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How can I set the default text size on figures in matlab 2018?

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Anders Resell
Anders Resell on 27 Feb 2021
Commented: Jan on 2 Mar 2021
I have tried commands such as and set(gca,'FontSize',15) and set(gca,'DefaultTextFontSize',15), but these don't seem to be working well for me.

Answers (1)

Jan
Jan on 27 Feb 2021
Edited: Jan on 27 Feb 2021
The default of an axes works exactly as you have defined it:
figure; axes;
set(gca, 'DefaultTextFontSize', 35)
text(0.5, 0.5, 'Hello')
The default of a figure:
figure('DefaultTextFontSize', 35);
axes;
text(0.5, 0.5, 'hello')
The default of all figures:
set(groot, 'DefaultTextFontSize', 35);
figure; axes;
text(0.5, 0.5, 'hello')
So the actual problem is hidden in:
"but these don't seem to be working well for me."
Please explain, why you are not satisfied with these working methods. Perhaps you do not want to modify the default text font size, but the size of the axes lables or tick marks?
  2 Comments
Jan
Jan on 2 Mar 2021
What exactly are "figure titles"?
I've showed you how to change the defaults for the text font size. The method for changing other defaults is equivalent, e.g. the font size used for axes labels:
figure('DefaultAxesFontSize', 35);
plot(1:10)
For a list of possible settings see:
set(groot, 'Factory')
Replace the "factory" in the names by "Default". It would be a really bad idea to modify the proerpties of groot, but prefer to apply your defaults only to figures, opened by your software. Otherwise Matlab's built-in tools might produce corrputed GUIs.

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