How to plot EBSD Data in terms of RD and TD?

[Mike S.]

Hi all,

i would like to plot and colorize my EBSD data in terms of TD and RD, and not only in ND direction. I am not sure, but what i tried so far is to change the oM.inversePoleFigureDirection and then plot the dataset with this colorcoding.

oM.inversePoleFigureDirection = zvector; % for "normal" ND

oM.inversePoleFigureDirection = yvector; % for TD
oM.inversePoleFigureDirection = xvector; % for RD

Is this correct, or do i have to rotate the whole ebsd dataset around 90 degree?

Thanks and best whises,
Mike

[grandr...@gmail.com]

Here's a section from the help document I'm writing up that covers this.  Note that MTEX makes no judgement as to which direction is 'TD' it works in x, y, and z so be careful which way around your axes are.

While the default for colouring a map of the type plot(ebsd('Magnesium'),ebsd('Magnesium').orientations) is IPFZ, this can be changed to another direction

 

%create the ipf sector/shape and color it

oM = ipdfHSVOrientationMapping(ebsd('Magnesium'));

%define the direction of the ipf

oM.inversePoleFigureDirection = yvector;

%convert the ebsd map orientations to a color based on the IPF

color = oM.orientation2color(ebsd('Magnesium').orientations);

%plot the figure using the new colour map

figure; plot(ebsd('Magnesium'),color);

 

 

The first command is only required once per matlab session

 

oM.inversePoleFigureDirection = zvector;

color = oM.orientation2color(ebsd('Magnesium').orientations);

plot(ebsd('Magnesium'),color);

 

oM.inversePoleFigureDirection = xvector;

color = oM.orientation2color(ebsd('Magnesium').orientations);

plot(ebsd('Magnesium'),color);

 

any other vector3d can be used to color the map, some examples of different ways to define them are below.

 

%assign vector using specimen directions

V45 = vector3d(1,-1,0);

oM.inversePoleFigureDirection = V45;

color = oM.orientation2color(ebsd('Magnesium').orientations);

plot(ebsd('Magnesium'),color);

 

%or as a series of spherical coordinates

polar_angle = 60*degree;

azimuth_angle = 45*degree;

v = vector('polar',polar_angle,azimuth_angle);

 

%or as a combination of other vectors

v = xvector + 2*yvector;

 

%and then plot it to confirm the direction

plot([zvector,xvector+yvector+zvector],'labeled')