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<title>ploticus: dist prefab</title>
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<body bgcolor=D0D0EE vlink=0000FF>
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<table cellpadding=2 bgcolor=FFFFFF width=550 ><tr>
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<table cellpadding=2 width=550><tr>
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<td><br><h2>dist prefab</h2></td>
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<a href="../doc/Welcome.html"><img src="../doc/ploticus.gif" border=0></a><br>
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<a href="../doc/Welcome.html">Welcome</a>
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<a href="../gallery/index.html">Gallery</a>
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<a href="../doc/Contents.html">Handbook</a>
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<title>Manual page for dist_prefab(PL)</title>
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<center><table cellpadding=2><tr>
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<td><img src="../gallery/prefab_img/dist1.gif"></td></tr>
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pl -prefab dist fld=1 data=data6 curve=yes binsize=0.05 \
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barwidth=0.08 ygrid=yes
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<center><table cellpadding=2><tr>
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<td><img src="../gallery/prefab_img/dist2.gif"></td></tr>
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pl -prefab dist fld=1 data=data8 cats=yes yrange=0 \
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stubvert=yes barwidth=0.05 ylbl="# Hits" order=rev
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<a href="prefabs.html#examples">
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How to run these examples
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<a href="prefabs.html">
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that computes and displays a frequency distribution (histogram)
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on a data field.<tt> </tt>
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The data file does not need to be ordered in any particular way.<tt> </tt>
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The field may contain continuous numeric data, or alphanumeric values.<tt> </tt>
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Continuous numeric data is the default, but
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the <b>cats</b> option may be used to produce category distributions
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(each unique value having a bar).<tt> </tt>
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With continuous numeric data, "bins" will be set up and values will
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be placed into these bins (any alpha values will be lumped into one
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This prefab is based on
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<a href="tabulate.html">
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If no bars are appearing, try specifying bar size, eg.<tt> </tt>
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<tt>barsize=0.1</tt>. This glitch is due to the fact that
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default bar widths are related to data space.<tt> </tt>
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<a href="prefab_stdparms.html">
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Standard prefab parameters
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are all supported except <b>x</b>, <b>y</b>, and <b>err</b>.<tt> </tt>
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<b>data</b> is required.<tt> </tt>
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<b>fld</b> (required) is the
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<a href="attributetypes.html#dfield">
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that the frequency distribution will be computed on
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<b>binsize</b> is the size of one "bin" in numeric distributions.<tt> </tt>
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<b>cats</b> may be given as <tt>yes</tt> if <b>fld</b> is not
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continuous numeric data.<tt> </tt>
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<b>curve</b> may be given as <tt>yes</tt> or as a
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<a href="linedetails.html">
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linedetails attribute
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to cause a bspline curve to be rendered along with the histogram.<tt> </tt>
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<a href="color.html">
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of the bars (default = pink)
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<b>barwidth</b> is the width of the bars in absolute units.<tt> </tt>
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<b>savetable</b> may be given in order to save a text representation of
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the computed frequency distribution. It may be a file name, <tt>stderr</tt>, or
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<tt>stdout</tt>.<tt> </tt>
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<b>order</b> controls the order in which bars are drawn from left to right.
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By default this is <tt>natural</tt> (alphabetical order).
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Allowable values are <tt>mag</tt> (from low to high), and <tt>rev</tt> (high to low).<tt> </tt>
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<a href="Welcome.html">
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<img src="../doc/ploticus.gif" border=0></a><br><small>data display engine <br>
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<a href="../doc/Copyright.html">Copyright Steve Grubb</a>
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<img src="../gallery/all.gif">
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Markup created by <em>unroff</em> 1.0, <tt> </tt> <tt> </tt>February 26, 2002.
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