Create a matrix of radio buttons.

Create a matrix of radio buttons.

radioMatrixInput(inputId, responseItems, choices, selected = NULL, ...)

Arguments

inputId

The input id

responseItems

The questions to be asked (row labels)

choices

Possible choices (column labels)

selected

Initial selected value

...

Additional arguments specific to shinysurveys required questions.

Value

A matrix of radio buttons that can be added to a UI definition. When run in a Shiny application, this will return NULL until all possible response items have been answered, at which time a data frame with the question_id, question_type, and response, the format used in getSurveyData.

Examples

# For use as a normal Shiny input:

if (interactive()) {

  library(shiny)

  ui <- fluidPage(
    radioMatrixInput("matInput",
                     responseItems = c("Love sushi?", "Love chocolate?"),
                     choices = c("Disagree", "Neutral", "Agree"))
  )

  server <- function(input, output, session) {
    observe({
      print(input$matInput)
    })
  }

  shinyApp(ui, server)

}

# For use in {shinysurveys}

if (interactive()) {

 df <- data.frame(
   question = c(rep("I love sushi.", 3), rep("I love chocolate.",3),
   "What's your favorite food?", rep("Goat cheese is the GOAT.", 5),
   rep("Yogurt and berries are a great snack.",5),
   rep("SunButter® is a fantastic alternative to peanut butter.", 5)),
   option = c(rep(c("Disagree", "Neutral", "Agree"), 2), "text",
   rep(c("Strongly Disagree", "Disagree", "Neutral", "Agree", "Strongly Agree"), 3)),
   input_type = c(rep("matrix", 6), "text", rep("matrix", 15)),
   # For matrix questions, the IDs should be the same for each question
   # but different for each matrix input unit
   input_id = c(rep("matId", 6), "favorite_food", rep("matId2", 15)),
   dependence = NA,
   dependence_value = NA,
   required = FALSE
 )

 library(shiny)

 ui <- fluidPage(
   surveyOutput(df)
 )

 server <- function(input, output, session) {
   renderSurvey()
   observe({
     print(input$matId)
     print(input$favorite_food)
     print(input$matId2)
   })
 }

 shinyApp(ui, server)

}