wk_writer: Write geometry vectors

In wk: Lightweight Well-Known Geometry Parsing

Write geometry vectors

Description

When writing transformation functions, it is often useful to know which handler should be used to create a (potentially modified) version of an object. Some transformers (e.g., wk_vertices()) modify the geometry type of an object, in which case a generic writer is needed. This defaults to wkb_writer() because it is fast and can handle all geometry types.

Usage

## S3 method for class 'sfc'
wk_writer(handleable, ...)

## S3 method for class 'sf'
wk_writer(handleable, ...)

sfc_writer(promote_multi = FALSE)

wkb_writer(buffer_size = 2048L, endian = NA_integer_)

wkt_writer(precision = 16L, trim = TRUE)

wk_writer(handleable, ..., generic = FALSE)

## Default S3 method:
wk_writer(handleable, ...)

## S3 method for class 'wk_wkt'
wk_writer(handleable, ..., precision = 16, trim = TRUE)

## S3 method for class 'wk_wkb'
wk_writer(handleable, ...)

## S3 method for class 'wk_xy'
wk_writer(handleable, ..., generic = FALSE)

xy_writer()

Arguments

handleable	A geometry vector (e.g., wkb(), wkt(), xy(), rct(), or sf::st_sfc()) for which wk_handle() is defined.
...	Passed to the writer constructor.
promote_multi	Use TRUE to promote all simple geometries to a multi type when reading to sfc. This is useful to increase the likelihood that the sfc will contain a single geometry type.
buffer_size	Control the initial buffer size used when writing WKB.
endian	Use 1 for little endian, 0 for big endian, or NA for system endian.
precision	If trim is TRUE, the total number of significant digits to keep for each result or the number of digits after the decimal place otherwise.
trim	Use FALSE to keep trailing zeroes after the decimal place.
generic	Use TRUE to obtain a writer that can write all geometry types.

Value

A wk_handler.

wk documentation built on Oct. 22, 2023, 9:07 a.m.