subset.osmar: Subset an osmar object

In osmar: OpenStreetMap and R

Description

Subset an osmar object

Usage

  ## S3 method for class 'osmar'
 subset(x, node_ids = NULL,
    way_ids = NULL, relation_ids = NULL,
    ids = list(node_ids = node_ids, way_ids = way_ids, relation_ids = relation_ids),
    ...)

Arguments

x	An osmar object
node_ids	Node ID vector
way_ids	Way ID vector
relation_ids	Relation ID vector
ids	A list composed of node_ids, way_ids, relation_ids; for easier usage with results from find_up and find_down
...	Ignored

Value

An osmar object containing the specified elements

Examples

data("muc", package = "osmar")
  id <- find(muc, node(tags(v == "Marienplatz")))

  subset(muc, node_ids = id)

  subset(muc, ids = find_up(muc, node(id)))

Example output

Loading required package: XML
Loading required package: RCurl
Loading required package: bitops
Loading required package: geosphere

Attaching package: 'osmar'

The following object is masked from 'package:utils':

    find

osmar object
19 nodes, 0 ways, 0 relations 
osmar object
19 nodes, 10 ways, 20 relations 

osmar documentation built on May 1, 2019, 7:33 p.m.