Misorientation Axes in Specimen reference frame

[zmichels]

Hello Ralf and others,

This is probably an ignorant question, and hopefully has a simple answer. I am uncertain about how to plot the axes of misorientations relative to the principal directions of the specimen/acquisition reference frame.... rather than the crystal reference frame. I am probably missing something quite basic.

Here is an example:

>> mori = calcMisorientation(ebsd('Olivine'))

mori = misorientation (show methods, plot)
  size: 97907 x 1
  crystal symmetry : Olivine (mmm)
  crystal symmetry : Olivine (mmm)

The following plotting commands all seem to visualize the misorientation data relative to the crystallographic directions:

>> plotAxisDistribution(mori,'smooth')

>> plot(axis(mori),'antipodal','lower','smooth')

How can I plot the axes of the misorientations relative to the specimen reference frame (i.e., a lower hemisphere plot of the misorientation axes that is orientated relative to the xvector, yvector, zvector specimen directions)?

Any help is greatly appreciated.

Thank you, Zach

---

For context... here are some other plots

plotPDF of mori data:

>> plotPDF(mori,ph,'antipodal','lower','complete','smooth')

ODF for the sample (a mantle xenolith; sample surface cut randomly relative to any mesoscopic fabric):

[ralfHielscher]

Hi Zach,

given a misorientation it is impossible to retrieve the misorientation axis in specimen coordinates. To compute this axis we need a pair of orientations. A list of such pairs of orientations can be computed by the command

[ori1,ori2] = calcMisorientation(ebsd('Olivine'))

Not the misorientation axis in specimen coordinates is computed by

a = axis(ori1,ori2)

You can plot the axes now by

plot(a,'contourf')

In the next version of MTEX 4.2 you can do this directly with plotAxisDistribution.

Ralf.

[zmichels]

Ralf,

Thank you much!

best, Zach