Creates a parcoords-like object that can be used to customize and control a parcoords that has already been rendered. For use in Shiny apps and Shiny docs only.
parcoordsProxy(parcoordsId, session = shiny::getDefaultReactiveDomain(), deferUntilFlush = TRUE)
| parcoordsId | single-element character vector indicating the output ID of the parcoords to modify (if invoked from a Shiny module, the namespace will be added automatically) |
|---|---|
| session | the Shiny session object to which the map belongs; usually the default value will suffice |
| deferUntilFlush | indicates whether actions performed against this
instance should be carried out right away, or whether they should be held
until after the next time all of the outputs are updated; defaults to
|
Normally, you create a parcoords chart using the parcoords function.
This creates an in-memory representation of a parcoords that you can customize.
Such a parcoords can be printed at the R console, included in an R Markdown
document, or rendered as a Shiny output.
In the case of Shiny, you may want to further customize a parcoords, even after it is rendered to an output. At this point, the in-memory representation of the parcoords is long gone, and the user's web browser has already realized the parcoords instance.
This is where parcoordsProxy comes in. It returns an object that can
stand in for the usual parcoords object. The usual parcoords functions
can be called, and instead of customizing an in-memory representation,
these commands will execute on the live parcoords instance.