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<h2>set mpt</h2>
<code>set mpt <i>type off |
&lt;&lt;col&gt;&lt;style&gt;&lt;thick&gt;&gt;</i></code><p>
command to control map background behavior. <code><i>type</i></code> is
the map type; it can be a number from <code>0</code> to <code>255</code>,
or it can be an asterick(*) to indicate this command applies to all the
type values.  The <code>color</code> can be set to <code>-1</code>, which
indicates to GrADS to use the <a href="gradcomdsetmap.html"><code>set
map</code></a> settings for this map type, rather than the settings
specified by the <code>set mpt</code> command.<p>
<h3>Usage Notes</h3>
<h3>Examples</h3>
<ol>
<li>Lets say you want to use the hires data set and plot political 
boundaries, but not state boundaries:<p>

<ul>
<code>
set mpt * off<br>
set mpt 0 -1<br>
set mpt 1 -1</code></ul><p>

<li>


Lets say you want to use the hires data set, and have coastlines
be thicker, and a different color, than political boundaries:<p>
<ul>
<code>
set mpt * off<br>
set mpt 0 1 1 6<br>
set mpt 1 15 1 1</code></ul><p>

<li>
The <a href="gradcomdsetmpdraw.html"><code>set mpdraw</code></a> and
<a href="gradcomddrawmap.html"><code>draw map</code></a> commands work as
before; you can do some interesting line types by overlaying:<p>
<ul>
<code>
set mpt 51 7 1 12<br>
draw map<br>
set mpt 51 0 1 1<br> 
draw map</code></ul>
<p>

This would produce two yellow lines parallel and close together for 
map type 51.  </ol>