GSIF (version 0.5-5.1)

getSpatialTiles: Get a list of tiles (regular blocks)

Description

Creates a list of tiles ("SpatialPolygons") for a given spatial domain i.e. extent. Input can be any object of class "Spatial" or "GDALobj".

Usage

# S4 method for Spatial
getSpatialTiles(obj, block.x, block.y = block.x, 
    overlap.percent = 0, limit.bbox = TRUE, return.SpatialPolygons = TRUE)
# S4 method for ANY
getSpatialTiles(obj, block.x, block.y = block.x, 
    overlap.percent = 0, limit.bbox = TRUE, return.SpatialPolygons = FALSE)

Arguments

obj

object of class "Spatial*"

block.x

numeric; size of block in x-direction (meters or corresponding mapping units)

block.y

numeric; size of block in y-direction (meters or corresponding mapping units)

overlap.percent

numeric; percentage overlap (must be a positive number)

limit.bbox

logical; specifies whether to limit the extent of tiles to the bounding box only

return.SpatialPolygons

logical; specifies whether to return a list of tiles as "SpatialPolygons" or a data frame with bounding box coordinates

Value

Returns a list of tiles either as a list of "SpatialPolygons" or a data frame with with bounding box coordinates.

Details

The first output tile starts by default at the lower left corner. getSpatialTiles-method can only be used to generate regular tiles.

See Also

tile, sp::spsample