rsaga.contour

input: digital elevation model (DEM) as SAGA grid file (default file extension: <code>.sgrd</code>)

in.grid

output: contour line shapefile. Existing files will be overwritten!

out.shapefile

lower limit, upper limit, and equidistance of contour lines

zstep, zmin, zmax

optional parameter: vertex type for resulting contours. Default <code>"xy"</code> (or 0). Only available with SAGA GIS 2.1.3+.<ul>
<li>0 <code>"xy"</code></li>
<li>1 <code>"xyz"</code></li>
</ul>

vertex

A SAGA geoprocessing environment, see <code><a rd-options="=rsaga.env" href="/link/rsaga.env()?package=RSAGA&version=1.3.0&to=%3Drsaga.env" data-mini-rdoc="=rsaga.env::rsaga.env()">rsaga.env()</a></code>

arguments to be passed to <code><a rd-options="=rsaga.geoprocessor" href="/link/rsaga.geoprocessor()?package=RSAGA&version=1.3.0&to=%3Drsaga.geoprocessor" data-mini-rdoc="=rsaga.geoprocessor::rsaga.geoprocessor()">rsaga.geoprocessor()</a></code>

Creates a contour lines shapefile from a grid file in SAGA grid format.

spatial

interface

Provides access to geocomputing and terrain analysis functions
of the geographical information system (GIS) 'SAGA' (System for Automated
Geoscientific Analyses) from within R by running the command line version of
SAGA. This package furthermore provides several R functions for handling ASCII
grids, including a flexible framework for applying local functions (including
predict methods of fitted models) and focal functions to multiple grids. SAGA
GIS is available under GPLv2 / LGPLv2 licence from
<http://sourceforge.net/projects/saga-gis/>.

Alexander Brenning

RSAGA

SAGA Geoprocessing and Terrain Analysis

Donovan Bangs

Marc Becker

Patrick Schratz

Fabian Polakowski

rsaga.contour function

<dl><dt>in.grid</dt>
<dd>input: digital elevation model (DEM) as SAGA grid file (default file extension: <code>.sgrd</code>)</dd>
<dt>out.shapefile</dt>
<dd>output: contour line shapefile. Existing files will be overwritten!</dd>
<dt>zstep, zmin, zmax</dt>
<dd>lower limit, upper limit, and equidistance of contour lines</dd>
<dt>vertex</dt>
<dd>optional parameter: vertex type for resulting contours. Default <code>"xy"</code> (or 0). Only available with SAGA GIS 2.1.3+.<ul>
<li>0 <code>"xy"</code></li>
<li>1 <code>"xyz"</code></li>
</ul></dd>
<dt>env</dt>
<dd>A SAGA geoprocessing environment, see <code>rsaga.env()</code></dd>
<dt>...</dt>
<dd>arguments to be passed to <code>rsaga.geoprocessor()</code></dd></dl>

Arguments

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

Author

Contour Lines from a Grid — rsaga.contour

<dl>

<dt>in.grid</dt>
<dd>input: digital elevation model (DEM) as SAGA grid file (default file extension: <code>.sgrd</code>)</dd>


<dt>out.shapefile</dt>
<dd>output: contour line shapefile. Existing files will be overwritten!</dd>


<dt>zstep, zmin, zmax</dt>
<dd>lower limit, upper limit, and equidistance of contour lines</dd>


<dt>vertex</dt>
<dd>optional parameter: vertex type for resulting contours. Default <code>"xy"</code> (or 0). Only available with SAGA GIS 2.1.3+.<ul>
<li>0 <code>"xy"</code></li>
<li>1 <code>"xyz"</code></li>
</ul></dd>


<dt>env</dt>
<dd>A SAGA geoprocessing environment, see <code>rsaga.env()</code></dd>


<dt>...</dt>
<dd>arguments to be passed to <code>rsaga.geoprocessor()</code></dd>

</dl>

rsaga.contour: Contour Lines from a Grid

Description

Usage

Value

Arguments

Author

See Also