How to construct circles with different math methods from hit points data?

Happy Friday! Can not wait to watch my boy play Hockey game tomorrow afternoon.

From other threads, I knew we can construct features from points data with different math methods.
The core manual is perfect, but I could not help try right away.

I had a circle C1 now, since I could not construct circle with F9, so constructed a circle with other points and replaced with hit data, but it did not work well.
Can we type those construct command ? And how to work on with hit data for those?

Thank you for any help

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RobOntario over 1 year ago

Better off using a closed scan then using those points to construct your various circles.

SC_B1 =FEAT/SCAN,LINEARCLOSE,NUMBER OF HITS=103,SHOW HITS=NO,SHOWALLPARAMS=NO
MEAS/SCAN
BASICSCAN/LINE,NUMBER OF HITS=103,SHOW HITS=NO,SHOWALLPARAMS=NO
ENDSCAN
ENDMEAS/
CIRCLE1 =FEAT/CIRCLE,CARTESIAN,OUT,LEAST_SQR,NO
THEO/<-0.0005,0,-8>,<0,0,1>,8.235
ACTL/<-0.0005,0,458.5778>,<0,0,1>,8.235
CONSTR/CIRCLE,BF,2D,SC_B1.HIT[1..SC_B1.NUMHITS],,
OUTLIER_REMOVAL/OFF,3
FILTER/OFF,UPR=0
CIRCLE1 =FEAT/CIRCLE,CARTESIAN,OUT,MAX_INSC,NO
THEO/<-0.0005,0,-8>,<0,0,1>,8.235
ACTL/<-0.0005,0,458.5778>,<0,0,1>,8.235
CONSTR/CIRCLE,BF,2D,SC_B1.HIT[1..SC_B1.NUMHITS],,
OUTLIER_REMOVAL/OFF,3
FILTER/OFF,UPR=0

Thank you so much.

But How can we input those? :

CIRCLE1 =FEAT/CIRCLE,CARTESIAN,OUT,LEAST_SQR,NO
THEO/<-0.0005,0,-8>,<0,0,1>,8.235
ACTL/<-0.0005,0,458.5778>,<0,0,1>,8.235
CONSTR/CIRCLE,BF,2D,SC_B1.HIT[1..SC_B1.NUMHITS],,
OUTLIER_REMOVAL/OFF,3
FILTER/OFF,UPR=0
?

dwade over 1 year ago in reply to RobOntario

Neil, I want to question this "the construction method to BFRE (you should always use BFRE when constructing features from existing hit data)" because I have seen no difference in the reported results between BF and BFRE. I have been told over the years to always use BFRE for existing data but have forgotten to toggle to it and when I did saw nothing different in the reported results. I scan ID/OD features a lot and use the scan data for constructing planes/lines/circles/cylinders and have played with BF and BFRE and not seen a difference.
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dwade over 1 year ago in reply to RobOntario

Neil, I want to question this "the construction method to BFRE (you should always use BFRE when constructing features from existing hit data)" because I have seen no difference in the reported results between BF and BFRE. I have been told over the years to always use BFRE for existing data but have forgotten to toggle to it and when I did saw nothing different in the reported results. I scan ID/OD features a lot and use the scan data for constructing planes/lines/circles/cylinders and have played with BF and BFRE and not seen a difference.
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