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.TH "DIFFPOS" "1" "09 January 2019" "" ""

.SH NAME
diffpos \- compare the contents of two .3d files
.SH SYNOPSIS

\fBdiffpos\fR \fB\&.3d file\fR \fB\&.3d file\fR [ \fBthreshold\fR ]

.SH "DESCRIPTION"
.PP
Diffpos reports stations which
are in one file but not the other, and also stations which have moved
by more than a specified threshold distance in X, Y, or Z.  The
threshold distance is given in metres and defaults to 0.01m if not
specified.
.PP
For backward compatibility diffpos will also read the
\fI\&.pos\fR files produced by earlier versions of cavern, by
the (now removed) 3dtopos tool, by survexport, or by aven's export feature
(requires 1.2.19 or later).
.SH "SEE ALSO"
.PP
\fBaven\fR(1),
\fBcavern\fR(1),
\fBdump3d\fR(1),
\fBextend\fR(1),
\fBsorterr\fR(1),
\fBsurvexport\fR(1)