Diameter at distance

I have tried everything so get some consistent results, This is what calypso does to make this happen and would like to try and replicate it best I can to see if it works. It takes 26 vertical scans then makes and offset plane at the desired distance and makes a intersect point to each scan then makes a circle. I cant get pc-dmis to make the intersect point right where the plane meets the scan I makes me a point where the centroid of the scan would meet the plane so its way past the scan. I have tried vector points at the same height and distance and advance scans turn them into circles and noting is remotely close to the results that calypso gets. Thats why I'm trying this method.

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Neil Challinor over 1 year ago

Construct a curve from each scan and then intersect the curves with the plane to create the points.
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R2ah1ze1l over 1 year ago

Instead of intersection, have you selected pierce to see if it gave the correct values? Additionally, and typically with curves, the order of selection can modify the point creation, in this case I think you want to select the scan line/curve first then the plane.
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Mike Rivard over 1 year ago in reply to Neil Challinor

Looks like this works...but I think I'm going to be getting the same results as before. Will keep this updated.
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JEFMAN over 1 year ago

You could also search the two closest hits from the plane :

ASSIGN/V1=ABS(DOT(SCN1.HIT[1..SCN1.NUMHITS].XYZ-PL1.XYZ,PL1.IJK))..............................pos itive distances between hits and plane
ASSIGN/V2=MININDICES(V1)................................. .................................................. .........................sort indices of distance from the smallest to the largest
ASSIGN/V3=UNIT(SCN1.HIT[V2[2]].XYZ-SCN1.HIT[V2[1]].XYZ)............................................. ..........vector between both closest hits (should be on each side of the plane)
ASSIGN/V4=DEG2RAD(ACOS(DOT(V3,PL1.IJK)).................. .................................................. .........angle between vector and vector plane
ASSIGN/V5=DOT(SCN1.HIT[V2[1]].XYZ-PL1.XYZ,PL1.IJK).................................. ............................distance between closest hit and plane
ASSIGN/V6=SCN1.HIT[V2[1]].XYZ+V5/COS(V4)*V3........................................ .................................coordinates of intersect point
F1 = GENERIC/POINT,DEPENDENT,CARTESIAN,$
NOM/XYZ,<V6.X,V6.Y,V6.Z>,$
MEAS/XYZ,<V6.X,V6.Y,V6.Z)>,$
NOM/IJK,<V3.I,V3.J,V3.K>,$
MEAS/IJK,<V3.I,V3.J,V3.K>,$