setArrangeMethod {parallelPlot}

Lines position

Description

Within a category box:

• the position of lines can be calculated to minimize crossings on the left of the box (fromLeft);

• the position of lines can be calculated to minimize crossings on the right (fromRight, default behavior);

• lines can be split in two points to minimize crossings on the left and on the right (fromBoth). To turn this ordering off (for example for performance reasons), arrangeMethod can also be set to fromNone.

Usage

setArrangeMethod(id, arrangeMethod)

Arguments

id

Output variable to read from (id which references the requested plot).

arrangeMethod

One of the available arrange methods (fromLeft, fromRight, fromBoth, fromNone).

Value

No return value, called from shiny applications for side effects.

Examples

 if(interactive() && require(shiny)) {
   library(shiny)
   library(parallelPlot)

   ui <- fluidPage(
     selectInput(
       "arrangeMethodSelect",
       "Arrange Method:",
       choices = list(
         "fromLeft" = "fromLeft", "fromRight" = "fromRight",
         "fromBoth" = "fromBoth", "fromNone" = "fromNone"
       ),
       selected = "fromRight"
     ),
     p("Selector controls the method used to arrange lines position in category boxes"),
     parallelPlotOutput("parPlot")
   )

   server <- function(input, output, session) {
     output$parPlot <- renderParallelPlot({
       categorical <-
         list(cyl = c(4, 6, 8), vs = c(0, 1), am = c(0, 1), gear = 3:5, carb = 1:8)
       parallelPlot(mtcars, categorical = categorical, refColumnDim = "cyl")
     })
     observeEvent(input$arrangeMethodSelect, {
       parallelPlot::setArrangeMethod("parPlot", input$arrangeMethodSelect)
     })
   }

   shinyApp(ui, server)
 }