MATLAB Examples

This is an example of creating area charts, bar charts, and pie charts with some annotation in MATLAB®.

Read about the fill, bar, text, and pie functions in the MATLAB documentation.

For more examples, go to MATLAB Plot Gallery

% Set up data t = 0:0.01:2*pi; x1 = -pi/2:0.01:pi/2; x2 = -pi/2:0.01:pi/2; y1 = sin(2*x1); y2 = 0.5*tan(0.8*x2); y3 = -0.7*tan(0.8*x2); rho = 1 + 0.5*sin(7*t).*cos(3*t); x = rho.*cos(t); y = rho.*sin(t); % Create the left plot (filled plots, errorbars, texts) figure subplot(121) hold on h(1) = fill(x, y, [0 .7 .7]); set(h(1), 'EdgeColor', 'none') h(2) = fill([x1, x2(end:-1:1)], [y1, y2(end:-1:1)], [.8 .8 .6]); set(h(2), 'EdgeColor', 'none') h(3) = line(x1, y1, 'LineWidth', 1.5, 'LineStyle', ':'); h(4) = line(x2, y2, 'Linewidth', 1.5, 'LineStyle', '--', 'Color', 'red'); h(5) = line(x2, y3, 'Linewidth', 1.5, 'LineStyle', '-.', 'Color', [0 .5 0]); % Create error bars err = abs(y2-y1); hh = errorbar(x2(1:15:end), y3(1:15:end), err(1:15:end), 'r'); h(6) = hh(1); % Create annotations text(x2(15), y3(15), '\leftarrow \psi = -.7tan(.8\theta)', ... 'FontWeight', 'bold', 'FontName', 'times-roman', ... 'Color', [0 0.5 0], 'FontAngle', 'italic') text(x2(10), y2(10),'\leftarrow \psi = .5tan(.8\theta)', ... 'FontWeight', 'bold', 'FontName', 'times-roman',... 'Color', 'red', 'FontAngle', 'italic') text(0, -1.65, 'Text box', 'EdgeColor', [.3 0 .3], ... 'HorizontalAlignment', 'center', ... 'VerticalAlignment', 'middle', 'LineStyle', ':', ... 'FontName', 'palatino', 'Margin', 4, 'BackgroundColor', [.8 .8 1], ... 'LineWidth', 1) % Adjust axes properties axis equal set(gca, 'Box', 'on', 'LineWidth', 1, 'Layer', 'top', ... 'XMinorTick', 'on', 'YMinorTick', 'on', 'XGrid', 'off', 'YGrid', 'on', ... 'TickDir', 'out', 'TickLength', [.015 .015], 'XLim', x1([1,end]),... 'FontName', 'avantgarde', 'FontSize', 10, 'FontWeight', 'normal', ... 'FontAngle', 'italic') xlabel('theta (\theta)', 'FontName', 'bookman', 'FontSize', 12, ... 'FontWeight', 'bold') ylabel('value(\Psi)', 'FontName', 'helvetica', 'FontSize', 12, ... 'FontWeight', 'bold', 'FontAngle', 'normal') title('Cool Plot', 'FontName','palatino', 'FontSize', 18, ... 'FontWeight', 'bold', 'FontAngle', 'italic', 'Color', [.3 .3 0]) legh = legend(h, 'blob', 'diff', 'sin(2\theta)', 'tan', 'tan2', 'error'); set(legh, 'FontName', 'helvetica', 'FontSize', 8, 'FontAngle', 'italic') % Create the upper right plot (bar chart) subplot(222) bar(rand(10,5), 'stacked') set(gca, 'Box', 'on', 'LineWidth', .5, 'Layer', 'top', ... 'XMinorTick', 'on', 'YMinorTick', 'on', 'XGrid', 'on', 'YGrid', 'on', ... 'TickDir', 'in', 'TickLength', [.015 .015], 'XLim', [0 11], ... 'FontName', 'helvetica', 'FontSize', 8, 'FontWeight', 'normal', ... 'YAxisLocation', 'right') xlabel('bins', 'FontName', 'avantgarde', 'FontSize', 10, ... 'FontWeight', 'normal') yH = ylabel('y val (\xi)', 'FontName', 'bookman', 'FontSize', 10, ... 'FontWeight', 'normal'); set(yH, 'Rotation', -90, 'VerticalAlignment', 'bottom') title('Bar Graph', 'FontName', 'times-roman', 'FontSize', 12, ... 'FontWeight', 'bold', 'Color', [0 .7 .7]) % Create the bottom right plot (pie chart) subplot(224) pie([2 4 3 5], {'North', 'South', 'East', 'West'}) tP = get(get(gca, 'Title'), 'Position'); set(get(gca, 'Title'), 'Position', [tP(1), 1.2, tP(3)]) title('Pie Chart', 'FontName', 'avantgarde', 'FontSize', 12, ... 'FontWeight', 'bold', 'FontAngle', 'italic', 'Color', [.7 0 .7]) th = findobj(gca, 'Type', 'text'); set(th, 'FontName', 'bookman', 'FontWeight', 'bold', 'FontAngle', 'italic')