Pole figures at high point counts

[jhiscocks]

I've noticed an issue with plotPDF at high point numbers. My EBSD data includes a total of 333468 points, and is of the magnesium symmetry

>> CS = grains.CS
 CS = crystalSymmetry (show methods, plot)

  mineral        : Magnesium        
  color          : light blue       
  symmetry       : 6/mmm            
  a, b, c        : 3.2, 3.2, 5.2    
  reference frame: X||a*, Y||b, Z||c)

First I enter my data using the import wizard, and it looks good when I plot it.

Then I define the pole figures I want using

h=[Miller(0,0,1,ebsd('Magnesium').CS), Miller(1,0,0,ebsd('Magnesium').CS)];

and finally I plot the pole figures using

plotPDF(ebsd('Magnesium').orientations,h,'points',10000,'antipodal')

If I plot 8300 points

if I plot 8400 points

if I plot 30 000 points

So it looks like this is something to do with very large point quantities, which is probably only an issue when working with EBSD data.

[ralfHielscher]

I guess you are asking about the markerSize. You can set it explicitly by

plotPDF(ebsd('Magnesium').orientations,h,'points',10000,'MarkerSize',10)

Change the number to adjust the marker size to your needs.

Ralf

[jhiscocks]

That's interesting, if you don't specify a marker size, then with a few points you get small markers, and with many points you get larger markers. Thank you for showing me how to fix this.

Jessica