align3d

Rotational and translational alignment of 3d models

align3d checkflip trans refine slow noshrink

Parameters:


checkflipAllow for possible handedness difference between models
transDo a translational alignment at the end. Works better if models are precentered
refineAssumes the models are already within a few degrees of proper alignment
slowFor models that seem to be difficult to align, this will search with a finer angular step
noshrinkNormally the models are scaled down by a factor of 2 for faster alignment. This causes the full sized model to be used.

Usage:

Description

This program will take one 3d model and optimally align it to another 'reference' model. Rotational alignment is performed by testing all possible angles at progressively smaller angular increments. If the initial increment is too large, it may fail for some models. The slow option will reduce the initial increment to try to take care of this problem. Eventually this routine will be rewritten to use rotational cross-correlation.


EMAN Manual page, generated Mon Jan 10 23:35:08 2000