Generate Random Points with sf

Uses sf::st_sample() to produce points and spatial joins with input shp. Each engine function takes the same arguments and produces comparable outputs.

Usage

engine_sf_random(shp, col)

Arguments

shp

input shp with sf geometry.

col

character column name to produce points with

Value

tibble with sf geometries

Examples

set.seed(1)
data('suffolk')
engine_sf_random(suffolk[16:20,], 'pop_nhpi')
#> Simple feature collection with 21 features and 21 fields
#> Geometry type: POINT
#> Dimension:     XY
#> Bounding box:  xmin: -7913749 ymin: 5207352 xmax: -7908668 ymax: 5212388
#> Projected CRS: WGS 84 / Pseudo-Mercator
#> # A tibble: 21 × 22
#>    GEOID    NAME    pop pop_white pop_black pop_hisp pop_aian pop_asian pop_nhpi
#>    <chr>    <chr> <dbl>     <dbl>     <dbl>    <dbl>    <dbl>     <dbl>    <dbl>
#>  1 2502500… 0408…  5671      3212       467      572        1      1131       17
#>  2 2502500… 0408…  5671      3212       467      572        1      1131       17
#>  3 2502500… 0408…  5671      3212       467      572        1      1131       17
#>  4 2502500… 0408…  5671      3212       467      572        1      1131       17
#>  5 2502500… 0408…  5671      3212       467      572        1      1131       17
#>  6 2502500… 0408…  5671      3212       467      572        1      1131       17
#>  7 2502500… 0408…  5671      3212       467      572        1      1131       17
#>  8 2502500… 0408…  5671      3212       467      572        1      1131       17
#>  9 2502500… 0408…  5671      3212       467      572        1      1131       17
#> 10 2502500… 0408…  5671      3212       467      572        1      1131       17
#> # ℹ 11 more rows
#> # ℹ 13 more variables: pop_other <dbl>, pop_two <dbl>, vap <dbl>,
#> #   vap_white <dbl>, vap_black <dbl>, vap_hisp <dbl>, vap_aian <dbl>,
#> #   vap_asian <dbl>, vap_nhpi <dbl>, vap_other <dbl>, vap_two <dbl>,
#> #   dots_type <chr>, geometry <POINT [m]>