Item for typing in R expressions. These are eval-parsed in .GlobalEnv prior to return

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Description

Item for typing in R expressions. These are eval-parsed in .GlobalEnv prior to return

Usage

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expressionItem(value = "", name, label = name, help = "", tooltip = "",
  attr, model, editor, ...)

Arguments

value

Default value for the model

name

Required name for object. Names should be unique within a group of items

label

Optional label, default value is the name

help

Optional help string

tooltip

Optional tooltip to display

attr

A list of attributes to pass to widget on construction. Eg. attr=list(size=c(100,200))

model

Optional model. Useful if one wishes to use same model for multiple views

editor

Specification of editor (a view) to override default

...

Passed to parent proto object during call to proto

Value

A proto object. Call obj$show_help() to view its methods and properties.

See Also

numericItem, integerItem, stringItem, as these are similar, but also validate the final results

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