High Quality Content by WIKIPEDIA articles! trajpar is a system parameter in Pro/ENGINEER that varies from 0 to 1 across the length of a given path. It is used to create complex geometric and non-geometric shapes that vary in dimension along the length of any given path.trajpar derives from the words: trajectory parameter. It is a pseudo-variable as it is controlled not by any mathematical representation, but by the physical representation of a path, i.e. a trajectory.trajpar can be used with various mathematical functions to create alternating, flaring, bowing or sinusoidal protrusions. It is primarily used in conjunction with the variable section sweep command in Pro/ENGINEER but can also remove material if desired.

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