Embedding Shiny app in knitr document

Question

I have a shiny app which has a ui.R, server.R and global.R. The app directory (name = dash) contains the folder 'data' in which the dataset resides. Also, this app folder is inside the project's working directory. In global.R I read the data as:

dash <- read.table("data/ntraj1acc.txt", sep=",", header=T)

This app works fine. Now, I am trying to embed it in a ioslides presentation which otherwise works good. The example in External Applications section on rmarkdown website also works perfect in my presentation. But when I replace the path in system.file to my app, I get the error:

No Shiny application exists at the path ""

Here is how I replaced the path:

shinyAppDir(
  system.file("dash", package="shiny"),
  options=list(
    width="100%", height=700
  )
)

After the error, I tried following:

shinyAppDir(
  "C:/Users/durraniu/Documents/Trajectory-one/dash",
  options=list(
    width="100%", height=700
  )
)

But then I got a new error:

object 'dash' not found

Which means that it is not parsing global.R.

How can I fix this problem?

Answer 1

I successfully embeded an application within an interactive shiny document with the following rmarkdown chunk:

```
shinyAppDir("D:/Documents/OneDrive/Notes/R-Explore/shiny/01-ages/",
  options=list(
    width="100%", height=550
  )
) 
```

All 3 files: the ui.R, server.R, and test.Rmd are at the above absolute path