2 <refentrytitle>diffpos
</refentrytitle>
3 <manvolnum>1</manvolnum>
7 <refname>diffpos
</refname>
8 <refpurpose>compare the contents of two
<filename>.3d
</filename> files
14 <command>diffpos
</command>
15 <arg choice=
"req">.3d file
</arg>
16 <arg choice=
"req">.3d file
</arg>
17 <arg choice=
"opt">threshold
</arg>
21 <refsect1><title>Description
</title>
24 Diffpos reports stations which
25 are in one file but not the other, and also stations which have moved
26 by more than a specified threshold distance in X, Y, or Z. The
27 threshold distance is given in metres and defaults to
0.01m if not
32 For backward compatibility diffpos will also read the
33 <filename>.pos
</filename> files produced by earlier versions of cavern, by
34 3dtopos, or by aven's export feature (requires
1.2.19 or later).