matlab plot 图上显示值

在Matlab中，可以使用`text`函数在plot图上显示值。该函数可以在指定的坐标位置添加文本。示例代码如下：

x = 1:10;       % x轴数据
y = rand(1, 10); % y轴数据

plot(x, y)

for i = 1:length(x)
    text(x(i), y(i), num2str(y(i)), 'HorizontalAlignment','center', 'VerticalAlignment','bottom')
end

上述代码中，`text`函数用于在每个数据点的位置显示y值。`num2str`函数将y值转换为字符串进行显示。`HorizontalAlignment`和`VerticalAlignment`参数用于控制文本的对齐方式。

这样，plot图上的每个数据点都会显示其对应的y值。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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