update_continuous_breaks: Update a continuous scale in Shiny

In dreamRs/r2d3maps: Create Maps with D3

Description

Update a continuous scale in Shiny

Usage

update_continuous_breaks(proxy, var, palette = NULL, direction = 1,
  n_breaks = 5, style = "pretty")

Arguments

proxy	A d3_map_proxy object.
var	New var to use on the map.
palette	Color palette, you can use Viridis or Brewer color palette.
direction	Sets the order of colors in the scale. If 1, the default, colors are ordered from darkest to lightest. If -1, the order of colors is reversed.
n_breaks	Number of breaks to cut data (depending on style, number of breaks can be re-computed).
style	Style for computing breaks, see classIntervals.

Examples

## Not run: 

if (interactive()) {

library(r2d3maps)
library(shiny)

# data about Paris
data("paris")


# app
ui <- fluidPage(
  fluidRow(
    column(
      width = 8, offset = 2,
      tags$h2("Proxy for continuous breaks scale"),
      d3Output(outputId = "mymap"),
      selectInput(
        inputId = "var", label = "Variable:",
        choices = grep(pattern = "AGE", x = names(paris), value = TRUE)
      )
    )
  )
)

server <- function(input, output, session) {

  output$mymap <- renderD3({
    d3_map(shape = paris) %>%
      add_continuous_breaks(var = "AGE_00", palette = "Blues") %>%
      add_legend(d3_format = ".2s")
  })

  observeEvent(input$var, {
    d3_map_proxy(shinyId = "mymap", data = paris) %>%
      update_continuous_breaks(var = input$var, palette = "Blues")
  }, ignoreInit = TRUE)

}

shinyApp(ui, server)

}


## End(Not run)

dreamRs/r2d3maps documentation built on May 25, 2019, 8:17 a.m.