Translate geometries along the x and y axes — ga_translate • geoarrowrs

Shifts every coordinate of each geometry by x_offset and y_offset. The geometry type of the output matches the geometry type of the input.

Usage

ga_translate(geometry, x_offset, y_offset)

Arguments

geometry: a GeoArrow point, linestring, multilinestring, polygon, or multipolygon array
x_offset: distance to shift along the x axis; length 1 or the same length as geometry
y_offset: distance to shift along the y axis; length 1 or the same length as geometry

Value

a GeoArrow array of the same geometry type as the input

References

See also

Other affine: ga_affine_transform(), ga_rotate_around_center(), ga_rotate_around_centroid(), ga_scale_xy(), ga_skew(), ga_skew_xy()

Examples

pts <- ga_xy(c(0, 1), c(0, 1))

# offsets are per row, so each point shifts by its own amount
geoarrow::as_geoarrow_vctr(ga_translate(pts, c(10, 100), c(0, 5)))
#> <geoarrow_vctr geoarrow.point{struct}[2]>
#> [1] <POINT (10 0)>  <POINT (101 6)>