Ytukyg

I'm trying to control the properties for subplot's title in a way that is independent of other font properties while using latex as interpreter (I don't think this last part is relevant, but just in case). Here is a sample code:

% Figure handle

fig1 = figure;



% Subplot 1

subplot(2,1,1)

plot(rand(100,1))

xlabel('$x$ label')

ylabel('$y$ label')

title('First subplot')



% Subplot 2

subplot(2,1,2)

plot(rand(100,1))

xlabel('$x$ label')

ylabel('$y$ label')

title('Second subplot')



% Setting global properties

set(findall(fig1,'-property','FontSize'),'FontSize',14)

set(findall(fig1,'-property','Interpreter'),'Interpreter','Latex')

set(findall(fig1,'-property','TickLabelInterpreter'),'TickLabelInterpreter','Latex')

When I do this, I can set the size and interpreter for axis labels, tick labels, and subplot titles. This makes the title to have the same style as those other objects.

Is there a way to control the titles properties independently to make them slightly bigger and bolder, for example, so they are easily distinguishable from axis labels?

The set instruction can be applied to an array of graphic handle, so if you want to modify properties of all your titles, just gather their handles in an array first, then use the set command on the handle array.

So in your example, replace your

% ...

title('First subplot')

% ...

title('Second subplot')

% ...

by:

% ...

ht(1) = title('First subplot')

% ...

ht(2) = title('Second subplot')

% ...

You now have an array of handles ht to your titles. Now to modify them all in one batch, without modifying anything else:

set( ht , 'FontSize',18, 'FontWeight','bold')

Similarly, you could regroup handles of other objects to assign their properties in one go:

% build a collection of xlabel array

hxlabel = [hax(1).XLabel hax(2).XLabel] ;

% Set their label and interpreter all at once

set( hxlabel , 'String' , '$x$ label' , 'Interpreter','Latex' )

This will apply the same xlabel to all the subplot, and set their interpreter to latex at the same time.

The same reasonning can be applied for the ylabel, or any other common property accross many objects.

If you just want to make the titles bigger, you can set it when calling the title command:

title('First subplot', 'FontSize', 14, 'FontWeight', 'bold')

If you want to have more control over the font sizes of the individual objects, you have to store the axis handle (which are created upon creating a subplot):

ax1 = subplot(211)

ax2 = subplot(212)



% set the properties of the title:

ax1.Title.FontSize = 14;



% set the properties of the XAxis:

ax1.XAxis.FontSize = 7;

To see what settings you can change, just call the handle in the command window, which will give you more details:

>> ax1.Title



ans = 



  Text (First subplot) with properties:



                 String: 'First subplot'

               FontSize: 14

             FontWeight: 'bold'

               FontName: 'Helvetica'

                  Color: [0 0 0]

    HorizontalAlignment: 'center'

               Position: [50.0001 1.0139 0]

                  Units: 'data'

If you want to set the properties of the titles in different axes (subplots) in a figure, you could store the axes in a cell array:

ax = {subplot(211), subplot(212)};



plot(ax{1}, rand(100,1));

plot(ax{2}, rand(100,1));



for i=1:numel(ax)

    ax{i}.Title.Fontsize = 14;

end

For what it's worth, I got to solve this by setting the following "global" properties (placed at the end of the example above):

% Setting global properties

set(findall(fig1,'-property','Interpreter'),'Interpreter','latex')

set(findall(fig1,'-property','TickLabelInterpreter'),'TickLabelInterpreter','latex')

set(findall(fig1,'-property','Title'),'FontSize',14)

set(findall(fig1.Children,'-property','TitleFontSizeMultiplier'),'TitleFontSizeMultiplier',1.8)

Few things to note. The property Children.TitleFontSizeMultiplier in the figure handle scales whatever you have as FontSize. However, the specification FontSize cannot be placed before Interpreter, as this seems to lock any further font size specifications.

If you want bold face when using the latex interpreter, you need to specify that directly in the title: title('textbf{First subplot}'). Changing the property Children.TitleFontWeight between normal and bold doesn't seem to have any effect.