R: Join bands of two identically shaped data cubes

join_bands {gdalcubes} | R Documentation

## 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"))
    }

    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)))

[Package gdalcubes version 0.3.1 Index]