Description Usage Arguments Details Value Author(s) Examples
Functions to extract first bands (head
), last bands (tail
) and first+last bands (series
) of raster image.
1 2 3 4 5 6 7 |
x |
Object of class |
n |
Positive integer. Number of extracted bands. |
s |
Positive numeric. Maximal size of memory in MB for extracted raster image in the assumption that class of values is |
... |
Not used. |
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.
Object of class ursaRaster
Nikita Platonov platonov@sevin.ru
1 2 3 4 5 6 7 | 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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