arc.data: Class "arc.data"
In R-ArcGIS/r-bridge: Bindings for ArcGIS

arc.data

R Documentation

Class "arc.data"

Description

arc.data class and methods

Usage

  
  ## S3 method for class 'arc.data'
x[i, j, drop]

### dplyr methods:
  ## S3 method for class 'arc.data'
filter(.data, ..., .dots)
  ## S3 method for class 'arc.data'
arrange(.data, ..., .dots)
  ## S3 method for class 'arc.data'
mutate(.data, ..., .dots)
  ## S3 method for class 'arc.data'
group_by(.data, ..., add)
  ## S3 method for class 'arc.data'
ungroup(x, ...)

Arguments

`i, j, ...`	indices specifying elements to subset
`drop`	if `TRUE` coerce the result to the lowest possible dimension and remove the geometry attribute
`x`	A `arc.data` object
`.data`	A `arc.data` object
`.dots`	other arguments (see package dplyr)
`add`	To add to the existing groups, use `add = TRUE`

Details

TODO arc.data object is data.frame with geometry attribute. To access geometry use arc.shape.

Extends

Class data.frame, directly.

dplyr methods

filter: Return rows with matching conditions
arrange: Arrange rows by variables
mutate, transmute: Add new variables
select: Select/rename variables by name
group_by: Group by one or more variables
slice: Select rows by position
distinct: Select distinct/unique rows

Note

You can display the arc.data object. Geometry information, first 5 and last 3 row will be showed.

Examples

  d <- arc.select(arc.open(system.file("extdata", "ca_ozone_pts.shp", package="arcgisbinding")))
  d
## Not run: 
geometry type   : Point
WKT             : PROJCS["USA_Contiguous_Albers_Equal_Area_Conic",GEOGCS["GCS_...
WKID            : 102003
    FID LATITUDE LONGITUDE ELEVATION   OZONE        X         Y    text
1     0  39.1447 -123.2065       194 0.04650 -2298092  515557.4 Value_0
2     1  39.4030 -123.3491       420 0.04969 -2301588  546772.7 Value_1
3     2  37.7661 -122.3978         5 0.05000 -2273948  347691.4 Value_2
4     3  37.9508 -122.3569        23 0.05799 -2264847  366623.2 Value_3
5     4  36.6986 -121.6354        36 0.05860 -2241776  214412.1 Value_0
... ...      ...       ...       ...     ...      ...       ...     ...
191 190  34.0598 -117.1462         0 0.16449 -1921585 -170440.0 Value_2
192 191  34.2412 -117.2756      1384 0.16470 -1928645 -148045.5 Value_3
193 192  34.1065 -117.2732         0 0.17360 -1931774 -162775.2 Value_0

## End(Not run)

# subset rows 1,3 and 5 with corresponding features
d135 <- d[c(1,3,5),]



# dplyr support
require("dplyr")
filter(d, ELEVATION > 1800)

#add new elevation column in meters
mutate(d, elevm = ELEVATION * 0.3048)

R-ArcGIS/r-bridge documentation built on April 29, 2023, 6:19 p.m.