inst/app/ui/parameters_scatter.R

In aljrico/tubeshiny: What the Package Does (One Line, Title Case)

find_numerical_variables <- function(df) {
  df <- data.table(values$df_data)
  l <- lapply(df, is.numeric) %>% unlist()
  c <- df[, ..l] %>% colnames()
  return(c)
}

find_categorical_variables <- function(df) {
  df <- data.table(values$df_data)
  cols <- colnames(df)
  output <- c()
  for (c in cols) if ((df[[c]] %>% unique() %>% length()) < 0.15 * nrow(df)) output <- c(output, c)

  return(output)
}

output$parameters_scatter <- renderUI({
  num_vars <- find_numerical_variables(values$df_data)
  cat_vars <- find_categorical_variables(values$df_data)
  lines <- values$df_data$Line %>% unique()
  min_opened <- values$df_data$Opened %>% min()
  max_opened <- values$df_data$Opened %>% max()
  
  min_month <- values$df_data$Month %>% min()
  max_month <- values$df_data$Month %>% max()
  
  ui_elements <-
    list(
      selectInput(inputId = "scatter_x_lab", label = "X Variable", choices = num_vars, selected = "Month"),
      selectInput(inputId = "scatter_y_lab", label = "Y Variable", choices = num_vars, selected = "Excess"),
      selectInput(inputId = "scatter_colour", label = "Colour", choices = c("None", cat_vars), selected = "Line"),
      shinyWidgets::pickerInput(
        inputId = "scatter_line_filter",
        label = "Filter by Line",
        choices = lines,
        selected = lines %>% sample(3),
        options = list(
          `actions-box` = TRUE,
          size = 10,
          `selected-text-format` = "count > 3"
        ),
        multiple = TRUE
      ),
      sliderInput("scatter_slider_opened",
        label = "Selected 'Opened' Range",
        min = min_opened,
        max = max_opened,
        value = c(
          min_opened,
          max_opened
        )
      ),
      sliderInput("scatter_slider_month",
                  label = "Selected 'Month' Range",
                  min = min_month,
                  max = max_month,
                  value = c(
                    min_month,
                    max_month
                  )
      )
    )

  do.call(tagList, ui_elements)
})