How to get the highest point from a set?

If you have 2021.2 I believe you can do Constructed Extreme points, but I recall you having an older version.

First example here will put the points in order of highest to lowest by hit number. Easier to pull the point out and use it's XYZ data

Second example will sort Highest to lowest with actual Z values present in variable.

ASSIGN/V1=MAXINDICES(5CR.HITS.Z) for assorted array
ASSIGN/V1=MAXINDEX(5CR.HITS.Z) for single max point
                OR TRY
ASSIGN/V1=SORTDOWN(5CR.HITS.Z)

Added into generic point for extraction if you cannot use Extreme Point.

FOR MAXINDICES ARRAY USE [VARIABLE[POSITION IN ARRAY]] 
EXAMPLE ---> ARRAY(6, 7, 4, 3, 2, 1, 5) [V1[1]] = Point 6, Position 1 in Array

F1         =GENERIC/POINT,DEPENDENT,CARTESIAN,$
            NOM/XYZ,<0,0,0>,$
            MEAS/XYZ,<5CR.HIT[V1[1]].X,5CR.HIT[V1[1]].Y,5CR.HIT[V1[1]].Z>,$
            NOM/IJK,<0,0,1>,$
            MEAS/IJK,<0,0,1>
            
FOR MAXINDEX JUST USE [VARIABLE].X Y OR Z

F1         =GENERIC/POINT,DEPENDENT,CARTESIAN,$
            NOM/XYZ,<0,0,0>,$
            MEAS/XYZ,<5CR.HIT[V1].X,5CR.HIT[V1].Y,5CR.HIT[V1].Z>,$
            NOM/IJK,<0,0,1>,$
            MEAS/IJK,<0,0,1>

MAXINDEX(SCN1.HIT[1..SCN1.NUMHITS].Z) works also

MAXINDEX(SCN1.HIT[1..SCN1.NUMHITS].Z) works also

Yes, this is probably better for him, I thought I put that in here but i forgot to, thanks Jef! Added it in there

Thank you JEFMAN  and WilliamL I think I could get the highest hit based on this

The issue I have is about datum C, which is a point on a cylinder surface with （X,Y).  I did level the axis to the cylinder and move the axis to centre of it. Since the cylinder was not perfect with bent,  there was always couple mm away from the top point when probe hit the surface.

Since I did measure the cylinder. if I construct a circle from the cylinder with a plane( cut it), I could get a circle or arc, Can we get the highest point of the cycle with some function?

So you would want the max Polar Point / Largest Radial Point?

ASSIGN/V1=FUNCTION((X,Y),SQRT((X^2)+(Y^2)))
ASSIGN/V2=MAXINDEX(V1(CR1.HITS.X,CR1.HITS.Y))

F1         =GENERIC/POINT,DEPENDENT,CARTESIAN,$
            NOM/XYZ,<0,0,0>,$
            MEAS/XYZ,<CR1.HIT[V2].X,CR1.HIT[V2].Y,CR1.HIT[V2].Z>,$
            NOM/IJK,<0,0,1>,$
            MEAS/IJK,<0,0,1>

It turns to a circle in a certain alignment, for example, with top Z axis value. It is not about hit anymore. I wonder whether we could have this kind of function

So you said above, highest point of the "cycle". Can you explain what that means? I can probably do something, but I need more details

I have 2 long tubes about diameter 30mm and 600 mm long. They are the back bone of a seat back. My datum C is on the surface of tube( top point). I did measure the tubes and when I probed the datum C with x and y, it always hit a point with offset. so I could not get the high point. Since I could not get high C, my datum ABC, has couple mm offset on Z direction. Therefore, I wonder if they are any functions I could get the highest point from tube ?

So you want to find the highest point on the Datum C tube surface? You could do a scan and grab the highest point from that scan