shinymeta works locally but breaks when published to shinyapps.io

» r » shinymeta works locally but breaks when published to shinyapps.io

By : user3099709

Date : January 11 2021, 03:34 PM

fixed the issue. Will look into that further Examining the logs on shinapps.io, the problem appeared to be with the clipr package. This is a dependency of shinymeta but for some reason didn't seem to be called automatically the way other dependencies are. Adding the following code to the app.R file fixed the problem:

code :

library(clipr)

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shiny app works locally, but not on shinyapps.io

By : Dom

Date : March 29 2020, 07:55 AM

Hope that helps I solved this problem by using dbConnect & DBI libraries instead of RODBC and using RSQLServer::SQLServer() to open the connection on the sql server. and i thanks @PorkChop for give me a help in that.

R Shiny - uploading multiple csv works locally but not on shinyapps.io

By : Arun Popli

Date : March 29 2020, 07:55 AM

Any of those help You should not use csv_names <- input$file1[['name']] in your server, this only return the file name, not file path, so when you use read.csv to read the csv file, the error occured.
The following should work fine.

code :

library(shiny)
library(shinydashboard)


dashboardPage( skin = "black",
               dashboardHeader(title = "myApp"),
               dashboardSidebar(collapsed = TRUE,
                                sidebarMenu(
                                  menuItem("Home", tabName = "dashboard1", icon = icon("home", lib = 
                                                                                         "glyphicon"))
                                ) 
               ),
               dashboardBody(
                 tags$head(tags$style(HTML('
      .main-header .logo {
                          font-family: "Times New Roman", serif;
                          font-weight: bold;
                          font-size: 24px;
                          }
                          '))),

                 tabItems(
                   tabItem(tabName = "dashboard1",
                           fileInput("file1",
                                     label="Input files:",
                                     multiple = TRUE),
                           downloadButton('plot.pdf', 'Download Data')
                   )
                 )

               )
)

library(shiny)
library(shinydashboard)

#server start
function(input, output) {

  testinput<- reactive({
    if(is.null(input$file1))
      return ()
    else 
    {
      nfiles = nrow(input$file1) 
      csv = list()
      for (i in 1 : nfiles)
      {

        csv[[i]] = read.csv(input$file1$datapath[i])

      }

      csv_names <- input$file1$datapath
      mydata <- do.call(rbind, lapply(csv_names, function(x) cbind(read.csv(x), name=strsplit(basename(x),'\\.')[[1]][1])))
      mydata
    }
  })

  output$plot.pdf <- downloadHandler(
    filename = function() {
      "plot.pdf"
    },
    content = function(file) {
      withProgress(message = 'Your file is downloading',
                   detail = 'This may take a minute or two...', value = 0, {
                     for (i in 1:10) {
                       incProgress(1/10)
                       Sys.sleep(0.5)}

                     pdf(file)
                     plot(testinput()[,1])
                     dev.off()

                   })
    }        
  )   
}

sprintf runs locally, but breaks on shinyapps.io server

By : user2325051

Date : March 29 2020, 07:55 AM

Does that help Wow, what's your R version? This works for me on R 3.4, but not R 3.2 or 3.5.

code :

# R 3.4.3
R.version.string
## [1] "R version 3.4.3 (2017-11-30)"
sprintf("%05.2#f", 123)
## [1] "123.00"

# R 3.2.3
R.version.string
## [1] "R version 3.2.3 (2015-12-10)"
sprintf("%05.2#f", 123)
## [1] "%05.2#f"

# R 3.5.0
R.version.string
## [1] "R version 3.5.0 (2018-04-23)"
sprintf("%05.2#f", 123)
## [1] "%05.2#f"

sprintf("%#05.0f", 123)
## [1] "0123."

Shiny App works locally, but not on the ShinyApps.io server

By : Zoe

Date : March 29 2020, 07:55 AM

it helps some times I guess you have your library() calls in your code as they are missing above.
Anyway, I believe you are missing the info about the host/port/user/password for the database you want to connect to. See https://github.com/r-dbi/RPostgres.