How to change the font size of a plot's title and axis labels and save it?

问题

Every time I save a plot picture as jpg or png, font size of title and axis label is changed back to default automatically. My code is like this:

figure
plot(x, f(x))
title('the smallest n = 1', 'FontSize', 24);
xlabel('x', 'FontSize', 24);
ylabel('x''', 'FontSize', 24);

After saving the picture, those font sizes become small again. Anyone knows why?

回答1:

Because it just applies for the current figure.

If you want to set the same font size for the whole session, use:

set(0,'defaultAxesFontSize', 12);

If you want that permanently, put it in your start-up file.

---

By the way, as you can see here you can build every "default property" you wish by concatenating default + class name + property.

回答2:

I found that "print" command can solve this problem.

fig = figure;
plot(x, f(x));
title('the smallest n = 1', 'FontSize', 24);
xlabel('x', 'FontSize', 24);
ylabel('x''', 'FontSize', 24);
print(fig, 'PicName', '-dpng');

The third argument is to specify the format. In my case, I would like to save it to png file.

The font size would remain the values I set now.

回答3:

Please try and use the following,

title(['\fontsize{16}black {\color{magenta}magenta '...
'\color[rgb]{0 .5 .5}teal \color{red}red} black again'])

It works for sure

来源：https://stackoverflow.com/questions/32655332/how-to-change-the-font-size-of-a-plots-title-and-axis-labels-and-save-it