crs_engine_proj_cmd: PROJ command-line transformation engine
In paleolimbot/crs2crs: Generic Coordinate System Transforms

Description Usage Arguments Value Examples

View source: R/engine-proj-cmd.R

PROJ command-line transformation engine

crs_engine_proj_cmd(
  projinfo = getOption("crs2crs.projinfo", "projinfo"),
  cct = getOption("crs2crs.cct", "cct"),
  spatial_test = "intersects",
  env = NULL,
  quiet = FALSE
)

crs_has_default_proj_cmd()

## S3 method for class 'crs2crs_engine_proj_cmd'
crs_engine_proj_pipeline(
  engine,
  handleable,
  crs_to,
  crs_from = wk::wk_crs(handleable),
  bbox = wk::wk_bbox(handleable),
  extra_args = character(),
  ...
)

## S3 method for class 'crs2crs_engine_proj_cmd'
crs_engine_proj_pipeline_apply(engine, handleable, pipeline, ...)

## S3 method for class 'crs2crs_engine_proj_cmd'
crs_engine_transform(
  engine,
  handleable,
  crs_to,
  crs_from = wk::wk_crs(handleable),
  ...
)

## S3 method for class 'crs2crs_engine_proj_cmd'
crs_engine_get_wk_trans(engine, handleable, crs_to, crs_from, ...)

`projinfo`	Path to the projinfo executable
`cct`	Path to the cct executable
`spatial_test`	Use "none" to skip querying coordinate operations based on `bbox`. Use "contains" to include only operations that completely contain `handleable`, or "intersects" for.
`env`	A list of environment variables to be applied during calls to projinfo and proj
`quiet`	Use `TRUE` to suppress output.
`engine`	A transform engine such as `crs_engine_null()`
`handleable`	A geometry vector (e.g., `wkb()`, `wkt()`, `xy()`, `rct()`, or `sf::st_sfc()`) for which `wk_handle()` is defined.
`crs_to`	Source and destination coordinate reference systems
`crs_from`	Source and destination coordinate reference systems
`bbox`	The optional bounding box of the object. Defaults to `wk::wk_bbox()` of `handleable` forced to `crs_from`. Use `NULL` to skip bounding box selectio for a single transformation.
`extra_args`	Extra args to pass to `projinfo` (e.g., to use specific areas or grid options)
`...`	engine-specific transformation options
`pipeline`	A PROJ coordinate transformation pipeline definition

crs_engine_proj_cmd() returns an engine that uses command-line PROJ utilities to transform coordinates
crs_has_default_proj_cmd(): TRUE if the default arguments for this engine can transform coordinates
crs_engine_proj_cmd_trans(): Returns a modified version of coords after running cct

if (crs_has_default_proj_cmd()) {
  engine <- crs_engine_proj_cmd()
  crs_transform(
    wk::xy(-64, 45, crs = "OGC:CRS84"), "EPSG:3857",
    engine = engine
  )
}