teal: Interactive Exploratory Data Analysis with Shiny Web-Applications

teal is a shiny-based interactive exploration framework for analyzing data. teal applications require app developers to specify:

• Data, which can be:
  • CDISC data, commonly used for clinical trial reporting
  • Independent datasets, for example from a data.frame
  • Related datasets, for example a set of data.frames with key columns to enable data joins
  • MultiAssayExperiment objects which are R data structures for representing and analyzing multi-omics experiments
• teal modules:
  • teal modules are shiny modules built within the teal framework that specify analysis to be performed. For example, it can be a module for exploring outliers in the data, or a module for visualizing the data in line plots. Although these can be created from scratch, many teal modules have been released and we recommend starting with modules found in the following packages:
    • teal.modules.general: general modules for exploring relational/independent/CDISC data
    • teal.modules.clinical: modules specific to CDISC data and clinical trial reporting
    • teal.modules.hermes: modules for analyzing MultiAssayExperiment objects

A lot of the functionality of the teal framework derives from the following packages:

• teal.data: creating and loading the data needed for teal applications.
• teal.widgets: shiny components used within teal.
• teal.slice: provides a filtering panel to allow filtering of data.
• teal.code: handles reproducibility of outputs.
• teal.logger: standardizes logging within teal framework.
• teal.reporter: allows teal applications to generate reports.

install.packages("teal")

# install.packages("pak")
pak::pak("insightsengineering/teal@*release")

install.packages("teal", repos = c("https://pharmaverse.r-universe.dev", getOption("repos")))

# install.packages("pak")
pak::pak("insightsengineering/teal")

Usage

library(teal)

app <- init(
  data = teal_data(iris = iris),
  modules = list(
    module(
      label = "iris histogram",
      server = function(input, output, session, data) {
        updateSelectInput(session = session,
                          inputId =  "var",
                          choices = names(data()[["iris"]])[1:4])

        output$hist <- renderPlot({
          req(input$var)
          hist(x = data()[["iris"]][[input$var]])
        })
      },
      ui = function(id) {
        ns <- NS(id)
        list(
          selectInput(inputId = ns("var"),
                      label =  "Column name",
                      choices = NULL),
          plotOutput(outputId = ns("hist"))
        )
      }
    )
  )
)

shinyApp(app$ui, app$server)

App recording

Please see teal.gallery and TLG Catalog to see examples of teal apps.

Please start with the “Technical Blueprint” article, “Getting Started” article, and then other package vignettes for more detailed guide.