How to improve the title appearance?

Hi, I'd like to improve a bit the general aspect of my graphs, but I don't know much about it. For example, in the following graph:

I don't want to change the size of the picture, but I'd like that the "x 10^6" not to overlap with the title of the graph. A solution that I found was to write the title in the area immediately below the top margin, using

title(['Performance = ' num2str( round(improve,2) ) ' \%'],'interpreter',...
'latex', 'Units', 'normalized', 'Position', [0.5, 0.85, 0])

However, it sometimes overlap with the graph.

Also, I'd like the title to be boxed in a rectangular gray area. Is this possible?

[Walter Roberson]

MATLAB version matters for this purpose.

[Jan]

What do you want to happen instead? Where should the information about the 10^6 appear? Currently the diagram does not contain units, such that it looks inappropriate for a scientific publication. So why not dividing the data by 10^6 and defining the units in the Y-label?

[Maria445]

@Walter, I have Matlab 2017a.

@Jan, you're right, it would be better. I'll think about a way to automate your suggestion, as I'm running a loop, and each time it runs it produces different graphs, with a different order of magnitude on the Y-axis

Answer 1

[Jan]

text(0.5, 0.99, ['Performance = ' num2str( round(improve,2) ) ' \%'], ...
     'Units', 'normalized', ...
     'interpreter', 'latex', ...
     'VerticalAlignment', 'top', ...
     'BackgroundColor', [0.5,0.5,0.5]);

Instead of estimating the vertical position as 0.85, it is smarter to align the text vertically with "top".

[Maria445]

Thank you so much, that is exactly what I wanted!