I want to maximise the usable screen width of the mainPanel for an Rstudio shiny webpage.
mainPanel
In my webpage, the sidePanel is used to select p
sidePanel
Perhaps you could work with a toggle-button (e.g. named "set parameters") which opens or closes a conditionalPanel. Such panel then disappears or pops-up when needed. See: https://shiny.rstudio.com/reference/shiny/0.13.2/conditionalPanel.html
conditionalPanel