Hi Lucia,

I am not sure if I completely understood what you want to do.

If you have a landmark-set and want to get the distance of the first two landmarks, you could use "Tcl Command Module" to query the two landmarks' coordinates and calculate their distance with the following small script. The result will be shown in the Tcl console window (see attached screenshot).

set lm [$this input source]

set p0 [$lm getPoint 0]

set p1 [$lm getPoint 1]

set p0x [lindex $p0 0]

set p0y [lindex $p0 1]

set p0z [lindex $p0 2]

set p1x [lindex $p1 0]

set p1y [lindex $p1 1]

set p1z [lindex $p1 2]

set dist [expr sqrt( ($p0x - $p1x)**2 \

+ ($p0y - $p1y)**2 \

+ ($p0z - $p1z)**2 ) \

]

echo "Distance: " $dist

To use "Tcl Command Module", you can invoke it by right-clicking on the background of the "Project View" area, select "Create Object"->"Animations and Scripts"->"Tcl Command Module".

Then just copy/paste the script lines into the "Text" field, and connect "Input" to your landmark-set.

When you press "Apply", the distance of the first two landmarks in the landmark-set is evaluated.

I hope that helps ...

Kind regards,

Andreas