rgdal: wrappers – R documentation

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wrappers

Wrapper functions to allow more direct calling of rgdal C code

Description

These functions allow more direct access to some of the rgdal C API. These are advanced methods intended for package developers only.

Usage

GDALcall(object, option, ...)
rawTransform(projfrom, projto, n, x, y, z=NULL, wkt=FALSE)

Arguments

`object`	GDALTransientDataset (option = 'SetGeoTransform', 'SetProject') or GDALRasterBand (the other options)
`option`	character. One of 'SetGeoTransform', 'SetProject', 'SetNoDataValue', 'SetStatistics', 'SetRasterColorTable' or 'SetCategoryNames')
`...`	additional arguments. The values to be set
`projfrom`	character. PROJ.4 coordinate reference system (CRS) description
`projto`	character. PROJ.4 CRS description
`n`	number of coordinates
`x`	x coordinates
`y`	y coordinates
`z`	z coordinates
`wkt`	default FALSE, if TRUE, the caller determines that projfrom and projto are wkt and that new_proj_and_gdal() returns TRUE to avoid multiple warnings when the function is called repetitively

Value

GDALcall does not return anything. rawTransform returns a matrix of transformed coordinates.

Author(s)

Robert Hijmans

rgdal

Bindings for the 'Geospatial' Data Abstraction Library

v1.5-23

GPL (>= 2)

Authors

Roger Bivand [cre, aut] (<https://orcid.org/0000-0003-2392-6140>), Tim Keitt [aut], Barry Rowlingson [aut, ctb], Edzer Pebesma [ctb], Michael Sumner [ctb], Robert Hijmans [ctb], Daniel Baston [ctb], Even Rouault [cph, ctb], Frank Warmerdam [cph, ctb], Jeroen Ooms [ctb], Colin Rundel [ctb]

Initial release

2021-02-03