geo_skew: Skew geometric objects

In EhrmannS/geometr: Generate and Modify Interoperable Geometric Objects

Skew geometric objects

Description

Skew geometric objects by a shear factor in x and y dimension.

Usage

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

Arguments

obj	gridded(1) the object to skew.
x	numeric(1) the shear factor in x dimension.
y	numeric(1) the shear factor in y dimension.
fid	integerish(.) in case only a subset of features shall be skewed, specify that here.
update	logical(1) whether or not to update the window slot after skewing.

Value

geom of the skewed obj.

See Also

Other geometry tools: geo_filter(), geo_locate(), geo_pull(), geo_reflect(), geo_rotate(), geo_scale(), geo_stretch(), geo_translate()

Examples

# skew several features
geo_vis(gtGeoms$polygon, linewidth = 3)
newPoly <- geo_skew(obj = gtGeoms$polygon, x = 0.5, update = FALSE)
geo_vis(geom = newPoly, linecol = "green", new = FALSE)

# skew a single feature
geo_vis(gtGeoms$polygon, linewidth = 3)
newPoly <- geo_skew(obj = gtGeoms$polygon, x = 0.5, y = .7, fid = 2,
                   update = FALSE)
geo_vis(newPoly, linecol = "green", new = FALSE)

EhrmannS/geometr documentation built on Jan. 31, 2024, 9:13 a.m.