Geografic-Information-System/scripts/r.plane/r.plane.html

<H2>DESCRIPTION</H2>


<EM>r.plane</EM> creates a tilted plane raster map given user-specified
parameters for inclination, azimuth, and the geographic location of a
point on the plane.<BR>
The angle orientations of the <em>azimuth</em> parameter increase counter-clockwise,
i.e., 0 degree = N, 45 degree = NW, 90 degree = W etc.
<P>
Increasing values of the <em>dip</em> parameter progressively lower (or dip) the northern
half of the plane, and incline the southern half, assuming the <em>azimuth</em> parameter 
is held constant at 0 degrees.


<H2>NOTES</H2>
<tt>g.region -c</tt> provides the easting and northing coordinates for
the center of the current region.
<P>
<em>int</em> maps take less disk space than <em>float</em>s, which in turn
take up less space than <em>double</em>s (but can be less exact).


<H2>EXAMPLE</H2>

A tilted plane in the Spearfish region:

<div class="code"><pre>
r.plane myplane45 dip=45 az=90 east=599490 north=4920855 \
        elev=1000 type=float
</pre></div>


<H2>AUTHOR</H2>

Unknown<br>
Updated to GRASS 5.7 by Michael Barton, Arizona State University
<p><i>Last changed: $Date$</i></p>