Functions to extract first bands (head), last bands (tail) and first+last bands (series) of raster image.
# S3 method for ursaRaster
head(x, n = 3L, ...)# S3 method for ursaRaster
tail(x, n = 3L, ...)
series(x, n = 3L, s=170, ...)
Object of class ursaRaster
Object of class ursaRaster
Positive integer. Number of extracted bands.
Positive numeric. Maximal size of memory in MB for extracted raster image in the assumption that class of values is numeric.
Not used.
Nikita Platonov platonov@sevin.ru
Function series combines consequtive calling head(x); tail(x) with checking the size of extracted part of raster image. If size exceeds specified value of the argument s, then number of extracted bands n is decreased.
session_grid(NULL)
session_grid(regrid(mul=1/8))
a <- ursa_dummy(nband=101)
print(head(a))
print(tail(a))
print(series(a,2))
print(series(a[1:5]))
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