arc.shapeinfo: Get geometry information

In R-ArcGIS/r-bridge: Bindings for ArcGIS

Get geometry information

Description

arc.shapeinfo provides details on what type of geometry is stored within the dataset, and the spatial reference of the geometry. The well-known text, WKT, allows interoperable transfer of the spatial reference system (CRS) between environments. The WKID is a numeric value that ArcGIS uses to precisely specify a projection.

Usage

  ## S4 method for signature 'arc.shape'
arc.shapeinfo(object)
  ## S4 method for signature 'arc.feature'
arc.shapeinfo(object)

Arguments

object

arc.feature-class or arc.shape-class object

Value

returns named list of :

type	geometry type: "Point", "Polyline", or "Polygon"
hasZ	TRUE if geometry includes Z-values
hasM	TRUE if geometry includes M-values
WKT	well-known text representation of the shape's spatial reference
WKID	well-known ID of the shape's spatial reference

References

1. ArcGIS REST API: Using spatial references

2. Spatial reference lookup

See Also

arc.open, arc.shape

Examples

d <- arc.open(system.file("extdata", "ca_ozone_pts.shp", package="arcgisbinding"))
# from arc.feature
info <- arc.shapeinfo(d)
info$WKT   # print dataset spatial reference

# from arc.shape
df <- arc.select(d, 'ozone')
info <- arc.shapeinfo(arc.shape(df))

R-ArcGIS/r-bridge documentation built on May 3, 2024, 9:47 a.m.