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<h4><a name="shading-auto">8.4.1 <code>auto</code></a></h4>
<p>Paints isolated points in their selected colour
but where multiple points
<em>in the same layer</em>
overlap it adjusts the clour by darkening it.
This means that for isolated points
(most or all points in a non-crowded plot,
or outliers in a crowded plot)
it behaves just like <a href="shading-flat.html">flat</a> mode,
but it's easy to see where overdense regions lie.
</p>
<p>This is like <a href="shading-density.html">density</a> mode,
but with no user-configurable options.
</p>
<p>
<strong>Usage:</strong>
<pre>
shadingN=auto colorN=<rrggbb>|red|blue|...
</pre>
</p>
<p>All the parameters listed here
affect only the relevant layer,
identified by the suffix
<code>N</code>.
</p>
<p>
<strong>Example:</strong>
</p>
<div align="center"><img src="plot2-shading-auto.png" alt="" align="middle"></div>
<p><pre> stilts plot2plane layer1=mark in1=dr5qso.fits
<strong>shading1=auto</strong>
x1=psfmag_g-psfmag_r y1=psfmag_u-psfmag_g size1=2
xmin=-0.5 xmax=2.5 ymin=-1 ymax=6</pre></p>
<p>Associated parameters are as follows:
<dl>
<dt><strong><code>colorN = <rrggbb>|red|blue|...</code> <em>(<a href="http://docs.oracle.com/javase/6/docs/api/java/awt/Color.html">Color</a>)</em></strong></dt>
<dd>The color of plotted data,
given by name or as a hexadecimal RGB value.
<p>The standard plotting colour names are
<code>red</code>, <code>blue</code>, <code>green</code>, <code>grey</code>, <code>magenta</code>, <code>cyan</code>, <code>orange</code>, <code>pink</code>, <code>yellow</code>, <code>black</code>, <code>light_grey</code>, <code>white</code>.
However, many other common colour names (too many to list here)
are also understood.
The list currently contains those colour names understood
by most web browsers,
from <code>AliceBlue</code> to <code>YellowGreen</code>,
listed e.g. in the
<em>Extended color keywords</em> section of
the <a href="http://www.w3c.org/TR/css3-color#svg-color">CSS3</a> standard.
</p>
<p>Alternatively, a six-digit hexadecimal number <em>RRGGBB</em>
may be supplied,
optionally prefixed by "<code>#</code>" or "<code>0x</code>",
giving red, green and blue intensities,
e.g. "<code>ff00ff</code>", "<code>#ff00ff</code>"
or "<code>0xff00ff</code>" for magenta.
</p>
<p>[Default: <code>red</code>]
</p>
</dd>
</dl>
</p>
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<hr><i>STILTS - Starlink Tables Infrastructure Library Tool Set<br>Starlink User Note256<br>STILTS web page:
<a href="http://www.starlink.ac.uk/stilts/">http://www.starlink.ac.uk/stilts/</a><br>Author email:
<a href="mailto:m.b.taylor@bristol.ac.uk">m.b.taylor@bristol.ac.uk</a><br>Mailing list:
<a href="mailto:topcat-user@jiscmail.ac.uk">topcat-user@jiscmail.ac.uk</a><br></i></body>
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