input_select: Create interactive control to select one (or more options)...

In rpruim/ggvis2: Interactive grammar of graphics

Description

• input_radiobuttons only ever selects one value

• input_checkboxgroup can alway select multiple values

• input_select can select only one if multiple = FALSE, otherwise the user can select multiple by using modifier keys

Usage

input_select(choices, selected = NULL, multiple = FALSE, label = "",
  id = rand_id("select_"), map = identity, selectize = FALSE)

input_radiobuttons(choices, selected = NULL, label = "",
  id = rand_id("radio_"), map = identity)

input_checkboxgroup(choices, selected = NULL, label = "",
  id = rand_id("radio_"), map = identity)

Arguments

choices	List of values to select from. If elements of the list are named then that name rather than the value is displayed to the user.
selected	The initially selected value (or multiple values if multiple = TRUE). If not specified then defaults to the first value for single-select lists and no values for multiple select lists.
multiple	Is selection of multiple items allowed?
label	Display label for the control, or NULL
id	A unique identifier for this input. Usually generated automatically.
map	A function with single argument x, the value of the control on the client. Returns a modified value.
selectize	Whether to use selectize.js or not.

See Also

Other interactive input: input_checkbox; input_numeric, input_text; input_slider

Examples

# Dropdown
input_select(c("a", "b", "c"))
input_select(c("a", "b", "c"), multiple = TRUE)
input_select(c("a", "b", "c"), selected = "c")

# If you want to select variable names, you need to convert
# the output of the input to a name with map so that they get
# computed correctly
input_select(names(mtcars), map = as.name)

# Radio buttons
input_radiobuttons(choices = c("Linear" = "lm", "LOESS" = "loess"),
                   label = "Model type")
input_radiobuttons(choices = c("Linear" = "lm", "LOESS" = "loess"),
                   selected = "loess",
                   label = "Model type")

# Used in layer_model_predictions
mtcars %>% ggvis(~wt, ~mpg) %>%
  layer_model_predictions(model = input_radiobuttons(
    choices = c("Linear" = "lm", "LOESS" = "loess"),
    selected = "loess",
    label = "Model type"))

# Checkbox group
mtcars %>% ggvis(x = ~wt, y = ~mpg) %>%
  layer_points(
    fill := input_checkboxgroup(
      choices = c("Red" = "r", "Green" = "g", "Blue" = "b"),
      label = "Point color components",
      map = function(val) {
        rgb(0.8 * "r" %in% val, 0.8 * "g" %in% val, 0.8 * "b" %in% val)
      }
    )
  )

rpruim/ggvis2 documentation built on May 28, 2019, 2:34 a.m.