Shiny

问题 I want to use the output of ggtern() in a shiny app. However it seems to fail due to some constraints. This is what it should look like: This is the actual shiny output: See here for a reproducible example: library(shiny) library(ggtern) ui <- fluidPage( mainPanel( plotOutput("ggtern") ) ) server <- function(input, output) { output$ggtern <- renderPlot({ ggtern(data.frame(x=10, y=30, z=60), aes(x, y, z)) + geom_point() }) } shinyApp(ui = ui, server = server) Do I overlook something? 回答1:

问题 Hoping the everyone is doing good in these tough times. In my demo app the observeEvent when run from the module server side updates the numeric value instantly even when I am using ignoreInit = TRUE . This argument is working fine in Shiny apps without the shiny modules. I ran into a this trivial problem while using observeEvent from module server which I am not understanding why? Can anyone explain the reason for such differential behavior in Shiny apps? Below is my Demo code library(shiny)

问题 I want to create a small shiny app to explore a scoring function that I am writing for a set of data observations. This is my first shiny app so bear with me. What I want to show is the data table where one column is computed by a function (let's say f(x) = x^2 + y) where x is another (numeric) column in the table and y should be adjustable with a slider in the sidebar. I want to make the table reactive, so that as soon as the slider is adjusted, the content that is displayed will be updated.

问题 I'm trying to build a docker image for my shiny app. My docker image is 'successfully' built, but cannot be started on localhost. Checking the logs in image building process, I saw error messages like below: ERROR: dependency ‘sf’ is not available for package ‘leafpop’ * removing ‘/usr/local/lib/R/site-library/leafpop’ .......... 1: In install.packages(c("remotes", "shiny", "shinythemes", "shinydashboard", :> installation of package ‘units’ had non-zero exit status 2: In install.packages(c(

问题 I'm trying to create a dashboard with a Sankey diagram and a selectInput that lets the end user choose filter the source column. I'm having trouble trying to figure out how to use the reactive expressions to filter the data. It's sort of complex because it's not just one step of reading the data in as it has to be preprocessed. I've tried putting the reactive filter at the end but it isn't working, as you'll see below. I tried also making each step reactive but that was a mess that certainly

问题 I'm trying to create a dashboard with a Sankey diagram and a selectInput that lets the end user choose filter the source column. I'm having trouble trying to figure out how to use the reactive expressions to filter the data. It's sort of complex because it's not just one step of reading the data in as it has to be preprocessed. I've tried putting the reactive filter at the end but it isn't working, as you'll see below. I tried also making each step reactive but that was a mess that certainly

问题 I have a shiny app which displays 3 tabs. In the Documents tab there is a table. When the user clicks on the setosa of the 1st row he is moving to the View tab (visible only when click happens) and sees a table. When the user clicks on the setosa of the 2nd row he is moving to the View tab and sees another table. Also those tables must be visible only on View tab. The app seems to work fine but if I click on the 1st row setosa ,move to the View tab, return to the Documents tab again and try

问题 I have a shiny app which displays 3 tabs. In the Documents tab there is a table. When the user clicks on the setosa of the 1st row he is moving to the View tab (visible only when click happens) and sees a table. When the user clicks on the setosa of the 2nd row he is moving to the View tab and sees another table. Also those tables must be visible only on View tab. The app seems to work fine but if I click on the 1st row setosa ,move to the View tab, return to the Documents tab again and try

问题 I got the Error: Invalid input: time_trans works with objects of class POSIXct only when I run the program in shiny. And this is my code in shiny : library(ggplot2) library(Cairo) # For nicer ggplot2 output when deployed on Linux library(shiny) ui <- fluidPage( fluidRow( column(width = 4, class = "well", h4("Brush and double-click to zoom"), plotOutput("plot1", height = 300, dblclick = "plot1_dblclick", brush = brushOpts( id = "plot1_brush", resetOnNew = TRUE ))), column(width = 6, plotOutput

问题 The executable code below is generating clusters and showing on the maps made by the leaflet (I inserted a figure of the visual structure of my shiny below). However, I would like help with my Filter2, which was just to show the properties inserted in the cluster selected in Filter1. However, for example, considering sliderInput as 3. Cluster 1 has 3 properties, but is showing the selection of 7 properties (Error below). Therefore, I would like you to help me adjust my Filter2 so that I can