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<section id="grid">
<span id="index-0"></span><span id="id1"></span><h1>GRID<a class="headerlink" href="#grid" title="Link to this heading">¶</a></h1>
<section id="description">
<h2>Description<a class="headerlink" href="#description" title="Link to this heading">¶</a></h2>
<p>The GRID object can be used to add labeled graticule lines to your map. Initially
developed in 2003 by John Novak, the GRID object is designed to be used inside a
<a class="reference internal" href="layer.html#layer"><span class="std std-ref">LAYER</span></a> object to allow multiple GRID objects for a single map (allowing
for example: a lat/long GRID, a State Plane GRID, and a UTM GRID to be displayed
on the same map image).</p>
</section>
<section id="mapfile-parameters">
<h2>Mapfile Parameters:<a class="headerlink" href="#mapfile-parameters" title="Link to this heading">¶</a></h2>
<dl class="simple" id="mapfile-grid-labelformat">
<dt>LABELFORMAT [DD|DDMM|DDMMSS|C format string]</dt><dd><p>Format of the label. “DD” for degrees, “DDMM” for degrees minutes, and
“DDMMSS” for degrees, minutes, seconds. A C-style formatting string is
also allowed, such as “%g°” to show decimal degrees with a degree symbol.
The default is decimal display of whatever SRS you’re rendering the GRID
with.</p>
</dd>
</dl>
<dl class="simple" id="mapfile-grid-minarcs">
<dt>MINARCS [double]</dt><dd><p>The minimum number of arcs to draw. Increase this parameter to get
more lines. Optional. Must be greater than 0.</p>
</dd>
</dl>
<dl class="simple" id="mapfile-grid-maxarcs">
<dt>MAXARCS [double]</dt><dd><p>The maximum number of arcs to draw. Decrease this parameter to
get fewer lines. Optional. Must be greater than 0.</p>
</dd>
</dl>
<dl class="simple" id="mapfile-grid-mininterval">
<dt>MININTERVAL [double]</dt><dd><p>The minimum number of intervals to try to use. The distance between
the grid lines, in the units of the grid’s coordinate system. Optional.
Must be greater than 0.</p>
</dd>
</dl>
<dl class="simple" id="mapfile-grid-maxinterval">
<dt>MAXINTERVAL [double]</dt><dd><p>The maximum number of intervals to try to use. The distance between
the grid lines, in the units of the grid’s coordinate system. Optional.
Must be greater than 0.</p>
</dd>
</dl>
<dl class="simple" id="mapfile-grid-minsubdivide">
<dt>MINSUBDIVIDE [double]</dt><dd><p>The minimum number of segments to use when rendering an arc. If the
lines should be very curved, use this to smooth the lines by adding more
segments. Optional. Must be greater than 0.</p>
</dd>
</dl>
<dl class="simple" id="mapfile-grid-maxsubdivide">
<dt>MAXSUBDIVIDE [double]</dt><dd><p>The maximum number of segments to use when rendering an arc. If the
graticule should be very straight, use this to minimize the number of
points for faster rendering. Optional, default 256. Must be greater than 0.</p>
</dd>
</dl>
</section>
<section id="example1-grid-displaying-degrees">
<h2>Example1: Grid Displaying Degrees<a class="headerlink" href="#example1-grid-displaying-degrees" title="Link to this heading">¶</a></h2>
<div class="highlight-mapfile notranslate"><div class="highlight"><pre><span></span><span class="k">LAYER</span>
<span class="k">NAME</span> <span class="s">"grid"</span>
<span class="k">METADATA</span>
<span class="s">"DESCRIPTION"</span> <span class="s">"Grid"</span>
<span class="k">END</span>
<span class="k">TYPE</span> <span class="nb">LINE</span>
<span class="k">STATUS</span> <span class="nb">ON</span>
<span class="k">CLASS</span>
<span class="k">NAME</span> <span class="s">"Graticule"</span>
<span class="k">COLOR</span> <span class="mi">0</span> <span class="mi">0</span> <span class="mi">0</span>
<span class="k">LABEL</span>
<span class="k">COLOR</span> <span class="mi">255</span> <span class="mi">0</span> <span class="mi">0</span>
<span class="k">FONT</span> <span class="s">"sans"</span>
<span class="k">TYPE</span> <span class="nb">truetype</span>
<span class="k">SIZE</span> <span class="mi">8</span>
<span class="k">POSITION</span> <span class="nb">AUTO</span>
<span class="k">PARTIALS</span> <span class="nb">FALSE</span>
<span class="k">BUFFER</span> <span class="mi">2</span>
<span class="k">OUTLINECOLOR</span> <span class="mi">255</span> <span class="mi">255</span> <span class="mi">255</span>
<span class="k">END</span>
<span class="k">END</span>
<span class="k">PROJECTION</span>
<span class="s">"init=epsg:4326"</span>
<span class="k">END</span>
<span class="k">GRID</span>
<span class="k">LABELFORMAT</span> <span class="s">"DD"</span>
<span class="k">END</span>
<span class="k">END</span> <span class="c1"># Layer</span>
</pre></div>
</div>
<img alt="../_images/grid-degrees.png" src="../_images/grid-degrees.png" />
</section>
<section id="example2-grid-displaying-degrees-with-symbol">
<h2>Example2: Grid Displaying Degrees with Symbol<a class="headerlink" href="#example2-grid-displaying-degrees-with-symbol" title="Link to this heading">¶</a></h2>
<div class="highlight-mapfile notranslate"><div class="highlight"><pre><span></span><span class="k">LAYER</span>
<span class="k">NAME</span> <span class="s">"grid"</span>
<span class="k">METADATA</span>
<span class="s">"DESCRIPTION"</span> <span class="s">"Grid"</span>
<span class="k">END</span>
<span class="k">TYPE</span> <span class="nb">LINE</span>
<span class="k">STATUS</span> <span class="nb">ON</span>
<span class="k">CLASS</span>
<span class="k">NAME</span> <span class="s">"Graticule"</span>
<span class="k">COLOR</span> <span class="mi">0</span> <span class="mi">0</span> <span class="mi">0</span>
<span class="k">LABEL</span>
<span class="k">COLOR</span> <span class="mi">255</span> <span class="mi">0</span> <span class="mi">0</span>
<span class="k">FONT</span> <span class="s">"sans"</span>
<span class="k">TYPE</span> <span class="nb">truetype</span>
<span class="k">SIZE</span> <span class="mi">8</span>
<span class="k">POSITION</span> <span class="nb">AUTO</span>
<span class="k">PARTIALS</span> <span class="nb">FALSE</span>
<span class="k">BUFFER</span> <span class="mi">2</span>
<span class="k">OUTLINECOLOR</span> <span class="mi">255</span> <span class="mi">255</span> <span class="mi">255</span>
<span class="k">END</span>
<span class="k">END</span>
<span class="k">PROJECTION</span>
<span class="s">"init=epsg:4326"</span>
<span class="k">END</span>
<span class="k">GRID</span>
<span class="k">LABELFORMAT</span> <span class="s">'</span><span class="si">%g</span><span class="s">°'</span>
<span class="k">END</span>
<span class="k">END</span> <span class="c1"># Layer</span>
</pre></div>
</div>
<img alt="../_images/grid-degrees-symbol.png" src="../_images/grid-degrees-symbol.png" />
</section>
<section id="example3-grid-displayed-in-other-projection-google-mercator">
<h2>Example3: Grid Displayed in Other Projection (Google Mercator)<a class="headerlink" href="#example3-grid-displayed-in-other-projection-google-mercator" title="Link to this heading">¶</a></h2>
<div class="highlight-mapfile notranslate"><div class="highlight"><pre><span></span><span class="k">LAYER</span>
<span class="k">NAME</span> <span class="s">"grid"</span>
<span class="k">METADATA</span>
<span class="s">"DESCRIPTION"</span> <span class="s">"Grid"</span>
<span class="k">END</span>
<span class="k">TYPE</span> <span class="nb">LINE</span>
<span class="k">STATUS</span> <span class="nb">ON</span>
<span class="k">CLASS</span>
<span class="k">NAME</span> <span class="s">"Graticule"</span>
<span class="k">COLOR</span> <span class="mi">0</span> <span class="mi">0</span> <span class="mi">0</span>
<span class="k">LABEL</span>
<span class="k">COLOR</span> <span class="mi">255</span> <span class="mi">0</span> <span class="mi">0</span>
<span class="k">FONT</span> <span class="s">"sans"</span>
<span class="k">TYPE</span> <span class="nb">truetype</span>
<span class="k">SIZE</span> <span class="mi">8</span>
<span class="k">POSITION</span> <span class="nb">AUTO</span>
<span class="k">PARTIALS</span> <span class="nb">FALSE</span>
<span class="k">BUFFER</span> <span class="mi">2</span>
<span class="k">OUTLINECOLOR</span> <span class="mi">255</span> <span class="mi">255</span> <span class="mi">255</span>
<span class="k">END</span>
<span class="k">END</span>
<span class="k">PROJECTION</span>
<span class="s">"init=epsg:3857"</span>
<span class="k">END</span>
<span class="k">GRID</span>
<span class="k">LABELFORMAT</span> <span class="s">'</span><span class="si">%.0f</span><span class="s">m'</span>
<span class="k">MININTERVAL</span> <span class="mi">5000000</span>
<span class="k">END</span>
<span class="k">END</span> <span class="c1"># Layer</span>
</pre></div>
</div>
<img alt="../_images/grid-google-mercator.png" src="../_images/grid-google-mercator.png" />
<div class="admonition note">
<p class="admonition-title">Note</p>
<p>Pay attention to the values you use for the INTERVAL parameter; it is possible
to confuse/overload MapServer by telling it to draw a graticule line every
meter (MININTERVAL 1).</p>
</div>
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<h3>Current Table Of Contents</h3>
<ul>
<li><a class="reference internal" href="#">GRID</a><ul>
<li><a class="reference internal" href="#description">Description</a></li>
<li><a class="reference internal" href="#mapfile-parameters">Mapfile Parameters:</a></li>
<li><a class="reference internal" href="#example1-grid-displaying-degrees">Example1: Grid Displaying Degrees</a></li>
<li><a class="reference internal" href="#example2-grid-displaying-degrees-with-symbol">Example2: Grid Displaying Degrees with Symbol</a></li>
<li><a class="reference internal" href="#example3-grid-displayed-in-other-projection-google-mercator">Example3: Grid Displayed in Other Projection (Google Mercator)</a></li>
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