Is it possible to extend a line which is plotted in one subplot to another subplot in same figure

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Junia Josephine D 2016-2-27

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评论： Walter Roberson 2016-2-29

I need to extend a line which I plot in subplot(2,1,1) to subplot(2,1,2). I have used hough transform to detect the lines in subplot(2,1,1), with the values of the lines (ie points), I am constructing a line which is needed to be extended to subplot(2,1,2)

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回答（1 个）

the cyclist 2016-2-27

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编辑：the cyclist 2016-2-27

在 MATLAB Online 中打开

Yes. You just need to turn off "clipping". Here is an example:

rng 'default'

figure

subplot(2,1,1), plot(rand(3,4).'.')
subplot(2,1,2), plot(rand(3,4).'.')

set(gca,'Clipping','Off')
h = line([1.4 2.6],[0.4 1.8]);
ylim([0 1])
set(h,'LineWidth',2)

A few things to note:

The line is plotted (in this example) in the coordinate system of the bottom subplot, because that is current axes when I create the line.
You can't specify the line with coordinates from both sets of axes (I believe)
I had to specify the ylim of the bottom subplot, so that it would not just automatically resize to accommodate the line.