projpar: Return a parameter used in a WRT projection

In pobsteta/theia2r: An R toolbox to find, download and preprocess Sentinel-2 data

Description

Return the value of a parameter (or the name) present in the WKT of the given proj4string.

Usage

projpar(proj4string, par, abort = FALSE)

projname(proj4string, abort = FALSE)

Arguments

proj4string	The proj4string to be named (a character or a CRS object).
par	Character corresponding to the parameter name.
abort	logical: if TRUE, the function aborts in case an invalid proj4string is passed; if FALSE (default), the function returns NA, and a warning is shown.

Value

A character with the content of the parameter (NULL if the parameter is not recognised) or the name of the projection, and an attribute proj4string with the input projection checked using sf::st_crs().

Note

Python is needed.

Author(s)

Luigi Ranghetti, phD (2017) [e-mail]

Examples

## Not run: 
projpar("+init=epsg:4326", "Unit")

## End(Not run)
## Not run: 
projname("+init=epsg:4326")

## End(Not run)

pobsteta/theia2r documentation built on May 25, 2019, 2:21 p.m.