extract-methods: Extraction from a gridlayer using indices

In icosa: Global Triangular and Penta-Hexagonal Grids Based on Tessellated Icosahedra

Extraction from a gridlayer using indices

Description

Shorthand to the subset function.

Function to replace specific elements in a gridlayer object

Usage

## S4 method for signature 'gridlayer,ANY,missing'
x[i]

## S4 method for signature 'gridlayer,SpatExtent,missing'
x[i]

## S4 replacement method for signature 'gridlayer,ANY,ANY'
x[i] <- value

Arguments

x	(facelayer) The object to be subsetted.
i	(logical, numeric or SpatExtent) The subscript vector, or extent, specifying the faces that are used for subsetting. As in subset.
value	The replacement values.

Details

All these methods are implementing direct replacement in the @values slot of a layer, depending on criteria used for subsetting.

Value

The extraction methods return facelayer-class objects.

icosa documentation built on March 31, 2023, 8:33 p.m.