Combine documents in a dfm by a grouping variable, which can also be
one of the docvars attached to the dfm. This is identical in
functionality to using the
"groups" argument in
either: a character vector containing the names of document variables to be used for grouping; or a factor or object that can be coerced into a factor equal in length or rows to the number of documents. See groups for details.
dfm_group returns a dfm whose documents are equal to
the unique group combinations, and whose cell values are the sums of the
previous values summed by group. Document-level variables that have no
variation within groups are saved in docvars. Document-level
variables that are lists are dropped from grouping, even when these exhibit
no variation within groups.
fill = TRUE offers a way to "pad" a dfm with document
groups that may not have been observed, but for which an empty document is
needed, for various reasons. If
groups is a factor of dates, for
instance, then using
fill = TRUE ensures that the new documents will
consist of one row of the dfm per date, regardless of whether any documents
previously existed with that date.
1 2 3 4 5 6 7 8 9
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.