linevis (version 1.0.0)

centerItem: Move the window such that given item or items are centered

Description

Move the window such that given item or items are centered

Usage

centerItem(id, itemId, options)

Value

None, side-effect is Javascript call

Arguments

id

graph2d id or a linevis object (the output from linevis())

itemId

A vector (or single value) of the item ids to center

options

Named list of options controlling mainly the animation. Most common option is "animation" = TRUE/FALSE. For a full list of options, see the "focus" method in the official graph2d documentation

Examples

if (FALSE) {
linevis(data.frame(
          start = c(Sys.Date() - 1, Sys.Date(), Sys.Date() + 1),
          content = c("Item 1", "Item 2", "Item 3"))
) %>%
  centerItem(1)
}

if (interactive()) {
library(shiny)
shinyApp(
  ui = fluidPage(
    linevisOutput("graph2d"),
    actionButton("btn", "Center around item 1")
  ),
  server = function(input, output) {
    output$graph2d <- renderLinevis(
      linevis(
        data.frame(
          start = c(Sys.Date() - 1, Sys.Date(), Sys.Date() + 1),
          content = c("Item 1", "Item 2", "Item 3"))
      )
    )
    observeEvent(input$btn, {
      centerItem("graph2d", 1)
    })
  }
)
}