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Navigate the NBS data-portal folder tree

china_tree_node.Rd

The NBS data portal organizes its data series in a tree of "nodes" (folders and leaves). This function queries one level of that tree given a parent node id, and is the building block used to locate specific indicators (e.g. CPI) by walking down from the root.

Usage

china_tree_node(parent_id = NULL, code = 19)

Arguments

parent_id

Character. The id of the parent node to list children for. Use NULL (the default) to fetch the root of the tree.

code

Integer/character. Which panel of the site to query: 1 = "Browse topics" / "advanced search" panel, 19 = "Visualized" panel (the default). During development, code = 19 was the panel that reliably contained the Price Index section, but this is not guaranteed to remain stable if the site changes.

Value

A tibble with (when available) columns level, parent_id, id, name, and dt – one row per child node. Returns a 0-row tibble if the node has no children.

Examples

if (FALSE) { # \dontrun{
root <- china_tree_node()
sections <- china_tree_node(root$id)
} # }