Min/Max Capability?

[Jason S]

Hi there! We have a callout that we're trying to figure out how to make happen in PC-DMIS. They are asking for 12 points along a plane and want the highest and the lowest of the 12 points reported, relative to Z. Sounds simple enough, BUT is there any way to create a dimension in such a way as to report ONLY the highest and lowest points? Thank you in advance for your help!

[Matthew D. Hoedeman]

Have you tried F10 and marking the MinMax box?

[Jason S]

We did, but with the reporting system that we use, that's just not going to work. We export a .CSV for reporting purposes. Just wondering if there is an option in the feature itself, that might work? Like if you were to make a plane out of those 12 points, is there a feature that might look at all of the points in that plane and be able to output a min and a max?

[Matthew D. Hoedeman]

it will take coding, use an array, then have code pick the highest and lowest point. check the CODE section here.

[Jason S]

Thank you, Matthew! That's kind of what I was thinking.

[bfire85]

You can do something like this. Credit goes to JEFMAN

ASSIGN/V5=MAXINDEX(PLN_BURR.HIT[1..PLN_BURR.NUMHITS].Z)
            ASSIGN/V6=PLN_BURR.HIT[V5].XYZ
BURR_PNT_MAX=GENERIC/POINT,DEPENDENT,CARTESIAN,$
            NOM/XYZ,<0+0,0+0,0+0>,$
            MEAS/XYZ,<V6.X,V6.Y,V6.Z>,$
            NOM/IJK,<0+0,0+0,1+0>,$
            MEAS/IJK,<0+0,0+0,1+0>
            FORMAT/TEXT,OPTIONS, ,HEADINGS,SYMBOLS, ;MEAS, , , , , ,
DIM BURR_MAX= LOCATION OF POINT BURR_PNT_MAX  UNITS=MM ,$
GRAPH=OFF  TEXT=OFF  MULT=50.00  OUTPUT=BOTH  HALF ANGLE=NO
AX       MEAS
X       15.297 ----#---
Y       36.948 ----#---
Z        0.051 ----#---
PR      39.989 ----#---
PA      67.509 ----#---
END OF DIMENSION BURR_MAX
            ASSIGN/V8=MININDEX(PLN_BURR.HIT[1..PLN_BURR.NUMHITS].Z)
            ASSIGN/V9=PLN_BURR.HIT[V8].XYZ
BURR_PNT_MIN=GENERIC/POINT,DEPENDENT,CARTESIAN,$
            NOM/XYZ,<0+0,0+0,0+0>,$
            MEAS/XYZ,<V9.X,V9.Y,V9.Z>,$
            NOM/IJK,<0+0,0+0,1+0>,$
            MEAS/IJK,<0+0,0+0,1+0>
DIM BURR_MIN= LOCATION OF POINT BURR_PNT_MIN  UNITS=MM ,$
GRAPH=OFF  TEXT=OFF  MULT=50.00  OUTPUT=BOTH  HALF ANGLE=NO
AX       MEAS
X       39.650 ----#---
Y       -5.227 ---#----
Z       -0.048 ---#----
PR      39.993 ----#---
PA      -7.509 ---#----
END OF DIMENSION BURR_MIN

Then report out your Z measurements into your CSV. Optional: You can report out the location of the max and min points as well!

[RandomJerk]

Similar to above, but an alternative if you only care about what the z values are, not necessarily where they are is:

PLN1       =FEAT/CONTACT/PLANE/DEFAULT,CARTESIAN,OUTLINE,LEAST_SQR
            THEO/<0,0,30>,<0,0,1>
            ACTL/<0,0,30>,<0,0,1>
            TARG/<0,0,30>,<0,0,1>
            ANGLE VEC=<0.7071068,-0.7071068,0>,RADIAL
            SHOW FEATURE PARAMETERS=NO
            SHOW CONTACT PARAMETERS=YES
              NUMHITS=12,NUMRINGS=3
              SPACER=0
              AVOIDANCE MOVE=NO,DISTANCE=10
            SHOW HITS=NO
            ASSIGN/ZVALS=PLN1.HIT[1..PLN1.NUMHITS].Z
            ASSIGN/ZMAX=MAXINDEX(ZVALS)
            ASSIGN/ZMIN=MININDEX(ZVALS)
DIM DIM_1= LOCATION OF POINT PLN1.HIT[ZMIN]  UNITS=MM ,$
GRAPH=OFF  TEXT=OFF  MULT=10.00  OUTPUT=BOTH  HALF ANGLE=NO
AX       MEAS    NOMINAL       +TOL       -TOL        DEV     OUTTOL
Z       30.000     30.000      0.010      0.010      0.000      0.000 ----#----
END OF DIMENSION DIM_1
DIM DIM_2= LOCATION OF POINT PLN1.HIT[ZMAX]  UNITS=MM ,$
GRAPH=OFF  TEXT=OFF  MULT=10.00  OUTPUT=BOTH  HALF ANGLE=NO
AX       MEAS    NOMINAL       +TOL       -TOL        DEV     OUTTOL
Z       30.000     30.000      0.010      0.010      0.000      0.000 ----#----
END OF DIMENSION DIM_2

Or you could add the X and Y (with huge tolerances) to the report. This saves you from creating generic points.

[A-machine-insp]

Could you do what you said except use a constructed scan set from the required points the OP needs to measure?

I could see this as being helpful to me on certain parts but using a constructed scan set instead of an auto plane.

[louisd]

use sortup array for the scan set's z value, then use another assign to extract the first index, and report the value. do the same for the last array index and report the value

[JEFMAN]

ASSIGN/ZMAX=SCN1.HIT[MAXINDEX(SCN1.HIT[1..SCN1.NUMHITS].Z)].XYZ should give directly the coordinates of the hit.
Happy week-end, all !