open_help: Access the QGIS/GRASS online help for a specific (Q)GIS...

In RQGIS: Integrating R with QGIS

Description

open_help opens the online help for a specific (Q)GIS geoalgorithm. This is the online help one also encounters in the QGIS GUI. In the case of GRASS algorithms this is actually the GRASS online documentation.

Usage

open_help(alg = "", qgis_env = set_env())

Arguments

alg	The name of the algorithm for which one wishes to retrieve arguments and default values.
qgis_env	Environment containing all the paths to run the QGIS API. For more information, refer to set_env().

Details

Bar a few exceptions open_help works for all QGIS, GRASS and SAGA geoalgorithms. The online help of other third-party providers, however, has not been tested so far.

Value

The function opens the default web browser, and displays the help for the specified algorithm.

Note

Please note that open_help requires a working Internet connection.

Author(s)

Jannes Muenchow, Victor Olaya, QGIS core team

Examples

## Not run: 
# QGIS example
open_help(alg = "qgis:addfieldtoattributestable")
# GRASS example
open_help(alg = "grass:v.overlay")

## End(Not run)

RQGIS documentation built on May 2, 2019, 8:23 a.m.