Skip to contents

Edit Features in a Shapefile

Source: R/utils_shapefile.R
shapefile_edit.Rd

This function allows you to interactively edit features in a shapefile using the mapedit package.

Usage

shapefile_edit(
  shapefile,
  mosaic = NULL,
  basemap = NULL,
  r = 3,
  g = 2,
  b = 1,
  max_pixels = 3e+06
)

Arguments

shapefile

A shapefile (sf object) that can be created with shapefile_input().

mosaic

Optionally, a mosaic (SpatRaster) to be displayed as a background.

basemap

An optional mapview object.

r

Red band index for RGB display (default is 3).

g

Green band index for RGB display (default is 2).

b

Blue band index for RGB display (default is 1).

max_pixels

Maximum number of pixels for down-sampling the mosaic (default is 3e6).

Value

A modified shapefile with user-edited features.

Examples

if (interactive() && requireNamespace("EBImage")) {
library(pliman)
shp <- shapefile_input(system.file("ex/lux.shp", package="terra"))
edited <- shapefile_edit(shp)
}
#>  class       : SpatVector 
#>  geometry    : polygons 
#>  dimensions  : 12, 6  (geometries, attributes)
#>  extent      : 5.74414, 6.528252, 49.44781, 50.18162  (xmin, xmax, ymin, ymax)
#>  source      : lux.shp
#>  coord. ref. : lon/lat WGS 84 (EPSG:4326) 
#>  names       :  ID_1   NAME_1  ID_2   NAME_2  AREA   POP
#>  type        : <num>    <chr> <num>    <chr> <num> <int>
#>  values      :     1 Diekirch     1 Clervaux   312 18081
#>                    1 Diekirch     2 Diekirch   218 32543
#>                    1 Diekirch     3  Redange   259 18664
#> 
#> Listening on http://127.0.0.1:6534
#> Warning: `select_()` was deprecated in dplyr 0.7.0.
#> ℹ Please use `select()` instead.
#> ℹ The deprecated feature was likely used in the mapedit package.
#>   Please report the issue at <https://github.com/r-spatial/mapedit/issues>.