www.gusucode.com > 《matlab图像处理与界面编程宝典》秦襄培 编著,每章的MATLAB源代码程序 > 第4章/代码4-1.txt
x = -pi:pi/10:pi; y = tan(sin(x)) - sin(tan(x)); plot(x,y,'--rs','LineWidth',2,... 'MarkerEdgeColor','k',... 'MarkerFaceColor','g',... 'MarkerSize',10) x = -pi:.1:pi; y = sin(x); plot(x,y) set(gca,'XTick',-pi:pi/2:pi) set(gca,'XTickLabel',{'-pi','-pi/2','0','pi/2','pi'}) xlabel('-\pi \leq \Theta \leq \pi') ylabel('sin(\Theta)') title('Plot of sin(\Theta)') text(-pi/4,sin(-pi/4),'\leftarrow sin(-\pi\div4)',... 'HorizontalAlignment','left') set(findobj(gca,'Type','line','Color',[0 0 1]),... 'Color','red',... 'LineWidth',2)