feature class

feature(x)

Arguments

x

input

Details

Feature objects:

  • A feature object must have a member with the name "geometry". The value of the geometry member is a geometry object as defined above or a JSON null value.

  • A feature object must have a member with the name "properties". The value of the properties member is an object (any JSON object or a JSON null value).

  • If a feature has a commonly used identifier, that identifier should be included as a member of the feature object with the name "id".

Examples

# point -> feature x <- '{ "type": "Point", "coordinates": [100.0, 0.0] }' point(x) %>% feature()
#> <Feature> #> type: Point #> coordinates: [100,0]
# multipoint -> feature x <- '{"type": "MultiPoint", "coordinates": [ [100.0, 0.0], [101.0, 1.0] ] }' multipoint(x) %>% feature()
#> <Feature> #> type: MultiPoint #> coordinates: [[100,0],[101,1]]
# linestring -> feature x <- '{ "type": "LineString", "coordinates": [ [100.0, 0.0], [101.0, 1.0] ] }' linestring(x) %>% feature()
#> <Feature> #> type: LineString #> coordinates: [[100,0],[101,1]]
# multilinestring -> feature x <- '{ "type": "MultiLineString", "coordinates": [ [ [100.0, 0.0], [101.0, 1.0] ], [ [102.0, 2.0], [103.0, 3.0] ] ] }' multilinestring(x) %>% feature()
#> <Feature> #> type: MultiLineString #> coordinates: [[[100,0],[101,1]],[[102,2],[103,3]]]
# add to a data.frame library('tibble') tibble(a = 1:5, b = list(multilinestring(x)))
#> # A tibble: 5 x 2 #> a b #> <int> <list> #> 1 1 <gmltlnst [1]> #> 2 2 <gmltlnst [1]> #> 3 3 <gmltlnst [1]> #> 4 4 <gmltlnst [1]> #> 5 5 <gmltlnst [1]>