Functions to be used internally, only by developers and contributors.
ascii: Convert accented unicode characters to pure ascii
changeXMLang: Remove the xmlang attribute from all elements.
checkArgument: Check function arguments
checkDots: Check the three dots ... argument.
If the argument is not supplied via dots, returns a default
checkElement: Check if an element is a DDI Codebook element
checkExisting: Check if a certain (sub)element exists in a DDI Codebook.
checkType: Determine the variable type: categorical, numerical or mixed
checkXMList: Determine if an XML list is a DDI Codebook
cleanup: Rectify texts read from a metadata object
coerceDDI: Recursive coerce an element to a DDI class
collectMetadata: Collect metadata from a file or a dataframe object
collectRMetadata: Collect metadata from a dataframe object
extractData: Extract data from an DDI Codebook XML document or
list.
formatExample: Format an example from the DDI Codebook
specification
generateID: Generate simple, custom unique ID codes
getDateTime: Current date and time
getDelimiter: Guess the column delimiter from a text file
getDNS: Extracts the Default Name Space from an XML object
getEnter: Get the carriage return code from the current Operating System
getFiles: Get information about the files in a given directory
getFormat: Determine the SPSS / Stata variable format
getHashes: Compute hashes of XML nodes
getValues: Extract values, labels and missing values from a var element
getXML: Read the DDI XML file, testing if it can be loaded.
hasLabels: Check if a dataset has (declared) labels
hasMissingLabels: Check if variables have missing labels
makeLabelled: Coerce variables to labelled objects
missingValuesSPSS: Prepares the missing values for the SPSS export syntax.
prespace: Prepend a text with a certain number of space characters.
removeExtra: Removes extra information from a DDI Codebook element
repeatSpace: Allows indentation of XML or HTML files
replaceChars: Replace certain characters, in preparation for XML export
replaceTicks: Recode all tick characters with a single quote.
splitrows: Split the written rows in the setup file.
treatPath: Determine which specific type of files are
present in a certain directory.
writeMetadata: Utility function to write the metadata
part in the setup file.
XMLtoRmetadata: Extract metadata from a single XML variable
writeRlist: Write an .R file containing a metadata specific list.
ascii(x)changeXMLang(x, remove = FALSE)
checkArgument(argument, default, length = 1, ...)
checkDots(dotsvalue, default, length = 1)
checkElement(x)
checkExisting(xpath, inside, attribute = NULL)
checkType(x, labels = NULL, na_values = NULL, na_range = NULL)
checkXMList(xmlist)
cleanup(x, cdata = TRUE)
coerceDDI(element, name = NULL)
collectMetadata(from, ...)
collectRMetadata(from, ...)
extractData(xml)
formatExample(xml_node, level = 0, indent = 2, output = NULL, ...)
generateID(x, nchars = 16)
getDateTime()
getDelimiter(x)
getDNS(xml)
getEnter(OS)
getFiles(path = ".", type = "*", currdir)
getFormat(x, type = c("SPSS", "Stata"), ...)
getHashes(nodes)
getValues(variable)
getXML(path, encoding = "UTF-8")
hasLabels(x)
hasMissingLabels(variables)
makeLabelled(x, variables, declared = TRUE)
missingValuesSPSS(variables, range = FALSE, numvars = TRUE)
prespace(text, indent = NULL)
removeExtra(element)
repeatSpace(times, indent)
replaceChars(x)
replaceTicks(x)
splitrows(x, enter, y = 80, spacerep = "")
treatPath(path, type = "*", single = FALSE, check = TRUE)
writeMetadata(variables, OS = "", indent = 4)
XMLtoRmetadata(xmlvar, dns)
makeNotes(data)
getMetadata(...)
exportDDI(...)
writeRlist(variables, OS = "windows", indent = 4, dirpath = "", filename = "")
changeXMLang: A modified codeBook element.
checkElement: Boolean.
checkExisting: Boolean.
checkType: A character scalar
cleanup: A character vector
coerceDDI: A standard element of class DDI
collectMetadata: a standard DDI Codebook element dataDscr,
containing variable level metadata information
collectRMetadata: an R list containing variable level metadata information
extractData: An R data frame, if existing, or NULL
generateID: Character vector
getDateTime: Character vector
getDelimiter: Character scalar
getDNS: Character scalar
getEnter: Character scalar
getFiles: A list with four components: the complete path, the files, the file names and the file extensions
getFormat: Character scalar
getHashes: Character vector
getValues: A list with two components: labels and na_values
getXML: An XML document
hasLabels: Boolean
hasMissingLabels: Boolean vector
makeLabelled: A modified data frame.
missingValuesSPSS: A vector of missing values representation.
prespace: A modified text.
removeExtra: A modified element.
repeatSpace: Character spaces
replaceChars: Character vector
replaceTicks: A recoded string.
splitrows: A character vector.
treatPath: A list with four components: the complete path, the
files, the file names and the file extensions
XMLtoRmetadata: An R list containing metadata
Number of ID values to return
Number of characters for each ID