View source: R/as.dfObj.bare.R
as.tblBlocks | R Documentation |
tblblocks
Object Promote a data frame to a tblBlocks
object. This is an internal
function not intended to be called by package users.
as.tblBlocks(x)
x |
A data frame, with each row representing one table block. See
|
Normally a standard set of structure-based blocks is created from a
tblEntries
object via function tblBlocks
. This function
allows blocks to be created or edited directly in a data frame.
A block is simply a rectangular set of contiguous table cells. Any number
of blocks may be defined, and blocks may overlap. A block may be empty
(nr
and/or nc
equal to 0, and corresponding arow*
and
acol*
values set to NA.) id
must not contain semicolons.
Columns arow1
, arow2
, acol1
and acol2
refer to
row and column numbers in the augmented row-column grid of the table; see
adim
for more information.
In addition to the required columns listed above, x
should contain
any other columns that will be used by a blockStyle
to add
graphical properties to blocks. These should be listed in the
match_columns
attribute of the style.
If x
is already a tblBlocks
object, this function does some
validity checks. If x
is NULL, a valid but empty tblBlocks
object is returned.
An S3 object of class tblBlocks
. It is just the data frame
x
with the additional class tblBlocks
(after checking that
x
contains the necessary columns), and attribute
rowgroupSize
. The latter is copied from x
if present and
set to NA if not.
tblBlocks
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