Description Usage Arguments Details Value See Also Examples
basindelin_big
is for use with large digital elevation datasets, to
delineate hydrological basins.
1 | basindelin_big(dem, dirout = NA, trace = TRUE)
|
dem |
a raster object of elevations. |
dirout |
an optional character vector containing a single path directory for temporarily storing tiles. Deleted after use. Tilde expansion (see |
trace |
a logical value indicating whether to plot and report on progress. |
basindelin_big
divides the large dataset into tiles and then
uses basindelin()
to delineate basins for each tile before mosaicing back
together and merging basins along tile edges if not seperated by a boundary
If dirout
is unspecified, then a directory basinsout
is
temporarily created within the working directory. If trace
is TRUE (the
default) then progress is tracked during three stages: (1) the basins
of each tile are plotted, (2) basins after mosaicing, but prior
to merging are plotted and (3) on each merge iteration, the number of basins
to merge is printed and processed basin is plotted.
a raster object with individual basins numbered sequentially as integers.
basindelin()
for working with smaller datasets.
1 2 | basins <- basindelin_big(dtm1m)
plot(basins, main = "Basins")
|
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