Annotations

Explains how to add annotations to plots. This includes colorbars, legends, specimen directions and crystal directions.

Annotating Directions, Orientations, Fibres

Colorbars

Unlike the common Matlab command colorbar the MTEX command mtexColorbar allows you to add a colorbar to all subplot in one figure.

% this defines some model ODFs
cs = crystalSymmetry('-3m');
mod1 = orientation.byEuler(30*degree,40*degree,10*degree,cs);
mod2 = orientation.byEuler(10*degree,80*degree,70*degree,cs);
odf = 0.7*unimodalODF(mod1) + 0.3*unimodalODF(mod2);

% plot some pole figurs
plotPDF(odf,Miller({1,0,0},{1,1,1},cs))

% and add a colorbar to each pole figure
mtexColorbar

Executing the command mtexColorbar twice deletes the colorbar. You can also have a horizontal colorbar at the bottom of the figure by setting the option location to southOutside. Further, we can set a title to the colorbar to describe the unit.

% delete vertical colorbar
mtexColorbar

% add horizontal colorbars
mtexColorbar('location','southOutSide','title','mrd')

If color range is set to equal in an MTEX figure only one colorbar is added (see. Color Coding).

mtexColorbar       % delete colorbar
CLim(gcm,'equal'); % set equal color range to all plots
mtexColorbar       % create a new colorbar

Annotating Directions, Orientations, Fibres

Pole figures and inverse pole figures are much better readable if they include specimen or crystal directions. Using the MTEX command annotate one can easily add specimen coordinate axes to a pole figure plot.

annotate(zvector,'label',{'Z'},'BackgroundColor','w')

The command annotate allows also to mark crystal directions in inverse pole figures.

plotIPDF(odf,[xvector,zvector],'antipodal','marginx',10)
mtexColorMap white2black

annotate([Miller(1,0,0,cs),Miller(1,1,0,cs),Miller(0,0,1,cs),Miller(2,-1,0,cs)],...
  'all','labeled','BackgroundColor','w')

One can also mark specific orientations in pole figures or in inverse pole figures.

plotIPDF(odf,[xvector,zvector],'antipodal')
mtexColorMap white2black
annotate(mod1,...
    'marker','s','MarkerSize',6,'MarkerFaceColor','r',...
    'label','A','color','w')

annotate(mod2,...
    'marker','s','MarkerSize',6,'MarkerFaceColor','g',...
    'label','B')

drawNow(gcm,'figSize','normal')

as well as in ODF plots

plot(odf,'sigma')
mtexColorMap white2black
annotate(mod1,...
    'MarkerSize',15,'MarkerEdgeColor','r','MarkerFaceColor','none')

annotate(mod2,...
  'MarkerSize',15,'MarkerEdgeColor','b','MarkerFaceColor','none')

or orientation scatter plots

ori = calcOrientations(odf,200);
scatter(ori);
annotate(mod1,...
  'MarkerSize',10,'MarkerEdgeColor','r','MarkerFaceColor','r')
annotate(mod2,...
  'MarkerSize',10,'MarkerEdgeColor','g','MarkerFaceColor','g')

Legends

If you have multiple data in one plot then it makes sense to add a legend saying which color / symbol correspond to which data set.

The following example compares the Fourier coefficients of the fibre ODF with the Fourier coefficients of an unimodal ODF.

close all
plotFourier(FourierODF(odf,32))
hold all
fodf = fibreODF(Miller(1,0,0,cs),zvector);
plotFourier(FourierODF(fodf,32));
hold off

legend({'Fibre ODF','Unimodal ODF'})

Adding a Spherical Grid

Sometimes it is useful to have a spherical grid in your plot to make the projection easier to understand or if you need to know some angular relationships. For this reason, there is the option grid, which enables the grid and the option grid_res, which allows to specify the spacing of the grid lines.

plotPDF(odf,[Miller(1,0,0,cs),Miller(0,0,1,cs)],'grid','grid_res',15*degree,'antipodal');
mtexColorMap white2black