You can do this:
data = 0.1 * rand(1, 1000); % Create sample data.
edges = linspace(0, 1, 21); % Create 20 bins.
% Plot the histogram.
histogram(data, 'BinEdges',edges);
% Fancy up the graph.
grid on;
xlim([0, 1]);
xlabel('Data Value', 'FontSize', 14);
ylabel('Bin Count', 'FontSize', 14);
title('Histogram of Data', 'FontSize', 14);
Of course you will have only 2 bins for your data to fall into, so I don't know if that's what you want.
