RSAGA (version 1.4.0)

rsaga.close.gaps: SAGA Modules Close Gaps and Close One Cell Gaps

Description

Close (Interpolate) Gaps

Usage

rsaga.close.gaps(in.dem, out.dem, threshold = 0.1, ...)
rsaga.close.one.cell.gaps(in.dem, out.dem, ...)

Value

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.

Arguments

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

Author

Alexander Brenning (R interface), Olaf Conrad (SAGA module)

Details

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.

See Also

rsaga.geoprocessor(), rsaga.env()

Examples

if (FALSE) {
# 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")
}