# Vector Operations (Vec)

  PETSc vectors (`Vec`) are used to store the field variables
in PDE-based (or other) simulations. Users guide chapter: [](ch_vectors)

<A HREF="../../../../src/vec/vec/tutorials/index.html">Examples</A> <BR>


<p>

<p>
Source files
<p><a href="pmap.c.html">pmap.c</a><br>
<a href="isltog.h.html">isltog.h</a><br>
<a href="psort.c.html">psort.c</a><br>
<a href="kdtree.c.html">kdtree.c</a><br>
<a href="isltog.c.html">isltog.c</a><br>
<a href="isio.c.html">isio.c</a><br>

<p>
Directories
<p><a href="hdf5/index.html">hdf5</a><br>
<a href="tests/index.html">tests</a><br>
<a href="ftn-custom/index.html">ftn-custom</a><br>