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How to pull individual points from a scan?

himmel_dustin
Not necessarily min or max points, but more like a sample of 15 points from a 1500 point scan...
  • I don't use scanning very often, but what about adding another scan to just repeat those 15 points you want to evaluate. 15 more hits wouldn't increase your runtime very much and then it would be much easier to analyze and easier to write the code?

    the area of the scan is very small, it's a special sealing surface that absolutely needs the profile reported on it. it's so small that i'm not sure i trust the CMM to start and stop in time and evaluate the surface properly. so i have created a scan that starts about .500 from the start of the surface and stops after it as well. i want to exclude the before and after areas and just concentrate on tevaluating the points taken in the small area.

  • ASSIGN/SCN5S1X=SCN5.HIT[68].X
ASSIGN/SCN5S1Y=SCN5.HIT[68].Y
ASSIGN/SCN5S1Z=SCN5.HIT[68].Z
SCN5S68 =GENERIC/POINT,DEPENDENT,CARTESIAN,$
NOM/XYZ,<0,0,0>,$
MEAS/XYZ,<SCN5S1X,SCN5S1Y,SCN5S1Z>,$
NOM/IJK,<0,0,1>,$
MEAS/IJK,<0,0,1>
DIM X1= LOCATION OF POINT SCN5S68 UNITS=IN ,$
GRAPH=OFF TEXT=OFF MULT=10.00 OUTPUT=BOTH HALF ANGLE=NO
AX NOMINAL +TOL -TOL MEAS DEV OUTTOL
X 0.0000 0.0020 0.0020 1.8380 1.8380 1.8360 -------->
Y 0.0000 0.0020 0.0020 0.0019 0.0019 0.0000 --------#
Z 0.0000 0.0020 0.0020 -10.0057 -10.0057 10.0037 <--------
END OF DIMENSION X1

    why doesn't the nominal show up?

    Just because you didn't defined them Slight smile 

    SCN5S68 =GENERIC/POINT,DEPENDENT,CARTESIAN,$
[COLOR=#FF0000]NOM/XYZ,<SCN5.HIT[68].TX,SCN5.HIT[68].TY,SCN5.HIT[68].TZ>,$[/COLOR]
MEAS/XYZ,<SCN5.HIT[68].X,SCN5.HIT[68].Y,SCN5.HIT[68].Z>,$
NOM/IJK,<SCN5.HIT[68].TI,SCN5.HIT[68].TJ,SCN5.HIT[68].TK>,$
MEAS/IJK,<SCN5.HIT[68].I,SCN5.HIT[68].J,SCN5.HIT[68].K>
  • Look at "construct circle from scan segment" (if your version have it) in the Help. I think that will do what you want. At least your description sounds like it...
  • I’m not sure, but can’t you go into the graphics window and right mouse click on the points and dimension them?
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