value = 250000, step=10000),
numericInput("dil12", "", value = 250000, step=10000),
numericInput("dil13", "", value = 250000, step=10000),
numericInput("dil14", "", value = 250000, step=10000),
numericInput("dil15", "", value = 250000, step=10000),
numericInput("dil6", "", value = 250000, step=10000),
width = 2),
column(numericInput("dil17", "Third dilution", value = 500000, step=10000),
numericInput("dil18", "", value = 500000, step=10000),
numericInput("dil19", "", value = 500000, step=10000),
numericInput("dil20", "", value = 500000, step=10000),
numericInput("dil21", "", value = 500000, step=10000),
numericInput("dil22", "", value = 500000, step=10000),
numericInput("dil23", "", value = 500000, step=10000),
numericInput("dil24", "", value = 500000, step=10000),
width = 2),
column(textInput("check1", "Sample Detected?", "YES"),
textInput("check2", "", "YES"),
textInput("check3", "", "YES"),
textInput("check4", "", "YES"),
textInput("check5", "", "YES"),
textInput("check6", "", "YES"),
textInput("check7", "", "YES"),
textInput("check8", "", "YES"),
width = 2)
)


and then for the server:



server <- function(input, output, session){

# Reading data from CFX exported file
data <- reactive({
inFile <- input$file
if(is.null(inFile))
return(NULL)

data <- read_excel(paste(inFile$datapath), sheet=1, skip=18, col_types = c("text", "text", "text",
"text", "numeric", "numeric", "numeric",
"numeric", "numeric"))
})
ID1 <- reactive({data()[12, 2]})
updateTextInput(session, "ID1", value = reactive({ID1()}))
}


Those are just snippets that I hope will be helpful with evaluating this problem. The problem is that when I then go back to the user data and look at the sample ID rather than seeing the ID of the sample I see what appears to be the code of the ID1 variable? I have no idea what I am doing wrong. I am new to Shiny and can't really troubleshoot this. you can find the app here



And this is the output in the textInput("ID1", "Sample ID", value = ""):



structure(function () ,{,    .dependents$register(),    if (.invalidated || .running) {,        ..stacktraceoff..(self$.updateValue()),    },    .graphDependsOnId(getCurrentContext()$id, .mostRecentCtxId),    if (.error) {,        stop(.value),    },    if (.visible) ,        .value,    else invisible(.value),}, observable = <environment>)


but I was expecting the value in the cell. Any help will be greatly appreciated. Thank you everyone










share|improve this question




























    up vote
    0
    down vote

    favorite












    I want to create an app with R shiny where I load data, display it and then I can make some operations on the data in another tibble/data frame and have the original data displayed in a tab. Additionally I would like to use the data in tibble cells to be used as the value for textInput. Thus far I have come up with this for the UI:



    ui <- 
    dashboardPage(
    dashboardHeader(title="NGS library quantification app", titleWidth=500),
    dashboardSidebar(
    menuItem(text = "Raw Data", tabName = "r_data", icon=icon("clipboard")),
    menuItem(text = "User Data", tabName = "u_data", icon=icon("clipboard")),
    menuItem(text = "Analysis", tabName = "analysis", icon=icon("cog", lib = "glyphicon")),
    menuItem(text = "Summary", tabName = "summary", icon=icon("book")),
    collapsed=TRUE),
    dashboardBody(
    tags$head(
    tags$style(HTML(".main-sidebar { font-size: 30px; }")) #change the font size to 30
    ),
    tags$script(
    HTML(
    "
    $(document).ready(function(){
    // Bind classes to menu items, easiet to fill in manually
    var ids = ['r_data','u_data','analysis', 'summary'];
    for(i=0; i<ids.length; i++){
    $('a[data-value='+ids[i]+']').addClass('my_subitem_class');
    }

    // Register click handeler
    $('.my_subitem_class').on('click',function(){
    // Unactive menuSubItems
    $('.my_subitem_class').parent().removeClass('active');
    })
    })
    "
    )
    ),


    tabItems(
    #Raw data tab
    tabItem(tabName = "r_data", fileInput(inputId = "file", label = "Choose file"), tableOutput("info"), tableOutput("raw_data")),

    #user data tab
    tabItem(tabName = "u_data",
    column(textInput("ID1", "Sample ID", value = ""),
    textInput("ID2", "", value = ""),
    textInput("ID3", "", value = ""),
    textInput("ID4", "", value = ""),
    textInput("ID5", "", value = ""),
    textInput("ID6", "", value = ""),
    textInput("ID7", "", value = ""),
    textInput("ID8", "", value = ""),
    width=1),
    column(numericInput("size1", "library size (bp)", value = NULL, step=1),
    numericInput("size2", "", value = NULL, step=1),
    numericInput("size3", "", value = NULL, step=1),
    numericInput("size4", "", value = NULL, step=1),
    numericInput("size5", "", value = NULL, step=1),
    numericInput("size6", "", value = NULL, step=1),
    numericInput("size7", "", value = NULL, step=1),
    numericInput("size8", "", value = NULL, step=1),
    width = 2),
    column(numericInput("dil1", "First dilution", value = 100000, step=10000),
    numericInput("dil2", "", value = 100000, step=10000),
    numericInput("dil3", "", value = 100000, step=10000),
    numericInput("dil4", "", value = 100000, step=10000),
    numericInput("dil5", "", value = 100000, step=10000),
    numericInput("dil6", "", value = 100000, step=10000),
    numericInput("dil7", "", value = 100000, step=10000),
    numericInput("dil8", "", value = 100000, step=10000),
    width = 2),
    column(numericInput("dil9", "Second dilution", value = 250000, step=10000),
    numericInput("dil10", "", value = 250000, step=10000),
    numericInput("dil11", "", value = 250000, step=10000),
    numericInput("dil12", "", value = 250000, step=10000),
    numericInput("dil13", "", value = 250000, step=10000),
    numericInput("dil14", "", value = 250000, step=10000),
    numericInput("dil15", "", value = 250000, step=10000),
    numericInput("dil6", "", value = 250000, step=10000),
    width = 2),
    column(numericInput("dil17", "Third dilution", value = 500000, step=10000),
    numericInput("dil18", "", value = 500000, step=10000),
    numericInput("dil19", "", value = 500000, step=10000),
    numericInput("dil20", "", value = 500000, step=10000),
    numericInput("dil21", "", value = 500000, step=10000),
    numericInput("dil22", "", value = 500000, step=10000),
    numericInput("dil23", "", value = 500000, step=10000),
    numericInput("dil24", "", value = 500000, step=10000),
    width = 2),
    column(textInput("check1", "Sample Detected?", "YES"),
    textInput("check2", "", "YES"),
    textInput("check3", "", "YES"),
    textInput("check4", "", "YES"),
    textInput("check5", "", "YES"),
    textInput("check6", "", "YES"),
    textInput("check7", "", "YES"),
    textInput("check8", "", "YES"),
    width = 2)
    )


    and then for the server:



    server <- function(input, output, session){

    # Reading data from CFX exported file
    data <- reactive({
    inFile <- input$file
    if(is.null(inFile))
    return(NULL)

    data <- read_excel(paste(inFile$datapath), sheet=1, skip=18, col_types = c("text", "text", "text",
    "text", "numeric", "numeric", "numeric",
    "numeric", "numeric"))
    })
    ID1 <- reactive({data()[12, 2]})
    updateTextInput(session, "ID1", value = reactive({ID1()}))
    }


    Those are just snippets that I hope will be helpful with evaluating this problem. The problem is that when I then go back to the user data and look at the sample ID rather than seeing the ID of the sample I see what appears to be the code of the ID1 variable? I have no idea what I am doing wrong. I am new to Shiny and can't really troubleshoot this. you can find the app here



    And this is the output in the textInput("ID1", "Sample ID", value = ""):



    structure(function () ,{,    .dependents$register(),    if (.invalidated || .running) {,        ..stacktraceoff..(self$.updateValue()),    },    .graphDependsOnId(getCurrentContext()$id, .mostRecentCtxId),    if (.error) {,        stop(.value),    },    if (.visible) ,        .value,    else invisible(.value),}, observable = <environment>)


    but I was expecting the value in the cell. Any help will be greatly appreciated. Thank you everyone










    share|improve this question


























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I want to create an app with R shiny where I load data, display it and then I can make some operations on the data in another tibble/data frame and have the original data displayed in a tab. Additionally I would like to use the data in tibble cells to be used as the value for textInput. Thus far I have come up with this for the UI:



      ui <- 
      dashboardPage(
      dashboardHeader(title="NGS library quantification app", titleWidth=500),
      dashboardSidebar(
      menuItem(text = "Raw Data", tabName = "r_data", icon=icon("clipboard")),
      menuItem(text = "User Data", tabName = "u_data", icon=icon("clipboard")),
      menuItem(text = "Analysis", tabName = "analysis", icon=icon("cog", lib = "glyphicon")),
      menuItem(text = "Summary", tabName = "summary", icon=icon("book")),
      collapsed=TRUE),
      dashboardBody(
      tags$head(
      tags$style(HTML(".main-sidebar { font-size: 30px; }")) #change the font size to 30
      ),
      tags$script(
      HTML(
      "
      $(document).ready(function(){
      // Bind classes to menu items, easiet to fill in manually
      var ids = ['r_data','u_data','analysis', 'summary'];
      for(i=0; i<ids.length; i++){
      $('a[data-value='+ids[i]+']').addClass('my_subitem_class');
      }

      // Register click handeler
      $('.my_subitem_class').on('click',function(){
      // Unactive menuSubItems
      $('.my_subitem_class').parent().removeClass('active');
      })
      })
      "
      )
      ),


      tabItems(
      #Raw data tab
      tabItem(tabName = "r_data", fileInput(inputId = "file", label = "Choose file"), tableOutput("info"), tableOutput("raw_data")),

      #user data tab
      tabItem(tabName = "u_data",
      column(textInput("ID1", "Sample ID", value = ""),
      textInput("ID2", "", value = ""),
      textInput("ID3", "", value = ""),
      textInput("ID4", "", value = ""),
      textInput("ID5", "", value = ""),
      textInput("ID6", "", value = ""),
      textInput("ID7", "", value = ""),
      textInput("ID8", "", value = ""),
      width=1),
      column(numericInput("size1", "library size (bp)", value = NULL, step=1),
      numericInput("size2", "", value = NULL, step=1),
      numericInput("size3", "", value = NULL, step=1),
      numericInput("size4", "", value = NULL, step=1),
      numericInput("size5", "", value = NULL, step=1),
      numericInput("size6", "", value = NULL, step=1),
      numericInput("size7", "", value = NULL, step=1),
      numericInput("size8", "", value = NULL, step=1),
      width = 2),
      column(numericInput("dil1", "First dilution", value = 100000, step=10000),
      numericInput("dil2", "", value = 100000, step=10000),
      numericInput("dil3", "", value = 100000, step=10000),
      numericInput("dil4", "", value = 100000, step=10000),
      numericInput("dil5", "", value = 100000, step=10000),
      numericInput("dil6", "", value = 100000, step=10000),
      numericInput("dil7", "", value = 100000, step=10000),
      numericInput("dil8", "", value = 100000, step=10000),
      width = 2),
      column(numericInput("dil9", "Second dilution", value = 250000, step=10000),
      numericInput("dil10", "", value = 250000, step=10000),
      numericInput("dil11", "", value = 250000, step=10000),
      numericInput("dil12", "", value = 250000, step=10000),
      numericInput("dil13", "", value = 250000, step=10000),
      numericInput("dil14", "", value = 250000, step=10000),
      numericInput("dil15", "", value = 250000, step=10000),
      numericInput("dil6", "", value = 250000, step=10000),
      width = 2),
      column(numericInput("dil17", "Third dilution", value = 500000, step=10000),
      numericInput("dil18", "", value = 500000, step=10000),
      numericInput("dil19", "", value = 500000, step=10000),
      numericInput("dil20", "", value = 500000, step=10000),
      numericInput("dil21", "", value = 500000, step=10000),
      numericInput("dil22", "", value = 500000, step=10000),
      numericInput("dil23", "", value = 500000, step=10000),
      numericInput("dil24", "", value = 500000, step=10000),
      width = 2),
      column(textInput("check1", "Sample Detected?", "YES"),
      textInput("check2", "", "YES"),
      textInput("check3", "", "YES"),
      textInput("check4", "", "YES"),
      textInput("check5", "", "YES"),
      textInput("check6", "", "YES"),
      textInput("check7", "", "YES"),
      textInput("check8", "", "YES"),
      width = 2)
      )


      and then for the server:



      server <- function(input, output, session){

      # Reading data from CFX exported file
      data <- reactive({
      inFile <- input$file
      if(is.null(inFile))
      return(NULL)

      data <- read_excel(paste(inFile$datapath), sheet=1, skip=18, col_types = c("text", "text", "text",
      "text", "numeric", "numeric", "numeric",
      "numeric", "numeric"))
      })
      ID1 <- reactive({data()[12, 2]})
      updateTextInput(session, "ID1", value = reactive({ID1()}))
      }


      Those are just snippets that I hope will be helpful with evaluating this problem. The problem is that when I then go back to the user data and look at the sample ID rather than seeing the ID of the sample I see what appears to be the code of the ID1 variable? I have no idea what I am doing wrong. I am new to Shiny and can't really troubleshoot this. you can find the app here



      And this is the output in the textInput("ID1", "Sample ID", value = ""):



      structure(function () ,{,    .dependents$register(),    if (.invalidated || .running) {,        ..stacktraceoff..(self$.updateValue()),    },    .graphDependsOnId(getCurrentContext()$id, .mostRecentCtxId),    if (.error) {,        stop(.value),    },    if (.visible) ,        .value,    else invisible(.value),}, observable = <environment>)


      but I was expecting the value in the cell. Any help will be greatly appreciated. Thank you everyone










      share|improve this question















      I want to create an app with R shiny where I load data, display it and then I can make some operations on the data in another tibble/data frame and have the original data displayed in a tab. Additionally I would like to use the data in tibble cells to be used as the value for textInput. Thus far I have come up with this for the UI:



      ui <- 
      dashboardPage(
      dashboardHeader(title="NGS library quantification app", titleWidth=500),
      dashboardSidebar(
      menuItem(text = "Raw Data", tabName = "r_data", icon=icon("clipboard")),
      menuItem(text = "User Data", tabName = "u_data", icon=icon("clipboard")),
      menuItem(text = "Analysis", tabName = "analysis", icon=icon("cog", lib = "glyphicon")),
      menuItem(text = "Summary", tabName = "summary", icon=icon("book")),
      collapsed=TRUE),
      dashboardBody(
      tags$head(
      tags$style(HTML(".main-sidebar { font-size: 30px; }")) #change the font size to 30
      ),
      tags$script(
      HTML(
      "
      $(document).ready(function(){
      // Bind classes to menu items, easiet to fill in manually
      var ids = ['r_data','u_data','analysis', 'summary'];
      for(i=0; i<ids.length; i++){
      $('a[data-value='+ids[i]+']').addClass('my_subitem_class');
      }

      // Register click handeler
      $('.my_subitem_class').on('click',function(){
      // Unactive menuSubItems
      $('.my_subitem_class').parent().removeClass('active');
      })
      })
      "
      )
      ),


      tabItems(
      #Raw data tab
      tabItem(tabName = "r_data", fileInput(inputId = "file", label = "Choose file"), tableOutput("info"), tableOutput("raw_data")),

      #user data tab
      tabItem(tabName = "u_data",
      column(textInput("ID1", "Sample ID", value = ""),
      textInput("ID2", "", value = ""),
      textInput("ID3", "", value = ""),
      textInput("ID4", "", value = ""),
      textInput("ID5", "", value = ""),
      textInput("ID6", "", value = ""),
      textInput("ID7", "", value = ""),
      textInput("ID8", "", value = ""),
      width=1),
      column(numericInput("size1", "library size (bp)", value = NULL, step=1),
      numericInput("size2", "", value = NULL, step=1),
      numericInput("size3", "", value = NULL, step=1),
      numericInput("size4", "", value = NULL, step=1),
      numericInput("size5", "", value = NULL, step=1),
      numericInput("size6", "", value = NULL, step=1),
      numericInput("size7", "", value = NULL, step=1),
      numericInput("size8", "", value = NULL, step=1),
      width = 2),
      column(numericInput("dil1", "First dilution", value = 100000, step=10000),
      numericInput("dil2", "", value = 100000, step=10000),
      numericInput("dil3", "", value = 100000, step=10000),
      numericInput("dil4", "", value = 100000, step=10000),
      numericInput("dil5", "", value = 100000, step=10000),
      numericInput("dil6", "", value = 100000, step=10000),
      numericInput("dil7", "", value = 100000, step=10000),
      numericInput("dil8", "", value = 100000, step=10000),
      width = 2),
      column(numericInput("dil9", "Second dilution", value = 250000, step=10000),
      numericInput("dil10", "", value = 250000, step=10000),
      numericInput("dil11", "", value = 250000, step=10000),
      numericInput("dil12", "", value = 250000, step=10000),
      numericInput("dil13", "", value = 250000, step=10000),
      numericInput("dil14", "", value = 250000, step=10000),
      numericInput("dil15", "", value = 250000, step=10000),
      numericInput("dil6", "", value = 250000, step=10000),
      width = 2),
      column(numericInput("dil17", "Third dilution", value = 500000, step=10000),
      numericInput("dil18", "", value = 500000, step=10000),
      numericInput("dil19", "", value = 500000, step=10000),
      numericInput("dil20", "", value = 500000, step=10000),
      numericInput("dil21", "", value = 500000, step=10000),
      numericInput("dil22", "", value = 500000, step=10000),
      numericInput("dil23", "", value = 500000, step=10000),
      numericInput("dil24", "", value = 500000, step=10000),
      width = 2),
      column(textInput("check1", "Sample Detected?", "YES"),
      textInput("check2", "", "YES"),
      textInput("check3", "", "YES"),
      textInput("check4", "", "YES"),
      textInput("check5", "", "YES"),
      textInput("check6", "", "YES"),
      textInput("check7", "", "YES"),
      textInput("check8", "", "YES"),
      width = 2)
      )


      and then for the server:



      server <- function(input, output, session){

      # Reading data from CFX exported file
      data <- reactive({
      inFile <- input$file
      if(is.null(inFile))
      return(NULL)

      data <- read_excel(paste(inFile$datapath), sheet=1, skip=18, col_types = c("text", "text", "text",
      "text", "numeric", "numeric", "numeric",
      "numeric", "numeric"))
      })
      ID1 <- reactive({data()[12, 2]})
      updateTextInput(session, "ID1", value = reactive({ID1()}))
      }


      Those are just snippets that I hope will be helpful with evaluating this problem. The problem is that when I then go back to the user data and look at the sample ID rather than seeing the ID of the sample I see what appears to be the code of the ID1 variable? I have no idea what I am doing wrong. I am new to Shiny and can't really troubleshoot this. you can find the app here



      And this is the output in the textInput("ID1", "Sample ID", value = ""):



      structure(function () ,{,    .dependents$register(),    if (.invalidated || .running) {,        ..stacktraceoff..(self$.updateValue()),    },    .graphDependsOnId(getCurrentContext()$id, .mostRecentCtxId),    if (.error) {,        stop(.value),    },    if (.visible) ,        .value,    else invisible(.value),}, observable = <environment>)


      but I was expecting the value in the cell. Any help will be greatly appreciated. Thank you everyone







      r shiny






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 11 at 0:10









      Antonino

      1,23211224




      1,23211224










      asked Nov 10 at 22:57









      Dawid Walas

      32




      32
























          1 Answer
          1






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          oldest

          votes

















          up vote
          0
          down vote



          accepted










          There are a few changes you need to make:




          1. Put your updateTextInput inside an observer. This is because you need to read from a reactive expression, and observe does that.

          2. You need to parse ID1() using as.character before being able to display it in your app.


          Change your server to the following:



          server <- function(input, output, session){

          # Reading data from CFX exported file
          data <- reactive({
          inFile <- input$file
          if(is.null(inFile))
          return(NULL)

          data <- readxl::read_excel(paste(inFile$datapath), sheet=1, skip=18,
          col_types = c("text", "text", "text","text", "numeric",
          "numeric", "numeric","numeric", "numeric"))
          })

          ID1 <- reactive({data()[12, 2]})

          observe({
          updateTextInput(session, "ID1", value = as.character(ID1()))
          })

          }





          share|improve this answer





















          • Hi Vishesh Shrivastav, Thank you very much. That solved the problem. Best wishes Dawid
            – Dawid Walas
            Nov 11 at 9:00












          • Glad that it helped. Please mark the answer as correct.
            – Vishesh Shrivastav
            Nov 11 at 16:15











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          up vote
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          down vote



          accepted










          There are a few changes you need to make:




          1. Put your updateTextInput inside an observer. This is because you need to read from a reactive expression, and observe does that.

          2. You need to parse ID1() using as.character before being able to display it in your app.


          Change your server to the following:



          server <- function(input, output, session){

          # Reading data from CFX exported file
          data <- reactive({
          inFile <- input$file
          if(is.null(inFile))
          return(NULL)

          data <- readxl::read_excel(paste(inFile$datapath), sheet=1, skip=18,
          col_types = c("text", "text", "text","text", "numeric",
          "numeric", "numeric","numeric", "numeric"))
          })

          ID1 <- reactive({data()[12, 2]})

          observe({
          updateTextInput(session, "ID1", value = as.character(ID1()))
          })

          }





          share|improve this answer





















          • Hi Vishesh Shrivastav, Thank you very much. That solved the problem. Best wishes Dawid
            – Dawid Walas
            Nov 11 at 9:00












          • Glad that it helped. Please mark the answer as correct.
            – Vishesh Shrivastav
            Nov 11 at 16:15















          up vote
          0
          down vote



          accepted










          There are a few changes you need to make:




          1. Put your updateTextInput inside an observer. This is because you need to read from a reactive expression, and observe does that.

          2. You need to parse ID1() using as.character before being able to display it in your app.


          Change your server to the following:



          server <- function(input, output, session){

          # Reading data from CFX exported file
          data <- reactive({
          inFile <- input$file
          if(is.null(inFile))
          return(NULL)

          data <- readxl::read_excel(paste(inFile$datapath), sheet=1, skip=18,
          col_types = c("text", "text", "text","text", "numeric",
          "numeric", "numeric","numeric", "numeric"))
          })

          ID1 <- reactive({data()[12, 2]})

          observe({
          updateTextInput(session, "ID1", value = as.character(ID1()))
          })

          }





          share|improve this answer





















          • Hi Vishesh Shrivastav, Thank you very much. That solved the problem. Best wishes Dawid
            – Dawid Walas
            Nov 11 at 9:00












          • Glad that it helped. Please mark the answer as correct.
            – Vishesh Shrivastav
            Nov 11 at 16:15













          up vote
          0
          down vote



          accepted







          up vote
          0
          down vote



          accepted






          There are a few changes you need to make:




          1. Put your updateTextInput inside an observer. This is because you need to read from a reactive expression, and observe does that.

          2. You need to parse ID1() using as.character before being able to display it in your app.


          Change your server to the following:



          server <- function(input, output, session){

          # Reading data from CFX exported file
          data <- reactive({
          inFile <- input$file
          if(is.null(inFile))
          return(NULL)

          data <- readxl::read_excel(paste(inFile$datapath), sheet=1, skip=18,
          col_types = c("text", "text", "text","text", "numeric",
          "numeric", "numeric","numeric", "numeric"))
          })

          ID1 <- reactive({data()[12, 2]})

          observe({
          updateTextInput(session, "ID1", value = as.character(ID1()))
          })

          }





          share|improve this answer












          There are a few changes you need to make:




          1. Put your updateTextInput inside an observer. This is because you need to read from a reactive expression, and observe does that.

          2. You need to parse ID1() using as.character before being able to display it in your app.


          Change your server to the following:



          server <- function(input, output, session){

          # Reading data from CFX exported file
          data <- reactive({
          inFile <- input$file
          if(is.null(inFile))
          return(NULL)

          data <- readxl::read_excel(paste(inFile$datapath), sheet=1, skip=18,
          col_types = c("text", "text", "text","text", "numeric",
          "numeric", "numeric","numeric", "numeric"))
          })

          ID1 <- reactive({data()[12, 2]})

          observe({
          updateTextInput(session, "ID1", value = as.character(ID1()))
          })

          }






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 11 at 1:04









          Vishesh Shrivastav

          1,0062621




          1,0062621












          • Hi Vishesh Shrivastav, Thank you very much. That solved the problem. Best wishes Dawid
            – Dawid Walas
            Nov 11 at 9:00












          • Glad that it helped. Please mark the answer as correct.
            – Vishesh Shrivastav
            Nov 11 at 16:15


















          • Hi Vishesh Shrivastav, Thank you very much. That solved the problem. Best wishes Dawid
            – Dawid Walas
            Nov 11 at 9:00












          • Glad that it helped. Please mark the answer as correct.
            – Vishesh Shrivastav
            Nov 11 at 16:15
















          Hi Vishesh Shrivastav, Thank you very much. That solved the problem. Best wishes Dawid
          – Dawid Walas
          Nov 11 at 9:00






          Hi Vishesh Shrivastav, Thank you very much. That solved the problem. Best wishes Dawid
          – Dawid Walas
          Nov 11 at 9:00














          Glad that it helped. Please mark the answer as correct.
          – Vishesh Shrivastav
          Nov 11 at 16:15




          Glad that it helped. Please mark the answer as correct.
          – Vishesh Shrivastav
          Nov 11 at 16:15


















           

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