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Find layers within GRASS GIS with multiple patterns

Source: R/grass_find_layers.R
grass_find_layer.Rd

Find layers within GRASS GIS with multiple patterns

Usage

grass_find_layer(
  list_patterns,
  layers_grass = NULL,
  type = "raster",
  pattern = "*",
  mapset = "PERMANENT"
)

Arguments

list_patterns

[list,character]
List of strings, each corresponding to a pattern to be searched in the names of layers within a GRASS GIS mapset. The patterns are filtered one after the other, in the order they are listed.

layers_grass

[vector,character]
Vector of strings with the names of maps being assessed, within a GRASS GIS mapset, such as the ones created through the g.list module. If NULL (default), the list of maps within the GRASS GIS mapset is assessed within the function.

type

[character(1)="raster"]
Type of layer to be listed within the GRASS GIS mapset (e.g. "raster", "vector"), if layers_grass is NULL.

pattern

[character]
Regular expression used to list maps within the GRASS GIS mapset, if layers_grass is NULL. Default is "*", so all maps of a given type are listed.

mapset

[character(1)="PERMANENT"]
Name of the mapset from which maps are listed, if layers_grass is NULL. Default is "PERMANENT".

Value

One or more strings with the names of the maps within the GRASS GIS mapset.