join_bands: Join bands of two identically shaped data cubes

In gdalcubes: Earth Observation Data Cubes from Satellite Image Collections

Join bands of two identically shaped data cubes

Description

Create a proxy data cube, which joins the bands of two identically shaped data cubes. The resulting cube will have bands from both input cubes.

Usage

join_bands(cube_list, cube_names = NULL)

Arguments

cube_list	a list with two or more source data cubes
cube_names	list or character vector with optional name prefixes for bands in the output data cube (see Details)

Details

The number of provided cube_names must match the number of provided input cubes. If no cube_names are provided, bands of the output cube will adopt original names from the input cubes (without any prefix). If any two of the input bands have identical names, prefixes default prefixes ("X1", "X2", ...) will be used.

Value

proxy data cube object

Note

This function returns a proxy object, i.e., it will not start any computations besides deriving the shape of the result.

Examples

# create image collection from example Landsat data only 
# if not already done in other examples
if (!file.exists(file.path(tempdir(), "L8.db"))) {
  L8_files <- list.files(system.file("L8NY18", package = "gdalcubes"),
                         ".TIF", recursive = TRUE, full.names = TRUE)
  create_image_collection(L8_files, "L8_L1TP", file.path(tempdir(), "L8.db"), quiet = TRUE) 
}

L8.col = image_collection(file.path(tempdir(), "L8.db"))
v = cube_view(extent=list(left=388941.2, right=766552.4,
                          bottom=4345299, top=4744931, t0="2018-01", t1="2018-05"),
                          srs="EPSG:32618", nx = 497, ny=526, dt="P1M")
L8.cube = raster_cube(L8.col, v)
L8.cube.b04 = select_bands(raster_cube(L8.col, v), c("B04"))
L8.cube.b05 = select_bands(raster_cube(L8.col, v), c("B05"))
join_bands(list(L8.cube.b04,L8.cube.b05))

plot(join_bands(list(L8.cube.b04,L8.cube.b05)))

gdalcubes documentation built on May 29, 2024, 5:11 a.m.