Matlab画图常用命令

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');