<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>GRASS GIS: r3.mask</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <link rel="stylesheet" href="grassdocs.css" type="text/css"> </head> <body bgcolor="white"> <img src="grass_logo.png" alt="GRASS logo"><hr align=center size=6 noshade> <h2>NAME</h2> <em><b>r3.mask</b></em> - Establishes the current working 3D raster mask. <h2>KEYWORDS</h2> raster3d, voxel <h2>SYNOPSIS</h2> <b>r3.mask</b><br> <b>r3.mask help</b><br> <b>r3.mask</b> <b>map</b>=<em>string</em> [<b>maskvalues</b>=<em>val[-val]</em>[,<i>val[-val]</i>,...]] [--<b>verbose</b>] [--<b>quiet</b>] <h3>Parameters:</h3> <DL> <DT><b>map</b>=<em>string</em></DT> <DD>3d raster map with reference values</DD> <DT><b>maskvalues</b>=<em>val[-val][,<i>val[-val]</i>,...]</em></DT> <DD>List of cell values to be masked out</DD> </DL> <H2>DESCRIPTION</H2> File <EM>map</EM> is used as reference file. Cells in the mask are marked as "mask out" if the corresponding cell in <EM>map</EM> contains a value in the range specified with <EM>maskvalues</EM>. <P> Before a new 3d-mask can be created the exisitng mask has to be removed with <EM>g.remove</EM>. <H3>Parameters:</H3> <DL> <DT><B>maskvalues</B> <DD>Values specified to be masked out <DT><B>grid3d</B> <DD>Name of G3D-map that is used as the mask reference </DL> <H2>SEE ALSO</H2> <EM><A HREF="g.remove.html">g.remove</A></EM> <H2>AUTHORS</H2> Roman Waupotitsch, Michael Shapiro, Helena Mitasova, Bill Brown, Lubos Mitas, Jaro Hofierka <p><i>Last changed: $Date: 2006-04-20 23:31:24 +0200 (Thu, 20 Apr 2006) $</i> <HR> <P><a href="index.html">Main index</a> - <a href="raster3D.html">raster3D index</a> - <a href="full_index.html">Full index</a></P> <P>© 2003-2008 <a href="http://grass.osgeo.org">GRASS Development Team</a></p> </body> </html>
