Pole Figure Interpretation

[Belt91]

Hi everyone,

I have a few questions regardingthe interpretation of pole figure data derived from EBSD maps. I checked the online manual but I cannot find the anwer to my doubts, so maybe a direct address of the issue might be more useful.

I collected an EBSD map which I plotted with orientations colors referred to the z-vector in specimen coordinates. Here you can see the map ( the color key map si below)

Now, when I plot the orientations with repsect to this color map in the fundamental sector, using the "plotIPDF()" function, I guess I can interpret the plot as showing the oreintation distribution of the pixels with respect to the fundamental sector.

When I use the plotPDF() function, instead, I see a plot in stereographic projection showing a distribution of points for a given set of orientations. These points are colored with the same color key as before, but in this case I am not sure how to interpret these figures and the color meaning. Here I report a couple of examples of pole fogures produced by using either the orientations or the odf.

My questions ( for now) are:

What is the position of each point on the pole figures related to, or in other words, what do the pole figures tell me?
What is the meaning of the color on the pole figures calculated with the orientations input?
Which is the connection (if any) between the plotPDF(odf, m) and plotPDF(phase.orientations, m) information?

Thanks in advance to anyone who will find the time to consider these points!

Best,

Marco