Add a Title for Each Group of Subplots in a Figure Window

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Kareem Elgindy
Kareem Elgindy 2021-2-27
评论： dpb 2021-2-28
Suppose I have 2 rows and 4 columns of subplots in a figure window. How can I add a title for the first row and another title for the second row?
The closest command I could think of is sgtitle, which adds title to subplot grid. I read its help documentation in MATLAB 2020b; however, none of the examples there explains how it is possible to answer my question.

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回答（1 个）

Image Analyst
Image Analyst 2021-2-27
I believe you can use text(). I think it will place text on the figure if you tell it to, instead of the current axes. Try it to see.
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Image Analyst
Image Analyst 2021-2-28
You have complete control over everything if you don't like the defaults. Get a handle to the axes, and then set whatever you want, like the Position property to size and locate the axes.
h1 = subplot(2, 2, 1);
h1.Units = 'normalized'
h1.Position = [0.1, 0.2, 0.4, 0.4] % or whatever.
dpb
dpb 2021-2-28
And, it's not really that complicated, just takes either some trial and error (or more thinking about the geometry and the algebra to generalize than I've got the time/interest to do at the moment to write more general code).
Again from the above starting point just the following
for i=5:6,hAx(i).Position(4)=hAx(i).Position(4)*0.9);end
hTtlAX=text(0.5,0.5*0.96,'New Title Axis Text','HorizontalAlignment','center');
results in
The actual height reduction of 4% off the nominal 50% midpoint of the outside encompassing axes was trial and error. The first line just reduces the height of the two plots above which want to insert the title by 10% of their default height.
Salt to suit...

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