XML: xmlApply – R documentation

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xmlApply

Applies a function to each of the children of an XMLNode

Description

These methods are simple wrappers for the lapply and sapply functions. They operate on the sub-nodes of the XML node, and not on the fields of the node object itself.

Usage

xmlApply(X, FUN, ...)
## S3 method for class 'XMLNode'
xmlApply(X, FUN, ...)
## S3 method for class 'XMLDocument'
xmlApply(X, FUN, ...)
## S3 method for class 'XMLDocumentContent'
xmlApply(X, FUN, ...)
xmlSApply(X, FUN, ...)
## S3 method for class 'XMLNode'
xmlSApply(X, FUN, ...)
## S3 method for class 'XMLDocument'
xmlSApply(X, FUN, ...)

Arguments

`X`	the `XMLNode` on whose children the regular `apply` or `sapply` is to be performed
`FUN`	the function to apply to each child node. This is passed directly to the relevant `apply` function.
`...`	additional arguments to be given to each invocation of `FUN`. This is passed directly to the relevant `apply` function.

Value

The result is that obtained from calling the apply or sapply on xmlChildren(x).

Author(s)

Duncan Temple Lang

References

http://www.w3.org/XML//, http://www.jclark.com/xml/, http://www.omegahat.net

Examples

doc <- xmlTreeParse(system.file("exampleData", "mtcars.xml", package="XML"))
 r <- xmlRoot(doc)
 xmlSApply(r[[2]], xmlName)

 xmlApply(r[[2]], xmlAttrs)

 xmlSApply(r[[2]], xmlSize)

XML

Tools for Parsing and Generating XML Within R and S-Plus

v3.99-0.10

BSD_3_clause + file LICENSE

Authors

CRAN Team [ctb, cre] (de facto maintainer since 2013), Duncan Temple Lang [aut] (<https://orcid.org/0000-0003-0159-1546>), Tomas Kalibera [ctb]

Initial release