Nested Boxes

New features

• Using the corpus class throughout is an opportunity to keep the corpus ID
  together with the registry directory of a corpus. And as we are able now to
  handle corpora defined in different registry files, the temporary registry
  directory is not necessary any more. It still exists, yet only for temporary
  corpora and corpora that are described by registry files that cannot be
  modified, i.e. corpora shipped in packages. The test corpus of the polmineR
  package is an important respective scenario.
• get_token_stream() now has an argument min_length.
• registry_*() functions are superseded by RcppCWB::corpus_* functions and
  throw a warning that they are deprecated.
• The REUTERS corpus is not included in the package any more: There was an
  identical copy of the REUTERS corpus included in the RcppCWB package. All
  examples and unit tests now use use(pkg = "RcppCWB", corpus = "REUTERS") to
  make the REUTERS corpus available.
• size() works for partition/subcorpus with s-attribute that is a child
  of the s-attribute the object is based on #216.
• The trim()-method for context objects has a new argument fn for
  supplying a (trimming) function to be applied all match contexts.
• A new s-attribute "protocol_date" has been added to sample corpus
  "GERMAPARLMINI", so that sample data for nested corpus data is available. To
  prevent confusion between s-attributes "protocol_date" (at protocol-level) and
  "date" (at speaker-level), argument s_attribute_date is stated explicitly in
  all examples.
• Method size() has been refactored to work with nested corpora.
• Method encoding() and replace method encoding<- are defined for call
  and quosure objects to get and adjust the encoding, replacing a previously
  unexported function .recode_call().
• The subset() methods for corpus and subcorpus objects now handle
  expressions for subsetting as quosures, laying the ground to program against
  subset(), see respective update of the examples, #212.
• Functionality for indexing bundle objects with single square brackets is
  developed now. Indexing with double brackets, suppling multiple values for i
  is deprecated. The aim is a consistent behavior that a bundle indexed by [
  will always return a bundle, and indexing with [[ always gets a single object
  from the list of objects. #214

Minor improvements

• The use() function now has an additional argument corpus to specify which
  corpus from a package shall be loaded (#138).
• The get_token_stream()-method for partition_bundle objects is more memory
  efficient (no exhaustion for big corpora) and faster.
• Significantly improved performance of split()-method for corpus objects.
• The split()-method for corpus objects offers progress bar.
• as.speeches() for corpus objects has new argument subset, offering a
  significantly faster approach than the method for subcorpus objects in many
  cases.
• The size() method will return NA and issue a telling warning if the slot
  corpus and registry_dir of the corpus object are not filled #222.
• get_token_stream() will return list of integer values if decode is
  TRUE (#213).
• After applying trim() on a context object using arguments positivelist
  or negativelist, the count slot as reported by length was not updated.
  Fixed. (#220)
• The enrich() method for context objects has a new argument stat for
  creating / updating the data.table in the slot stat.
• Method subset() for subcorpus objects has been debugged to work with
  nested corpora.
• New option polmineR.mdsub configures substitutions that are applied on
  markdown documents to prevent presence of characters that would be
  misinterpreted as formatting instructions. Fixes #166.
• The messages issued by check_cqp_query() now include a hint that argument
  check can be used to omit checking the CQP syntax to prevent false positives.
  Addresses #171.

Bug fixes

• The ability of cooccurrences() (and context()) to process more than one
  p-attribute has been lost temporarily. Fixed. #208.
• Removed a bug for hits() method for partition objects #215.
• After applying trim() on a context object using arguments positivelist
  or negativelist, the count statistics reported in the stat slot were not
  updated. Fixed. (#220)
• Structural attributes do not disappear any more after adding tooltips to a
  kwic object #218.
• Method subset() would not work reliably with argument regex if more than
  one expression is passed #212. Fixed.
• terms() did not work for subcorpus objects. Fixed. #209
• When applying as.speeches() on a subcorpus, the date may have been missing
  from the object names. Fixed. #219
• Fixed an issue that minNchar in the noise() method would work exactly the
  way opposite to the way intended #211.
• The slot registry_dir of a cooccurrences_bundle derived from a
  partition_bundle was not filled, resulting in an error of the show()-method
  for the cooccurrences_bundle. Fixed #222.

Documentation

• The documentation of the cooccurrences() method now includes example code
  for creating a table using DT::datatable() with buttons for exporting tables
  (to Excel, for instance).