1.设置标题
figure;
set(gcf,'Name','csdn');
2.设置坐标轴范围
figure;
axis([0 inf -10 10]); %前两个值为x轴,后面的为y轴
3.设置坐标轴范围及步长
figure;
set(gca,'ytick',-10:1:10); %设置y轴,x轴同理
4.多次在同一图像上画图
在每次figure或plot后使用
hold on;
5.添加图例
h1 = plot(...,'*k');
h2 = plot(...,'*r');
h3 = plot(...,'*g');
h4 = plot(...,'*b');
legend([h1,h2,h3,h4],'黑星','红星','绿星','蓝星',...
'Location','westoutside','Orientation','vertical');