textures: Assets
In JohnCoene/echarts4r.assets: Assets for the 'echarts4r' Package

Description Usage Arguments Details Functions Note Examples

Assets for the echarts4r package.

ea_asset(asset, convert = TRUE)

ea_convert(file)

ea_copy(asset, dir = "www")

ea_source(asset, dir = "www")

`asset`	Name of texture, see details below.
`convert`	Converts image to JSON formatted arrays.
`file`	Path to file.
`dir`	Directory to copy asset to.

Due to browser "same origin policy" security restrictions, loading textures from a file system may lead to a security exception, see https://github.com/mrdoob/three.js/wiki/How-to-run-things-locally. References to file locations work in Shiny apps, but not in stand-alone examples. The *texture functions facilitates transfer of image texture data from R into textures when convert is set to TRUE.

Valid run ea_bank asset.

ea_asset include asset.
ea_convert convert file to JSON formatted array.
ea_copy moves an asset to the folder of your choice. This is useful as convert = TRUE argment is computationally expensive, for instance, in Shiny, move the asset to your www folder for better perfromances.
ea_source source your copied asset.

See ea_bank for valid assets.

## Not run: 
library(shiny)
library(echarts4r)

# copy asset to www folder
ea_copy("world")

ui <- fluidPage(
  echarts4rOutput("globe")
)

server <- function(input, output){

  output$globe <- renderEcharts4r({

    e_charts() %>%
      e_globe(
        environment = ea_source("earth"),
        base_texture = e_globe_texture()
      )
  })

}

shinyApp(ui, server)

## End(Not run)