|
Size: 281
Comment:
|
← Revision 9 as of 2012-01-24 21:36:46 ⇥
Size: 1041
Comment:
|
| Deletions are marked like this. | Additions are marked like this. |
| Line 7: | Line 7: |
| * ''--orientgen=eman:delta=2.0:inc_mirror=0'' | * ''eman:delta=2.0:inc_mirror=0'' Note that the ''perturb'' option is on by default in the eman orientation generator, to reduce noise bias problems. To get a RANDOM ORIENTATION __within a python script__ with three random values (one for each EULER ANGLE, from positions on "the sphere"), do the following: {{{ rand_orient = OrientGens.get("rand",{"n":1}) #Fetches the orientation generator c1_sym = Symmetries.get("c1") #Generates the asymmetric unit from which you wish #to generate a random orientation rt = rand_orient.gen_orientations(c1_sym)[0] #Generates a random orientation (a Transform object) #using the generator and asymmetric unit specified }}} |
OrientGens
To get a current list of available orientation generators, please run e2help.py orientgens or for more detail, e2help.py orientgens -v 2.
A typical orientation generator looks like this:
eman:delta=2.0:inc_mirror=0
Note that the perturb option is on by default in the eman orientation generator, to reduce noise bias problems.
To get a RANDOM ORIENTATION within a python script with three random values (one for each EULER ANGLE, from positions on "the sphere"), do the following:
rand_orient = OrientGens.get("rand",{"n":1}) #Fetches the orientation generator
c1_sym = Symmetries.get("c1") #Generates the asymmetric unit from which you wish
#to generate a random orientation
rt = rand_orient.gen_orientations(c1_sym)[0] #Generates a random orientation (a Transform object)
#using the generator and asymmetric unit specified