Shiny

问题 I am trying to deploy my dashboard from Rstudio IDE by clicking Publish, but it returned me below error message: Error in inferAppPrimaryDoc(appPrimaryDoc = appPrimaryDoc, appFiles = appFiles, : Application mode static requires at least one document. Calls: ... withStatus -> force -> bundleApp -> inferAppPrimaryDoc Execution halted When I checked my shinyappsio dashboard, the apps was uploaded there but when clicked the url it showed 202 not found. Can someone help me to solve this issue?

问题 In my shiny app I have a date range input and a group of checkboxes. The checkbox choices are determined based on the input$dateRange. I'm running into an issue where the plot is being redrawn twice every time the date range is changed. The first time it is redrawn it will use the new date ranges, but the old checkbox choices. Then the checkbox choices are updated and the plot is redrawn a second time. Is there any way to prevent redrawing the plot multiple times and only have it drawn once

问题 I want to create a shiny application that has an input for writing some R function or Command, reads it through the ui.R then passes it to the server.R that executes that R command to display the results. I spent hours searching about some example but couldn't find anything, I already know how to create Shiny apps using ui and server and pass the input values to server and work with them, but I have no idea if it's possible to create a shiny app like R where you can write the commands and

问题 I want to create a shiny application that has an input for writing some R function or Command, reads it through the ui.R then passes it to the server.R that executes that R command to display the results. I spent hours searching about some example but couldn't find anything, I already know how to create Shiny apps using ui and server and pass the input values to server and work with them, but I have no idea if it's possible to create a shiny app like R where you can write the commands and

问题 I have a simple toy example that uses an add/removeBtn module to add and remove UI from "first" module. I need to keep track of the number of times add/remove has been clicked. If I do not use modules, it is easy, but I am trying to do this in the context of nested modules. Code is below, but basically, I cannot seem to get access to the return from the addRmBtnServer() in the main server function. I am sure it is a simple fix, but I have tried many ways around this, but cannot seem to get

问题 Deploying my first shiny app -- simple html parser that lets users upload an html file and then parses it to get info on shares/mentions/likes on LinkedIn. The app runs fine locally (tested before deployment) and Rstudio does not show any errors with deployment. However, when I run it using the shinyapps link it appears the upload fails to complete and I don't get any output. What it looks like locally Opening App Uploading an .html file What it looks like on shinyapps.io I've redacted the

问题 ui <- fluidPage( radioButtons("dist", "Distribution type:", c("Normal" = "norm", "Uniform" = "unif", "Log-normal" = "lnorm", "Exponential" = "exp"))) server <- function(input, output) {} I would like the font colors of "Normal" and "Uniform" to be different than those of the other choices. Let's say the color of the first two choices should be red. Anyone who can achieve that? 回答1: Just look at the examples in ?radioButtons . This will give you instructions on how to apply HTML tags to

问题 ui <- fluidPage( radioButtons("dist", "Distribution type:", c("Normal" = "norm", "Uniform" = "unif", "Log-normal" = "lnorm", "Exponential" = "exp"))) server <- function(input, output) {} I would like the font colors of "Normal" and "Uniform" to be different than those of the other choices. Let's say the color of the first two choices should be red. Anyone who can achieve that? 回答1: Just look at the examples in ?radioButtons . This will give you instructions on how to apply HTML tags to

问题 ui <- fluidPage( radioButtons("dist", "Distribution type:", c("Normal" = "norm", "Uniform" = "unif", "Log-normal" = "lnorm", "Exponential" = "exp"))) server <- function(input, output) {} I would like the font colors of "Normal" and "Uniform" to be different than those of the other choices. Let's say the color of the first two choices should be red. Anyone who can achieve that? 回答1: Just look at the examples in ?radioButtons . This will give you instructions on how to apply HTML tags to

问题 I wish to remove the all/none checkbox from a Reactable table used in a Shiny app. For a regular R script, an answer was suggested here. However this solution fails with: Warning in renderWidget(instance) : Ignoring prepended content; prependContent can't be used in a Shiny render call The code below fails to remove the checkbox with the error mentioned above. So, how do I remove the all/none checkbox of a Reactable table in a Shiny app. library(reactable) library(htmlwidgets) javascript <-