runDemo

[hadley]

It would be useful if shiny had a runDemo function like this:

runDemo <- function(package, demo, ...) {
  path <- system.file("demo", demo, package = package)
  if (path == "") stop("Couldn't find demo ", demo, " in ", package, call. = FALSE)

  runApp(path, ...)
}

then you could easily run demos in installed packages:

runDemo("apps/basic", "gigvis")

That might almost be a better way to implement runExample():

runExample <- function(example, ...) runApp("shiny", example, ...)

although then you'd have to move the existing examples into the demo directory - this would be a good idea because it's fits the R package conventions a little better, and reduces the confusion between runExample() and example()

[alexbbrown]

I don't know whether it works like this now, but it would be great if you could cut n paste from a gist URL or GitHub URL into the first argument of such things.

-Alex Brown

On Aug 14, 2013, at 6:08 PM, hadley wickham [email protected] wrote:

It would be useful if shiny had a runDemo function like this:

runDemo <- function(package, demo, ...) {
path <- system.file("demo", demo, package = package)
if (path == "") stop("Couldn't find demo ", demo, " in ", package, call. = FALSE)

runApp(path, ...)
}
then you could easily run demos in installed packages:

runDemo("apps/basic", "gigvis")
That might almost be a better way to implement runExample():

runExample <- function(example, ...) runApp("shiny", example, ...)
although then you'd have to move the existing examples into the demo directory - this would be a good idea because it's fits the R package conventions a little better, and reduces the confusion between runExample() and example()

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[dougmet]

Found this just before posting a similar issue. I think it would be nice to add a package argument to runExample. This would turn the following line:

shiny::runApp(system.file("shiny-examples", "basic", package="radarchart"))

into

shiny::runExample("basic", package="radarchart")

Happy to submit a PR if there's interest. The main thing is to agree on a standard directory to keep shiny examples. Here I've used shiny-examples, similar to this post but some use examples some use demo.

For me the name isn't important, but having this function as part of shiny would be a great way to encourage consistency.

[0tertra]

already added a pull request for this before looking into the issues.
You can find the request here #1458

[alandipert]

Closing because dupe of #1458