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-<h2>DESCRIPTION</h2>
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-
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-<em>d.vect.thematic</em> creates thematic maps from vector features of
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-all types and numeric attributes stored in the attribute table connected to a vector
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-map.
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-
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-<p>
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-Thematic maps can be displayed by either a <i>graduated color
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-scheme</i> (for all vector types), as <i>graduated icon sizes</i> (for
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-point and centroid types), or <i>graduated line widths</i> (for lines
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-and boundaries with associated attributes), see <b>themetype</b>
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-option for details. The user selects the vector <b>map</b> to be
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-mapped and attribute <b>column</b> from which to derive mapping
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-intervals, and (optionally) the <b>layer</b> for attribute data.
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-
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-<p>In thematic maps, the color or point size changes for each range of
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-attribute values. Value ranges for thematic mapping can be set at
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-<i>regular intervals</i>, <i>standard deviation</i> units on either side of the
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-<i>mean</i>, <i>quartiles</i>, or delimited by <i>user-defined
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-breakpoints</i>, see <b>themecalc</b> option. User-defined
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-breakpoints (<b>themecalc=custom_breaks</b>) can be entered
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-via <b>breakpoints</b> option.
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-
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-<h2>NOTES</h2>
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-
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-<p>There is option <b>colorscheme</b> to define the color scheme
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-(graduated colors) and range of point sizes (graduated points) for
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-thematic maps.
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-
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-<p>
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-Optionally, a simple text legend is printed when <b>-l</b> flag is
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-given. A graphic legend can be drawn in the selected display monitor.
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-
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-<p>
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-Thematic colors can be uploaded by <b>rgb_column</b> option
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-to a specified attribute column (which is created automatically if
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-doesn't exist in the table) for later display
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-via <em><a href="d.vect.html">d.vect</a></em> and <b>rgb_column</b>
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-option.
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-
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-<p>When the <b>psmap</b> option is set to 'name', two psmap instruction files are
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-created (in the current directory if no path is given), one for the map
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-('name.psmap') and one for the legend ('name_legend.psmap'). The map file also
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-contains 'label' commands which allow to create a legend directly in the map by
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-adding a 'vlegend' command. See the <em><a href="ps.map">ps.map</a></em> manual
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-page for more details.
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-
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-<p>
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-The algorithm currently uses the <em><a href="v.univar.html">v.univar</a></em> to calculate basic
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-descriptive statistics needed for thematic mapping (minimum, maximum, mean,
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-standard deviation, and quartiles).
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-
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-<h2>EXAMPLES</h2>
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-
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-Earthquake points with color gradient:
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-
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-<div class="code"><pre>
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-d.vect.thematic -l recent_earthquakes column=magnitude type=point
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-</pre></div>
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-
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-<p>Earthquake points with different sizes:
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-
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-<div class="code"><pre>
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-d.vect.thematic -l recent_earthquakes column=magnitude type=point \
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- themetype=graduated_points maxsize=15
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-</pre></div>
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-
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-<center>
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-<img src="d_vect_thematic_equake.png"><br>
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-Example for earthquake map rendering
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-(<a href="https://trac.osgeo.org/grass/browser/grass-promo/tutorials/batch_processing/earthquakes">script code</a>)
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-</center>
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-
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-<p>North Carolina: differences between 'elevation' (10m) and 'elev_state_500m':
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-
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-<div class="code"><pre>
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-# random sampling of elevation points:
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-g.region raster=elevation -p
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-v.random random npoints=200
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-v.db.addtable random column="el10 double precision"
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-# transfer elevations to attribute table of random points map:
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-v.what.rast random rast=elevation column=el10
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-v.db.select random
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-
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-# comparative sampling of second map, incl. differences:
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-v.sample input=random column=el10 raster=elev_state_500m output=elev_sample
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-v.db.select elev_sample
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-
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-# univariate statistics:
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-v.univar -e elev_sample column=diff type=point
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-
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-# thematic map:
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-d.mon wx0
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-d.vect.thematic -l elev_sample column=diff type=point
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-</pre></div>
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-
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-<p>
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-North Carolina sample dataset example:
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-
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-<div class="code"><pre>
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-g.region vector=nc_state
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-d.vect.thematic -l precip_30ynormals column=annual type=point
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-</pre></div>
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-
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-<h2>SEE ALSO</h2>
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-
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-<em>
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-<a href="d.vect.html">d.vect</a>,
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-<a href="d.vect.chart.html">d.vect.chart</a>,
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-<a href="v.univar.html">v.univar</a>
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-</em>
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-
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-<h2>AUTHORS</h2>
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-
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-Michael Barton, Arizona State University
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-
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-<p>
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-Various updates by:<br>
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-Daniel Cavelo Aros,<br>
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-Martin Landa,<br>
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-Jachym Cepicky.
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-
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-<p>
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- <i>Last changed: $Date: 2008-08-15 08:16:42 +0200 (Fri, 15 Aug 2008)$</i>
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Martin Landa
