Pick Subsets from a Vector
Provides a Tk dialog or a text-based menu for interactive selection of one or more subsets from a vector.
pickFrom(vec, nsets = 1, return.indices = FALSE,
setlabels = NULL, edit.setlabels = TRUE,
subset = TRUE,
warningText = "one or more selections empty",
title = "Subset picker",
items.label = "Pick from",
labels.prompt = "Your label for this set",
list.height = 20,
items.scrollbar = TRUE,
preserve.order = TRUE,
graphics = TRUE,
listFont = "Courier 12",
labelFont = "Helvetica 11",
windowPos = "+150+30")vec |
a vector |
nsets |
a positive integer, the number of subsets to be selected |
return.indices |
logical, whether indices ( |
setlabels |
a character vector of labels for the subsets |
edit.setlabels |
logical, determines whether a textbox is provided for editing the label of each subset |
subset |
logical, character or numeric vector indicating which
elements of |
warningText |
character, text to use as a warning in situations where no selection is made into one or more of the specified sets |
title |
character, title of the Tk dialog window |
items.label |
character, a label for the set of items to be selected from |
labels.prompt |
character, a prompt for textual set label(s) |
list.height |
maximum number of elements of |
items.scrollbar |
logical, whether a scrollbar is to be provided when
|
preserve.order |
logical: should the order of items in |
graphics |
logical: should a dialog be used, if possible? |
listFont |
a Tk font specification for the items list and subsets |
labelFont |
a Tk font specification for the labels entrybox |
windowPos |
position of the Tk dialog, in pixels from top left of display |
If graphics = TRUE and the tcltk package is operational,
a Tk dialog is used, otherwise a text menu.
If return.indices is used together with subset, the
indices returned relate to vec, not to vec[subset].
EITHER (in the case of a text menu or if the dialog is ended with "OK")
a list, with nsets components. Each component is a
selected sub-vector, or a numeric vector of indices for a
selected sub-vector (if return.indices is TRUE).
The component names are as specified in setlabels, or
as specified interactively.
OR (if the dialog is ended either "Cancel" or the close-window control
button is used)
NULL.
David Firth, with contributions from Heather Turner
## These examples cannot be run by example() but should be OK when pasted
## into an interactive R session
## Not run:
pickFrom(c("apple", "banana", "plum", "grapefruit"), nsets = 2,
preserve.order = FALSE,
setlabels = c("Fruits I like", "Fruits I tolerate"))
## End(Not run)
## Not run:
## Type selections as e.g. 1:2, 4
pickFrom(c("apple", "banana", "plum", "grapefruit"), nsets = 2,
preserve.order = FALSE,
setlabels = c("Fruits I like", "Fruits I tolerate"),
graphics = FALSE)
## End(Not run)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.