在MATLAB中，如何清除绘制在图形上的最后一件事? [英] In MATLAB, how does one clear the last thing plotted to a figure?

问题描述

在MATLAB中，我将许多不同的向量绘制到一个图形上.现在，我想做的就是简单地撤消绘制到该图的 last 向量，而不清除其他所有内容.如何做到这一点?能做到吗?

In MATLAB, I plot many different vectors to a figure. Now, what I would like to do is simply undo the last vector that I plotted to that figure, without clearing everything else. How can this be accomplished? Can it be accomplished?

谢谢

figure(1); clf(1);
N = 100;
x = randn(1,N);
y = randn(1,N);
z = sin(1:N);
plot(x); hold on;
plot(y,'r');
plot(z,'k'); 

现在，在这里，我想删除绘图z，这是我制作的最后一个绘图.

Now here, I would like to remove the plot z, which was the last plot I made.

推荐答案

如果在打印之前知道要稍后再次删除它，则可以保存plot返回的句柄，然后delete返回. >

If you know before plotting that you want to remove it again later, you can save the handle returned by plot and delete it afterwards.

figure;
h1 = plot([0 1 2], [3 4 5]);
delete(h1);

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