Spreadsheet Interface for Entering Data
A spreadsheet-like editor for entering or editing data.
data.entry(…, Modes = NULL, Names = NULL) dataentry(data, modes) de(…, Modes = list(), Names = NULL)
- A list of variables: currently these should be numeric or character vectors or list containing such vectors.
- The modes to be used for the variables.
- The names to be used for the variables.
- A list of numeric and/or character vectors.
- A list of length up to that of
datagiving the modes of (some of) the variables.
The data entry editor is only available on some platforms and GUIs.
Where available it provides a means to visually edit a matrix or
a collection of variables (including a data frame) as described in the
data.entry has side effects, any changes made in the
spreadsheet are reflected in the variables. The functions
de.restore are designed to
help achieve these side effects. If the user passes in a matrix,
X say, then the matrix is broken into columns before
dataentry is called. Then on return the columns are collected
and glued back together and the result assigned to the variable
X. If you don't want this behaviour use dataentry directly. The primitive function is
dataentry. It takes a list of
vectors of possibly different lengths and modes (the second argument)
and opens a spreadsheet with these variables being the columns.
The columns of the dataentry window are returned as vectors in a
list when the spreadsheet is closed.
de.ncols counts the number of columns which are supplied as arguments
data.entry. It attempts to count columns in lists, matrices
de.setup sets things up so that on return the
columns can be regrouped and reassigned to the correct name. This
is handled by
dataentry return the edited value of their
data.entry invisibly returns a vector of variable
names but its main value is its side effect of assigning new version
of those variables in the user's workspace.
The details of interface to the data grid may differ by platform and
GUI. The following description applies to
the X11-based implementation under Unix.
the GraphApp-based implementation under Windows. You can navigate around the grid using the cursor keys or by clicking
with the (left) mouse button on any cell. The active cell is
highlighted by thickening the surrounding rectangle. Moving to the
right or down will scroll the grid as needed: there is no constraint
to the rows or columns currently in use. There are alternative ways to navigate using the keys. Return and
(keypad) Enter and LineFeed all move down. Tab moves right and
Shift-Tab move left. Home moves to the top left. PageDown or Control-F moves down a page, and PageUp or
Control-B up by a page. End will show the last used column and the
last few rows used (in any column). Using any other key starts an editing process on the currently
selected cell: moving away from that cell enters the edited value
whereas Esc cancels the edit and restores the previous value. When
the editing process starts the cell is cleared.
The cursor changes to an I-beam to indicate that the cell is in enter mode.
In numerical columns
(the default) only letters making up a valid number (including
-.eE) are accepted, and entering an invalid edited value (such
as blank) enters
NA in that cell. The last entered value can
be deleted using the BackSpace or Del(ete) key. Only a limited
number of characters (currently 29) can be entered in a cell, and if
necessary only the start or end of the string will be displayed, with the
omissions indicated by
<. (The start is shown
except when editing.) Double-clicking on a cell selects the cell and makes it into an
editable field (a cursor will appear at the end of the text and it
will change to the text highlight colour). The edited text is
entered by selecting another cell, for example by hitting Return.
There is no way to cancel the edits. The field will be expanded to
the right if necessary to accommodate existing long strings, so it is
preferable not to edit in the right-most displayed column. (The
editable field is itself scrollable.) Entering a value in a cell further down a column than the last used
cell extends the variable and fills the gap (if any) by
shown on screen). The column names can only be selected by clicking in them. This gives
a popup menu to select the column type (currently Real (numeric) or
Character) or to change the name. Changing the type converts the
current contents of the column (and converting from Character to Real
If changing the name is selected the
header cell becomes editable (and is cleared). As with all cells, the
value is entered by moving away from the cell by clicking elsewhere or
by any of the keys for moving down (only).
Enter the changes made in the popup window by clicking on its close box. New columns are created by entering values in them (and not by just
assigning a new name). The mode of the column is auto-detected from
the first value entered: if this is a valid number it gives a numeric
column. Unused columns are ignored, so
adding data in
var5 to a three-column grid adds one extra
variable, not two. There is a popup-menu accessed by right-clicking anywhere in the window
that refers to the currently selected cell. This can copy the value to
or paste from the clipboard, or paste in common values in that column.
Copying and pasting can also be accessed by the usual keyboard shortcuts
Control-C and Control-V. Columns can be resized by selecting and dragging a line (the cursor
will change) within limits: columns must be between 4 and 50 chars wide.
The Autosize item on the popup menu will resize the currently selected
Copy button copies the currently selected cell:
paste copies the last copied value to the current cell, and
right-clicking selects a cell and copies in the value.
Initially the value is blank, and attempts to paste a blank value will
have no effect. Control-L will refresh the display, recalculating field widths to fit
the current entries. In the default mode the column widths are chosen to fit the contents
of each column, with a default of 10 characters for empty columns.
you can specify fixed column widths by setting option
de.cellwidth to the required fixed width (in characters).
(set it to zero to return to variable widths). The displayed
width of any field is limited to
600 pixels (and by the window width).
50 characters (and by the window width). The initial size of the data editor window is taken from the default
dimensions of a pager (see
Rconsole), but adjusted
downwards to show a whole number of rows and columns.
The data entry window responds to X resources of class
geometry are utilized.
# call data entry with variables x and y ## Not run: data.entry(x, y)