inv_project

<code>inv_project()</code> transforms geospatial x/y coordinates to
longitude/latitude in the same geographic coordinate system used by the
given projected spatial reference system. The output long/lat can
optionally be set to a specific geographic coordinate system by specifying
a well known name (see Details).

Interface to the Raster API of the 'Geospatial Data Abstraction
Library' ('GDAL', <https://gdal.org>). Bindings are implemented in an
exposed C++ class encapsulating a 'GDALDataset' and its raster band
objects, along with several stand-alone functions. These support manual
creation of uninitialized datasets, creation from existing raster as
template, read/set dataset parameters, low level I/O, color tables, raster
attribute tables, virtual raster (VRT), and 'gdalwarp' wrapper for
reprojection and mosaicing. Includes 'GDAL' algorithms ('dem_proc()',
'polygonize()', 'rasterize()', etc.), and functions for coordinate
transformation and spatial reference systems. Calling signatures resemble
the native C, C++ and Python APIs provided by the 'GDAL' project. Includes
raster 'calc()' to evaluate a given R expression on a layer or stack of
layers, with pixel x/y available as variables in the expression; and raster
'combine()' to identify and count unique pixel combinations across multiple
input layers, with optional output of the pixel-level combination IDs.
Provides raster display using base 'graphics'. Bindings to a subset of the
'OGR' API are also included for managing vector data sources. Bindings to a
subset of the Virtual Systems Interface ('VSI') are also included to support
operations on 'GDAL' virtual file systems. These are general utility
functions that abstract file system operations on URLs, cloud storage
services, 'Zip'/'GZip'/'7z'/'RAR' archives, and in-memory files.
'gdalraster' may be useful in applications that need scalable, low-level
I/O, or prefer a direct 'GDAL' API.

Chris Toney

gdalraster

Bindings to the 'Geospatial Data Abstraction Library' Raster API

Michael D. Sumner

Frank Warmerdam

Even Rouault

Marius Appel

Daniel James

Peter Dimov

inv_project function

<dl><dt>pts</dt>
<dd>A two-column data frame or numeric matrix containing geospatial
x/y coordinates.</dd>
<dt>srs</dt>
<dd>Character string specifying the projected spatial reference
system for <code>pts</code>. May be in WKT format or any of the formats supported by
<code>srs_to_wkt()</code>.</dd>
<dt>well_known_gcs</dt>
<dd>Optional character string containing a supported
well known name of a geographic coordinate system (see Details for
supported values).</dd></dl>

Arguments

Inverse project geospatial x/y coordinates to longitude/latitude — inv_project

<dl>

<dt>pts</dt>
<dd>A two-column data frame or numeric matrix containing geospatial
x/y coordinates.</dd>


<dt>srs</dt>
<dd>Character string specifying the projected spatial reference
system for <code>pts</code>. May be in WKT format or any of the formats supported by
<code>srs_to_wkt()</code>.</dd>


<dt>well_known_gcs</dt>
<dd>Optional character string containing a supported
well known name of a geographic coordinate system (see Details for
supported values).</dd>

</dl>

EPSG:n	where n is the code of a geographic coordinate system
WGS84	same as EPSG:4326
WGS72	same as EPSG:4322
NAD83	same as EPSG:4269
NAD27	same as EPSG:4267
CRS84	same as WGS84
CRS72	same as WGS72
CRS27	same as NAD27

inv_project: Inverse project geospatial x/y coordinates to longitude/latitude

Description

Usage

Value

Arguments

Details

See Also

Examples