vector1 vector2 vector3 vector4 h = 1.2345 h = 1.2212 h = 1.2065 h 1.3423 x1 = 0.8654 y1 = 0.7525 z1 = 1.3254 x3 0.5746 x2 = 0.8642 y2 = 0.2458 z2 = 0.9543 y1 0.3584 x3 = 0.5548 y3 = 0.4685 z3 = 0.4685 y4 0.7566 x4 = 0.3546 y4 = 0.8346 z4 = 0.6752 z3 0.9546 ...... ...... ...... ...... Above are 3 independent vectors, and then vector4 link the previous 3vectors to be vector5 as shown below. May I know is there any package may cope with my problem? vector5 h = ??? x1 = ??? x2 = ??? x3 = ??? x4 = ??? ...... y1 = ??? y2 = ??? y3 = ??? y4 = ??? ...... z1 = ??? z2 = ??? z3 = ??? z4 = ??? ...... -- View this message in context: http://old.nabble.com/cross-entity-equation-tp26241287p26241287.html Sent from the R help mailing list archive at Nabble.com.