tuxiangchuli3_图像处理_源码

%% x = [1 2 5 4 8]; y = [x;1:5]; barh(y,'stacked'); title('Exercise: stack the horizontal bar chart'); %% a = [10 5 20 30]; pie3(a,[1 1 1 1]); title('Exercise: separate all the pieces in the pie chart') %% theta = linspace(0, 2*pi, 7); r = ones(1,length(theta)); polar(theta,r); title('Exercise: plot a hexagon（六边形） on a polar chart') %% t=linspace(0,10,50);f=sin((pi*t.^2)/4); hold on; plot(t,f,'b'); stem(t,f,'color','r'); yticks([-1 -0.5 0 0.5 1]); hold off; %% t =(0:3)'*pi/2; x = sin(t); y = cos(t); fill(x,y,'y','linewidth',5); axis square off; text(0,0,'WAIT','Color', 'k', 'FontSize', 70,... 'FontWeight','bold','fontname','AMGDT',... 'HorizontalAlignment', 'center'); %% G = [46 38 29 24 13]; S = [29 27 17 26 8];B = [29 23 19 32 7]; h = bar(1:5, [G' S' B']); title('Medal count for top 5 countries in 2012 Olympics'); ylabel('Number of medals'); xlabel('Country'); legend('Gold', 'Silver', 'Bronze') set(gca,'XTickLabel',{'USA','CHN','GBR','RUS','KOR'}); set(h(1),'facecolor',[1 0.8 0.2]); set(h(2),'facecolor',[0.8 0.8 0.8]);set(h(3),'facecolor',[0.8 0.4 0]); %% x = -3.5:0.2:3.5; y = -3.5:0.2:3.5; [X,Y] = meshgrid(x,y); Z = X.*exp(-X.^2-Y.^2); [C,h] = contourf(Z,[-.45:.05:.45]); clabel(C,h); axis square;