Learn R Programming

traitr (version 0.14)

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

Description

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

Usage

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