CRAN Package Check Results for Package tm

Last updated on 2023-12-07 04:56:40 CET.

Flavor Version Tinstall Tcheck Ttotal Status Flags
r-devel-linux-x86_64-debian-clang 0.7-11 35.72 69.00 104.72 NOTE
r-devel-linux-x86_64-debian-gcc 0.7-11 25.72 57.14 82.86 NOTE
r-devel-linux-x86_64-fedora-clang 0.7-11 145.02 NOTE
r-devel-linux-x86_64-fedora-gcc 0.7-11 150.60 NOTE
r-devel-windows-x86_64 0.7-11 32.00 137.00 169.00 NOTE
r-patched-linux-x86_64 0.7-11 34.71 67.04 101.75 NOTE
r-release-linux-x86_64 0.7-11 31.51 60.66 92.17 NOTE
r-release-macos-arm64 0.7-11 50.00 NOTE
r-release-macos-x86_64 0.7-11 96.00 NOTE
r-release-windows-x86_64 0.7-11 39.00 144.00 183.00 NOTE
r-oldrel-macos-arm64 0.7-11 47.00 NOTE
r-oldrel-macos-x86_64 0.7-11 83.00 ERROR
r-oldrel-windows-x86_64 0.7-11 36.00 136.00 172.00 NOTE

Check Details

Version: 0.7-11
Check: package dependencies
Result: NOTE Packages suggested but not available for checking: 'Rcampdf', 'tm.lexicon.GeneralInquirer' Flavors: r-devel-linux-x86_64-debian-clang, r-devel-linux-x86_64-debian-gcc, r-devel-linux-x86_64-fedora-clang, r-devel-linux-x86_64-fedora-gcc, r-patched-linux-x86_64, r-release-linux-x86_64, r-release-macos-arm64, r-oldrel-macos-arm64, r-oldrel-macos-x86_64

Version: 0.7-11
Check: Rd cross-references
Result: NOTE Undeclared packages ‘tm.plugin.dc’, ‘readtext’, ‘graph’, ‘tau’, ‘tokenizers’ in Rd xrefs Flavor: r-devel-linux-x86_64-fedora-clang

Version: 0.7-11
Check: package dependencies
Result: NOTE Packages suggested but not available for checking: 'Rcampdf', 'Rpoppler', 'tm.lexicon.GeneralInquirer' Flavors: r-devel-windows-x86_64, r-release-macos-x86_64, r-release-windows-x86_64, r-oldrel-windows-x86_64

Version: 0.7-11
Check: Rd cross-references
Result: NOTE Package unavailable to check Rd xrefs: ‘Rpoppler’ Flavor: r-release-macos-x86_64

Version: 0.7-11
Check: examples
Result: ERROR Running examples in ‘tm-Ex.R’ failed The error most likely occurred in: > ### Name: readPDF > ### Title: Read In a PDF Document > ### Aliases: readPDF > ### Keywords: file > > ### ** Examples > > uri <- paste0("file://", + system.file(file.path("doc", "tm.pdf"), package = "tm")) > engine <- if(nzchar(system.file(package = "pdftools"))) { + "pdftools" + } else { + "ghostscript" + } > reader <- readPDF(engine) > pdf <- reader(elem = list(uri = uri), language = "en", id = "id1") > cat(content(pdf)[1]) Introduction to the tm Package Text Mining in R Ingo Feinerer February 5, 2023 Introduction This vignette gives a short introduction to text mining in R utilizing the text mining framework provided by the tm package. We present methods for data import, corpus handling, preprocessing, metadata management, and creation of term-document matrices. Our focus is on the main aspects of getting started with text mining in R—an in-depth description of the text mining infrastructure offered by tm was published in the Journal of Statistical Software (Feinerer et al., 2008). An introductory article on text mining in R was published in R News (Feinerer, 2008). Data Import The main structure for managing documents in tm is a so-called Corpus, representing a collection of text documents. A corpus is an abstract concept, and there can exist several implementations in parallel. The default implementation is the so-called VCorpus (short for Volatile Corpus) which realizes a semantics as known from most R objects: corpora are R objects held fully in memory. We denote this as volatile since once the R object is destroyed, the whole corpus is gone. Such a volatile corpus can be created via the constructor VCorpus(x, readerControl). Another implementation is the PCorpus which implements a Permanent Corpus semantics, i.e., the documents are physically stored outside of R (e.g., in a database), corresponding R objects are basically only pointers to external structures, and changes to the underlying corpus are reflected to all R objects associated with it. Compared to the volatile corpus the corpus encapsulated by a permanent corpus object is not destroyed if the corresponding R object is released. Within the corpus constructor, x must be a Source object which abstracts the input location. tm provides a set of predefined sources, e.g., DirSource, VectorSource, or DataframeSource, which handle a directory, a vector interpreting each component as document, or data frame like structures (like CSV files), respectively. Except DirSource, which is designed solely for directories on a file system, and VectorSource, which only accepts (char- acter) vectors, most other implemented sources can take connections as input (a character string is interpreted as file path). getSources() lists available sources, and users can create their own sources. The second argument readerControl of the corpus constructor has to be a list with the named components reader and language. The first component reader constructs a text document from elements delivered by a source. The tm package ships with several readers (e.g., readPlain(), readPDF(), readDOC(), . . . ). See getReaders() for an up-to-date list of available readers. Each source has a default reader which can be overridden. E.g., for DirSource the default just reads in the input files and interprets their content as text. Finally, the second component language sets the texts’ language (preferably using ISO 639-2 codes). In case of a permanent corpus, a third argument dbControl has to be a list with the named components dbName giving the filename holding the sourced out objects (i.e., the database), and dbType holding a valid database type as supported by package filehash. Activated database support reduces the memory demand, however, access gets slower since each operation is limited by the hard disk’s read and write capabilities. So e.g., plain text files in the directory txt containing Latin (lat) texts by the Roman poet Ovid can be read in with following code: > txt <- system.file("texts", "txt", package = "tm") > (ovid <- VCorpus(DirSource(txt, encoding = "UTF-8"), + readerControl = list(language = "lat"))) <<VCorpus>> Metadata: corpus specific: 0, document level (indexed): 0 Content: documents: 5 1 > VCorpus(URISource(uri, mode = ""), + readerControl = list(reader = readPDF(engine = "ghostscript"))) sh: : command not found Error in system2(gs_cmd, c("-dNODISPLAY -q", sprintf("-sFile=%s", shQuote(file)), : error in running command Calls: VCorpus ... mapply -> <Anonymous> -> <Anonymous> -> pdf_info -> system2 Execution halted Flavor: r-oldrel-macos-x86_64