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ebsd_fraction_hab.m
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ebsd_fraction_hab.m
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function [grains] = ebsd_fraction_hab(grains, varargin)
% EBSD_FRACTION_HAB Calculate the fraction of each grain's boundary that
% has a given high angle misorientation to its surrounding grains.
%
% Input
% grains - @grains2d object
%
% Options
% hab - double, lower bound for a high angle boundary (HAB) in
% degrees. Default is 15 degrees.
% to_plot - bool, if 1 (default), show plot of fraction of HAB.
%
% Returns
% grains - New @grains2d object, containing only indexed grains, with a Xhab
% property.
%
% Created by Håkon Wiik Ånes ([email protected]), 2019-05-02.
% Set default values
hab = 15;
to_plot = 1;
% Override default values if passed to function
if check_option(varargin, 'hab')
hab = get_option(varargin, 'hab');
end
if check_option(varargin, 'to_plot')
to_plot = get_option(varargin, 'to_plot');
end
% Get fraction of HAB for each grain
h = waitbar(0, 'Calculating fraction of HAB around each grain');
grain_ids = grains('indexed').id;
numGrains = length(grains('indexed'));
for i = 1:numGrains
waitbar(i/numGrains)
id = grain_ids(i);
% Create logical vector
try
isHAB = grains(id).boundary('indexed', 'indexed').misorientation...
.angle./degree > hab;
% Create new property of HAB fraction (nnz = number of non-zero)
grains(id).prop.Xhab = nnz(isHAB)/length(isHAB);
catch ME
fprintf('Grain %i is not here!\n', id);
end
end
close(h)
% Plot fraction HAB
if to_plot
% Separate LABs and HABs
gb = grains('indexed').boundary('indexed', 'indexed');
mAngles = gb.misorientation.angle./degree;
maxmori = max(mAngles);
minmori = round(min(mAngles), 1);
[~, ~, gbid] = histcounts(mAngles, 'NumBins', 2, 'BinEdges',...
[minmori hab maxmori]);
figure
plot(grains('indexed'), grains('indexed').Xhab)
hold on
plot(gb(gbid==1), 'linecolor', [0.5 0.5 0.5], 'linewidth', 1)
plot(gb(gbid==2), 'linecolor', [0 0 0], 'linewidth', 1)
plot(grains('notindexed'), grains('notindexed').GOS,'facecolor','k')
mtexColorbar('title', 'Fraction HAB, Xhab')
hold off
end
end