matlab多条曲线描点画图平滑曲线
时间: 2023-10-16 13:06:10 浏览: 817
MATLAB提供了多种方法来画多条曲线描点并绘制平滑曲线。一种常用的方法是使用plot函数绘制每条曲线的数据点,然后使用fit或spcrv函数进行曲线的拟合或插值,最后使用plot函数再次绘制平滑曲线。
下面是一个示例代码,展示如何使用MATLAB绘制多条曲线描点和平滑曲线的过程:
```matlab
% 创建数据点
x = linspace(0, 2*pi, 100);
y1 = sin(x);
y2 = cos(x);
y3 = exp(-x);
% 绘制数据点
plot(x, y1, 'o');
hold on;
plot(x, y2, 'o');
plot(x, y3, 'o');
% 拟合或插值曲线
f1 = fit(x', y1', 'smoothingspline');
f2 = fit(x', y2', 'smoothingspline');
f3 = fit(x', y3', 'smoothingspline');
% 绘制平滑曲线
plot(f1);
plot(f2);
plot(f3);
% 添加标题、轴标签等
title('Multiple Smooth Curves');
xlabel('x');
ylabel('y');
% 显示图例
legend('y = sin(x)', 'y = cos(x)', 'y = exp(-x)', 'Location', 'best');
% 清除图形窗口
hold off;
```
阅读全文
相关推荐















