Grain selection by orientations

[MaelAllard]

Hi MTex community,

I would like to select groups of grains having a specific crystallographic plane being parallel to the plane of analysis (for example c plane).
I did a beginning of something but got stuck on my way:

% First search for a grains having the wanted orientation
CS=ebsd('Plagioclase').CS
gPlag = grains('Plagioclase');
gMeanOri=gPlag.meanOrientation.round2Miller; % Get grains mean orientations
% condition
Indice_001=find(gMeanOri.hkl(:,1) == 0 & gMeanOri.hkl(:,2) == 0 &...
gMeanOri.hkl(:,3) == 1)

Then, as in the documentation I get back to Euler orientations to select my grains:

% Select one of the grains respecting the condition to get it's Euler orientation
ref_temp = gPlag(Indice_001(1))
% restrict to the orientation of Miller (001) in Euler space
ref_001 = ref_temp.meanOrientation.Euler/degree * Miller(0,0,1,CS,'hkl')
% Finally select the corresponding grains allowing 10° variation around (001)
grains_oriSelect_001 = gPlag.findByOrientation(gPlag(ref_001).meanOrientation,...
10*degree)

And here arise the problem, nothing is different between my to variables grains and grains_oriSelect_001.
I must have done something wrong here but didn't found out where.
Can someone help me please?

Cheers,
Maël

[ralfHielscher]

Hi Mael,

please consider asking questions in the forum :) I guess what you looking for is something like

c_plane = Miller(0,1,1,cs,'hkl'); % your crystal plane
a_plane = vector3d(0,0,1); % your analysis plane normal

delta = 10*degree; % the threshold
condition = angle(grains.meanOrientation \ a_plane, c_plane) > delta;

grains_selected = grains(ind)

All the best,
Ralf.

[MaelAllard]

Hi Ralf,

Thanks a lot for your solution,
My apologies for posting this in the wrong platform!

Cheers,
Maël

[ralfHielscher]

No problem :)