rsaga.close.gaps {RSAGA} | R Documentation |
Close (Interpolate) Gaps
rsaga.close.gaps(in.dem, out.dem, threshold = 0.1, ...) rsaga.close.one.cell.gaps(in.dem, out.dem, ...)
in.dem |
input: digital elevation model (DEM) as SAGA grid file
(default file extension: .sgrd ) |
out.dem |
output: DEM grid file without no-data values (gaps). Existing files will be overwritten! |
threshold |
tension threshold for adjusting the interpolator (default: 0.1) |
... |
optional arguments to be passed to rsaga.geoprocessor ,
including the env RSAGA geoprocessing environment |
rsaga.close.one.cell.gaps
only fill gaps whose neighbor
grid cells have non-missing data.
In rsaga.close.gaps
, larger tension thresholds can be used to reduce
overshoots and undershoots in the surfaces used to fill (interpolate) the
gaps.
The type of object returned depends on the intern
argument
passed to the rsaga.geoprocessor
. For intern=FALSE
it is a numerical error code (0: success), or otherwise (default)
a character vector with the module's console output.
This function uses modules 7 (rsaga.close.gaps
and 6
rsaga.close.one.cell.gaps
from the SAGA library grid_tools
.
Alexander Brenning (R interface), Olaf Conrad (SAGA module)
## Not run: # using SAGA grids: rsaga.close.gaps("rawdem.sgrd","dem.sgrd") # using ASCII grids: rsaga.esri.wrapper(rsaga.close.gaps,in.dem="rawdem",out.dem="dem") ## End(Not run)