gt_translate: Translate geometric objects

In geometr: Generate and Modify Interoperable Geometric Shapes

Description

Translate geometric objects by adding a constant in x and y dimension.

Usage

gt_translate(obj, x = NULL, y = NULL, fid = NULL, update = TRUE)

Arguments

obj	[geometric object(1)] the object to translate.
x	[numeric(1)] the translation constant (offset) in x dimension.
y	[numeric(1)] the translation constant (offset) in y dimension.
fid	[integerish(.)] in case only a subset of features shall be translated, specify that here.
update	[logical(1)] whether or not to update the window slot after translation.

Value

geom of the mathematically translated obj.

See Also

Other geometry tools: gt_filter(), gt_locate(), gt_pull(), gt_reflect(), gt_rotate(), gt_scale(), gt_skew(), gt_stretch()

Examples

# translate several features
visualise(gtGeoms$polygon, linewidth = 3)
newPoly <- gt_translate(obj = gtGeoms$polygon, x = 5, y = c(-10, 5),
                        update = FALSE)
visualise(geom = newPoly, linecol = "green", new = FALSE)

# translate a single feature
visualise(gtGeoms$polygon, linewidth = 3)
newPoly <- gt_translate(obj = gtGeoms$polygon, x = 5, fid = 2,
                        update = FALSE)
visualise(geom = newPoly, linecol = "green", new = FALSE)

geometr documentation built on Sept. 21, 2021, 1:07 a.m.