matlab子图使用一个图例
时间: 2023-11-29 16:49:18 浏览: 163
在Matlab中,如果想在子图中使用一个图例,可以使用以下方法。首先,创建一个坐标轴对象,并将其设置为不可见。然后,在该坐标轴对象上添加图例。具体步骤如下:
1. 创建子图并绘制图形:
```matlab
subplot(2,1,1); % 创建第一个子图
plot(x1, y1); % 绘制第一个图形
hold on;
plot(x2, y2); % 绘制第二个图形
grid on;
```
2. 创建坐标轴对象并设置为不可见:
```matlab
subplot(2,1,2); % 创建第二个子图
ax = axes('position', get(gca, 'position'), 'visible', 'off'); % 创建坐标轴对象,并设置为不可见
```
3. 在坐标轴对象上添加图例:
```matlab
legend(ax, \[l1, l2\], 'Label1', 'Label2', 'FontSize', 12, 'Location', 'northeast'); % 在坐标轴对象上添加图例
```
这样,你就可以在子图中使用一个图例了。注意,`l1`和`l2`是你在绘制图形时返回的句柄,用于指定图例中每个图形的标签。
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