Categorical filter controls — filter

Creates a select box or list of checkboxes, for filtering a SharedData object based on categorical data.

filter_select(id, label, sharedData, group, allLevels = FALSE, multiple = TRUE)

filter_checkbox(
  id,
  label,
  sharedData,
  group,
  allLevels = FALSE,
  inline = FALSE,
  columns = 1
)

Arguments

id: An HTML element ID; must be unique within the web page
label: A human-readable label
sharedData: SharedData object with the data to filter
group: A one-sided formula whose values will populate this select box. Generally this should be a character or factor column; if not, it will be coerced to character.
allLevels: If the vector described by group is factor-based, should all the levels be displayed as options, or only ones that are present in the data?
multiple: Can multiple values be selected?
inline: If TRUE, render checkbox options horizontally instead of vertically.
columns: Number of columns the options should be arranged into.

Examples

## Only run examples in interactive R sessions
if (interactive()) {

sd <- SharedData$new(chickwts)
filter_select("feedtype", "Feed type", sd, "feed")

}