window_time | R Documentation |
This generic function applies a reducer function over a moving window over the time dimension of a data cube, an R array, or other classes if implemented.
window_time(x, ...)
x |
object to be reduced |
... |
further arguments passed to specific implementations |
value and type depend on the class of x
window_time.cube
# 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="2018-07"),
srs="EPSG:32618", nx = 400, dt="P1M")
L8.cube = raster_cube(L8.col, v)
L8.nir = select_bands(L8.cube, c("B05"))
window_time(L8.nir, window = c(2,2), "min(B05)")
window_time(L8.nir, kernel=c(-1,1), window=c(1,0))
plot(window_time(L8.nir, kernel=c(-1,1), window=c(1,0)), key.pos=1)
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