R: Modify a tree by inserting, replacing or removing nodes

xml_replace {xml2} | R Documentation

## Modify a tree by inserting, replacing or removing nodes

### Description

`xml_add_sibling()` and `xml_add_child()` are used to insert a node as a sibling or a child. `xml_add_parent()` adds a new parent in between the input node and the current parent. `xml_replace()` replaces an existing node with a new node. `xml_remove()` removes a node from the tree.

### Usage

    xml_replace(.x, .value, ..., .copy = TRUE)

    xml_add_sibling(.x, .value, ..., .where = c("after", "before"), .copy = TRUE)

    xml_add_child(.x, .value, ..., .where = length(xml_children(.x)), .copy = TRUE)

    xml_add_parent(.x, .value, ...)

    xml_remove(.x, free = FALSE)

### Arguments

`.x` | a document, node or nodeset.
`.value` | node to insert.
`...` | If named attributes or namespaces to set on the node, if unnamed text to assign to the node.
`.copy` | whether to copy the `.value` before replacing. If this is `FALSE` then the node will be moved from it's current location.
`.where` | to add the new node, for `xml_add_child` the position after which to add, use `0` for the first child. For `xml_add_sibling` either ‘"before"’ or ‘"after"’ indicating if the new node should be before or after `.x`.
`free` | When removing the node also free the memory used for that node. Note if you use this option you cannot use any existing objects pointing to the node or its children, it is likely to crash R or return garbage.

### Details

Care needs to be taken when using `xml_remove()`,

[Package xml2 version 1.3.0 Index]