Thanks Alec, I understand your example. Basically I need to expand all the vectors into x, y, z.
It seems that this approach will get more difficult as the task difficulty increases. Maybe it will be easier if I show my problem. I have an observer located at position E (I do not know this position). I have multiple targets located at a positions T1,T2,T3 (or however many I need). Observer looks at targets through a plane located some distance away and given by a point on this plane H (I do not know this point) and a normal N (I do know normal it is parallel to YZ plane). On this plane targets are marked and locations of these markers are known M1, M2, M3 (corresponding to T1, T2, T3). The marker coordinates are given as scaled YZ points relative to H. I can find the 3d position of the points by TintersectionX = (MX * S) + H. S is not known to me. I do know that that TintersectionX belongs to a line between E and TX. I also know that TintersectionX belongs to the plane TintersectionX.dot(N) = H.dot(N). Given that I know TX and MX I would like to find out what S, H, E are. What would be the best way approach this task? Thanks. -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
