.TH "diffpos" "1" 
.SH "NAME" 
diffpos \(em compare the contents of two \fB.3d\fP files 
.SH "SYNOPSIS" 
.PP 
\fBdiffpos\fR \ .3d file .3d file [threshold]  
.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 
\fB.pos\fP files produced by earlier versions of cavern, or by 3dtopos. 
.SH "See Also" 
.PP 
\fB3dtopos\fP\fB(1)\fP, 
\fBaven\fP\fB(1)\fP, 
\fBcad3d\fP\fB(1)\fP, 
\fBcavern\fP\fB(1)\fP, 
\fBextend\fP\fB(1)\fP, 
\fBsorterr\fP\fB(1)\fP, 
\fBsvxedit\fP\fB(1)\fP 
.\" created by instant / docbook-to-man, Mon 15 Oct 2012, 17:17