st_as_stars.cube

Coerce gdalcubes object into a stars object

Description

The function materializes a data cube as a temporary netCDF file and loads the file with the stars package.

Usage

st_as_stars.cube(.x, ...)

Arguments

Argument	Description
.x	data cube object to coerce
…	not used

Value

stars object

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="2018-04", t1="2018-04"),
              srs="EPSG:32618", nx = 497, ny=526, dt="P1M")
if(require("stars"))
  st_as_stars(select_bands(raster_cube(L8.col, v), c("B04", "B05")))

Loading required package: stars

Loading required package: abind

Loading required package: sf

Linking to GEOS 3.10.2, GDAL 3.4.1, PROJ 8.2.1; sf_use_s2() is TRUE

stars object with 3 dimensions and 2 attributes
attribute(s):
   Min. 1st Qu. Median     Mean 3rd Qu.  Max.  NA's
4  6119    6928   8717 11063.82   10620 53002 99070
5  5564    6411  13519 14300.35   17073 57497 99070
dimension(s):
     from  to  offset  delta                refsys point
x       1 497  388941  759.8 WGS 84 / UTM zone 18N    NA
y       1 526 4744931 -759.8 WGS 84 / UTM zone 18N    NA
time    1   1      NA     NA               POSIXct FALSE
                      values x/y
x                       NULL [x]
y                       NULL [y]
time [2018-04-01,2018-05-01)