Geografic-Information-System/vector/v.split/v.split.html

<h2>DESCRIPTION</h2>

<em>v.split</em> splits vector lines into shorter segments using 
a maximal distance between nodes. The resulting length of all segments
is expected to be equal and not higher than the given <b>length</b> 
parameter.

<h2>EXAMPLES</h2>

The examples are based on the North Carolina sample data location.

<h3>Example 1: Inserting nodes to railroad map</h3>

<div class="code"><pre>
# extract data for this example
v.extract railroads out=myrr cats=1

# show line, category, direction (to find the beginning)
d.vect myrr disp=shape,cat,dir

# insert nodes at a distance not longer than 1000m
v.split myrr out=mrr_split length=1000
d.vect myrr_split disp=shape,topo
</pre></div>

Note: In case the data is not a polyline, build polylines in second step, eg.:

<div class="code"><pre>
# join segments into polyline
v.build.polylines myrr out=myrr_poly
v.category myrr_pol out=myrailroads option=add
</pre></div>

<h3>Example 2: Inserting vertices to railroad map</h3>

Note: first run the two steps from example 1.

<div class="code"><pre>
# insert vertices at a distance not longer than 1000m
v.split -n myrr out=myrr_split length=1000
d.vect myrr_split disp=shape,topo
</pre></div>


<h2>SEE ALSO</h2>

<em>
<a href="v.edit.html">v.edit</a>,
<a href="v.build.polylines.html">v.build.polylines</a>,
<a href="v.to.points.html">v.to.points</a>,
<a href="v.segment.html">v.segment</a>
</em>

<h2>AUTHOR</h2>

Radim Blazek

<p><i>Last changed: $Date$</i>