using struct to plot multiple set of data on multiple figures [figure properties]

So, I'm trying to plot multiple data set on multiple figures and it worked so far after I went through many answers posted on this forum. (thanks, everyone)

Although, When I was trying to add the title for the figure, the following code didn't work:

%% Plot
myFig = struct;
myFig(1).fig = figure(1);
clf(myFig(1).fig);

myFig(2).fig = figure(2);
clf(myFig(2).fig);

myFig(1).ax = axes('Parent', myFig(1).fig, 'NextPlot', 'add');
myFig(2).ax = axes('Parent', myFig(2).fig, 'NextPlot', 'add');

for j = 1:size(selectedData,3)
    
   scatter(selectedData(:,1,j),selectedData(:,4,j),1,'Parent',myFig(1).ax)
   scatter(selectedData(:,1,j),selectedData(:,6,j),1,'Parent',myFig(2).ax)
   
   if j == 1
       hold on
   end
    
end

myFig(1).fig;
title('ABC vs. X')
myFig(2).fig;
title('DEF vs. X')

The result was that in there was no title in Figure 1 and the title for Figure 2 was 'DEF vs. X'.

If I comment out the last 2 lines, 'ABC vs. X' appears on Figure 2, which I thought it supposed to be on Figure 1.

However, when I changed the last 4 line to:

figure(1);
title('ABC vs. X')
figure(2);
title('DEF vs. X')

Everything works as what I want.

My question is why doesn't myFig(1).fig or myFig(1) works when I assigned figure(1) to them in the beginning?

Is there a way to include title using myFig(1).fig instead of figure(1)?

Answer 1

[Matt J]

My question is why doesn't myFig(1).fig or myFig(1) works ?

Neither of these are commands.

Is there a way to include title using myFig(1).fig instead of figure(1)?

The most direct solution:

title(myFig(1).ax,'ABC vs. X')
title(myFig(2).ax,'DEF vs. X')

[yoohooo's]

Thank you very much! And do you know why myFig(1).fig didn't work? I thought it's just the same as figure(1).

[Matt J]

No, figure(1) is a command. It instructs Matlab to create a figure, or to make figure no. 1 current, if it already exists.

myFig(1).fig is just a variable that happens to hold a handle to a figure.

[yoohooo's]

Ahh, thank you very much!

And why .ax instead of .fig? I thought .ax is should be used when I want to add a new plot. And .fig is calling the figure.

[Matt J]

A figure can contain many axes. title() needs to be told which axis in the figure to place the title in.

[yoohooo's]

Thank you very much!