Structural annotations (s-attributes) of a corpus capture metainformation for
regions of tokens. The s_attributes-method offers high-level access to
the s-attributes present in a corpus or subcorpus, or the values of
s-attributes in a corpus/partition.
s_attributes(.Object, ...) # S4 method for character s_attributes(.Object, s_attribute = NULL, unique = TRUE, regex = NULL, ...) # S4 method for corpus s_attributes(.Object, s_attribute = NULL, unique = TRUE, regex = NULL, ...) # S4 method for slice s_attributes(.Object, s_attribute = NULL, unique = TRUE, ...) # S4 method for partition s_attributes(.Object, s_attribute = NULL, unique = TRUE, ...) # S4 method for subcorpus s_attributes(.Object, s_attribute = NULL, unique = TRUE, ...) # S4 method for call s_attributes(.Object, corpus) # S4 method for remote_corpus s_attributes(.Object, ...) # S4 method for remote_partition s_attributes(.Object, ...)
| .Object | A |
|---|---|
| ... | To maintain backward compatibility, if argument |
| s_attribute | The name of a specific s-attribute. |
| unique | A |
| regex | A regular expression passed into |
| corpus | A |
A character vector (s-attributes, or values of s-attributes).
Importing XML into the Corpus Workbench (CWB) turns elements and element
attributes into so-called "s-attributes". There are two basic uses of the
s_attributes-method: If the argument s_attribute is NULL
(default), the return value is a character vector with all
s-attributes present in a corpus.
If s_attribute is the name of a specific s-attribute (a length-one
character vector), the values of the s-attributes available in the
corpus/partition are returned.
If argument unique is FALSE, the full sequence of the
s_attributes is returned, which is a useful building block for decoding a
corpus.
If argument s_attributes is a character providing several s-attributes, the method
will return a data.table. If unique is TRUE, all unique
combinations of the s-attributes will be reported by the data.table.
If .Object is a call, the s_attributes-method will
return a character vector with the s-attributes occurring in the call. This
usage is relevant internally to implement the subset method to
generate a subcorpus using non-standard evaluation. Usually it will
not be relevant in an interactive session.
#>#>s_attributes("GERMAPARLMINI")#> [1] "interjection" "date" "party" "speaker"s_attributes("GERMAPARLMINI", "date") # dates of plenary meetings#> [1] "2009-10-27" "2009-10-28" "2009-11-10" "2009-11-11" "2009-11-12"#> date party #> 1: 2009-10-27 NA #> 2: 2009-10-27 CDU_CSU #> 3: 2009-10-27 SPD #> 4: 2009-10-27 FDP #> 5: 2009-10-27 DIE_LINKE #> 6: 2009-10-27 B90_DIE_GRUENEN #> 7: 2009-10-28 NA #> 8: 2009-10-28 CDU_CSU #> 9: 2009-10-28 FDP #> 10: 2009-11-10 NA #> 11: 2009-11-10 CDU_CSU #> 12: 2009-11-10 SPD #> 13: 2009-11-10 FDP #> 14: 2009-11-10 DIE_LINKE #> 15: 2009-11-10 B90_DIE_GRUENEN #> 16: 2009-11-11 NA #> 17: 2009-11-11 FDP #> 18: 2009-11-11 SPD #> 19: 2009-11-11 CDU_CSU #> 20: 2009-11-11 DIE_LINKE #> 21: 2009-11-11 B90_DIE_GRUENEN #> 22: 2009-11-12 NA #> 23: 2009-11-12 FDP #> 24: 2009-11-12 SPD #> 25: 2009-11-12 CDU_CSU #> 26: 2009-11-12 B90_DIE_GRUENEN #> 27: 2009-11-12 DIE_LINKE #> date party#> [1] "interjection" "date" "party" "speaker"#>#>s_attributes(p)#> [1] "interjection" "date" "party" "speaker"s_attributes(p, "speaker") # get names of speakers#> [1] "Norbert Lammert" "Angela Dorothea Merkel" #> [3] "Frank-Walter Steinmeier" "Birgit Homburger" #> [5] "Wolfgang Thierse" "Oskar Lafontaine" #> [7] "Jürgen Trittin" "Volker Kauder" #> [9] "Joachim Poß" "Hans-Peter Friedrich" #> [11] "Agnes Krumwiede" "Gerda Hasselfeldt" #> [13] "Arnold Vaatz" "Guido Westerwelle" #> [15] "Gernot Erler" "Andreas Schockenhoff" #> [17] "Jan van Aken" "Frithjof Schmidt" #> [19] "Dirk Niebel" "Sascha Raabe" #> [21] "Angelica Schwall-Düren" "Karl-Theodor zu Guttenberg" #> [23] "Wolfgang Gehrcke" "Omid Nouripour" #> [25] "Petra Pau" "Ilse Aigner" #> [27] "Waltraud Wolff" "Hans-Michael Goldmann" #> [29] "Katrin Göring-Eckardt" "Kirsten Tackmann" #> [31] "Ulrike Höfken" "Peter Bleser" #> [33] "Elvira Drobinski-Weiß" "Christel Happach-Kasan" #> [35] "Caren Lay" "Johannes Röring" #> [37] "Wilhelm Priesmeier"# Get s-attributes occurring in a call s_attributes(quote(grep("Merkel", speaker)), corpus = "GERMAPARLMINI")#> [1] "speaker"#> [1] "speaker"#> [1] "speaker"#> [1] "speaker" "date"