MATLAB实例：绘制条形图
作者：凯鲁嘎吉 - 博客园 http://www.cnblogs.com/kailugaji/
用MATLAB绘制条形图，自定义条形图的颜色、图例位置、横坐标名称、显示条形图上面的数字，并保存图片到指定位置。
1. demo.m
clear
clc
Y=[0.6 0.7 0.75
0.9 0.91 0.92
0.9 0.92 0.95
0.84 0.86 0.87];
figure
X=1:4;
h=bar(X,Y);
% 设置条形图颜色
set(h(1),\'FaceColor\',[1,1,0])
set(h(2),\'FaceColor\',[0,0.9,0.3])
set(h(3),\'FaceColor\',[1,0,0.3])
ylim([0,1]);
ylabel(\'Accuracy\');
xlabel(\'Datasets\');
legend(\'Method 1\',\'Method 2\',\'Method 3\', \'FontSize\',8,\'FontName\',\'Times New Roman\', \'Location\', \'northwest\'); %修改图例
set(gca,\'xtick\',1:4);
set(gca,\'XTickLabel\',{\'dataset 1\',\'dataset 2\',\'dataset 3\',\'dataset 4\'},\'FontSize\',12,\'FontName\',\'Times New Roman\'); %修改横坐标名称、字体
Y_1=roundn(Y,-2);
for i = 1:length(X)
text(X(i)-0.25,Y_1(i,1),num2str(Y_1(i,1)),\'HorizontalAlignment\',\'center\',\'VerticalAlignment\',\'bottom\',\'FontSize\',8,\'FontName\',\'Times New Roman\');
text(X(i),Y_1(i,2),num2str(Y_1(i,2)),\'HorizontalAlignment\',\'center\',\'VerticalAlignment\',\'bottom\',\'FontSize\',8,\'FontName\',\'Times New Roman\');
text(X(i)+0.25,Y_1(i,3),num2str(Y_1(i,3)),\'HorizontalAlignment\',\'center\',\'VerticalAlignment\',\'bottom\',\'FontSize\',8,\'FontName\',\'Times New Roman\');
end
saveas(gcf,sprintf(\'条形图.jpg\'),\'bmp\'); %保存图片
2. 结果
折线图作图见：MATLAB作图
