Validate that dataset has a minimum number of observations

Usage

validate_has_data(
  x,
  min_nrow = NULL,
  complete = FALSE,
  allow_inf = TRUE,
  msg = NULL
)

Arguments

x: a data.frame
min_nrow: minimum number of rows in x
complete: logical default FALSE when set to TRUE then complete cases are checked.
allow_inf: logical default TRUE when set to FALSE then error thrown if any values are infinite.
msg: (character(1)) additional message to display alongside the default message.

Details

This function is a wrapper for shiny::validate.

Examples

library(scda)
ADSL <- synthetic_cdisc_data("latest")$adsl

ui <- fluidPage(
  sliderInput("obs", "Max Age",
    min = 0, max = 100, value = 50
  ),
  plotOutput("plot")
)

server <- function(input, output) {
  output$plot <- renderPlot({
    ADSL_f <- ADSL[ADSL$AGE <= input$obs, ]
    validate_has_data(ADSL_f, min_nrow = 10, complete = FALSE, msg = "Please adjust your Max Age")

    hist(ADSL_f$AGE, breaks = 5)
  })
}
if (FALSE) {
shinyApp(ui, server)
}