Include Data By Embedding File Contents Inside Code Cell
This R Shinylive app example demonstrates the process of embedding data directly into the application using the ## file: directive.
Example App
The following R Shinylive app is a demo of a Shiny app reading data from an embedded file (fruit.csv) in a code cell. To modify the data, navigate to the fruit.csv editor tab located to the right of app.R in the editor view.
We’ve enabled the editor view to emphasize that the data is embedded within the app. Typically, R Shinylive applications only include the app running under the viewer view.
#| standalone: true
#| components: [editor, viewer]
#| layout: vertical
#| viewerHeight: 300
## file: app.R
library(shiny)
ui <- fluidPage(
titlePanel("Hello Shiny!"),
verbatimTextOutput(outputId = "dataVariables")
)
server <- function(input, output) {
output$dataVariables <- renderPrint({
ds <- read.csv("fruit.csv")
ds
})
}
# Create Shiny app ----
shinyApp(ui = ui, server = server)
## file: fruit.csv
id,name,count
1,"apple",20
2,"orange",12
3,"grape",100The file Directive
Inside a {shinylive-r} code cell, you can embed a text file using:
```{shinylive-r}
## file: my-file.txt
contents here
```To include data read by the app through a CSV, use:
```{shinylive-r}
## file: fruit.csv
id,name,count
1,"apple",20
2,"orange",12
3,"grape",100
```R Shinylive apps currently do not support loading binary data. All file directives are considered to have the type declaration of text. For example:
```{shinylive-r}
## file: fruit.csv
```will be treated as:
```{shinylive-r}
## file: fruit.csv
## type: text
```Including Shiny App
In the code cell, place all Shiny app code under the ## file: app.R directive, like this:
```{shinylive-r}
#| standalone: true
## file: app.R
library(shiny)
ui <- fluidPage(
# Shiny app UI source
)
server <- function(input, output) {
# Shiny app server source
}
# Create Shiny app ----
shinyApp(ui = ui, server = server)
```Once done, include the data embedding in the same cell:
```{shinylive-r}
#| standalone: true
## file: app.R
# Shiny app code from above
## file: fruit.csv
id,name,count
1,"apple",20
```Source of App
View the full source of the app here:
---
title: "Embedded Data"
format:
html:
resources:
- shinylive-sw.js
filters:
- shinylive
---
This is an R Shinylive code cell with embedded data!
```{shinylive-r}
#| standalone: true
#| components: [editor, viewer]
#| layout: vertical
#| viewerHeight: 300
## file: app.R
library(shiny)
ui <- fluidPage(
titlePanel("Hello Shiny!"),
verbatimTextOutput(outputId = "dataVariables")
)
server <- function(input, output) {
output$dataVariables <- renderPrint({
ds <- read.csv("fruit.csv")
ds
})
}
# Create Shiny app ----
shinyApp(ui = ui, server = server)
## file: fruit.csv
id,name,count
1,"apple",20
2,"orange",12
3,"grape",100
```