Diff for "EMAN2/TransformConventions"

Differences between revisions 1 and 6 (spanning 5 versions)

Transformations in the context of projections, reconstructions, and in general

Transforming an EMData object

An EMData object may be transformed using the following syntax

   1 e = EMData("mydata.hdf")
   2 t = Transform3D(EULER_EMAN,10,23,0) # three angles in the EMAN convention are az=10,alt=23,phi=0. 
   3 # The convention may also be EULER_SPIDER, EULER_IMAGIC, EULER_MRC, EULER_SPIN, EULER_XYZ
   4 t.set_pretrans(1,1,1)
   5 t.set_postrans(2,2,2)
   6 e.rotate_translate(t)

This next section will look better once we get mathml working

A pixel given at coordinate vector v = [x,y,z]^T will be transformed using the following"

vhat = T_post R T_pre v

Where the rotation matrix R is as defined in Baldwin and Penczek 2007.

-  ⇤ ← Revision 1 as of 2008-08-14 21:08:55 → 
  Size: 148
  Editor: DavidWoolford
  Comment:
+   ← Revision 6 as of 2008-08-14 22:33:42 → ⇥
  Size: 829
  Editor: DavidWoolford
  Comment:
-Deletions are marked like this.
+Additions are marked like this.
 Line 1:
-== Transforms in the context of Projections, Reconstructions, and in General ==
+== Transformations in the context of projections, reconstructions, and in general ==
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-=== Transforming an EMData Object ===
+=== Transforming an EMData object ===
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-When an EMData object
+An EMData object may be transformed using the following syntax

{{{#!python
e = EMData("mydata.hdf")
t = Transform3D(EULER_EMAN,10,23,0) # three angles in the EMAN convention are az=10,alt=23,phi=0. 
# The convention may also be EULER_SPIDER, EULER_IMAGIC, EULER_MRC, EULER_SPIN, EULER_XYZ
t.set_pretrans(1,1,1)
t.set_postrans(2,2,2)
e.rotate_translate(t)
}}}

This next section will look better once we get mathml working

A pixel given at coordinate vector v = [x,y,z]^T will be transformed using the following"

vhat = T_post R T_pre v

Where the rotation matrix R is as defined in Baldwin and Penczek 2007.


=== Transforms and Euler Angles in the context of Projections ===