How can I enlarge the height of legend box?

Hi everyone,

I would like to enlarge the legend box size (height), I tried to use [set(hleg1,'position',[x0 y0 width height])]

and [textobj = findobj(hobj1, 'type', 'text');set(textobj, 'Interpreter', 'latex', 'fontsize', 15);] but didn't work..

any help,

Thanks in advance, Riyadh

Answer 1

[Adam Danz]

You need to use the handle to the legend which you create when you call legend(). The height is the 4th value of the Position parameter. Here I set the height to 10.

lh = legend('BlankLegend'); 
lh.Position(4) = 10;

[Riyadh Muttaleb]

I tried but it doesn't work, below exactly what I used, the fourth value changes the height position I don't know Why?

[Adam Danz]

I don't have Matlab available right now but I can speculate. Assuming the units of your legend is normalized, I'd bet that .05 is not tall enough or wide enough given the amount of material in your legend. So instead of resizing it to .05 width and height, it uses the minimum dimensions that fit your text. Try increasing those numbers and see if it resizes. If it's the Box you're worried about, you could always just turn that off.

legend('boxoff')

[Riyadh Muttaleb]

Thank you for the response but I don't want to box off

[Adam Danz]

Have you tried increasing the height? If your units are normalized, then 0.05 is probably too small.

[Riyadh Muttaleb]

I attached the differences between the height (0.05 and 0.1)

</matlabcentral/answers/uploaded_files/133941/legend_0.05_0.1.JPG> >>

[Riyadh Muttaleb]

[Adam Danz]

Just to completely rule out that idea, try something large, like 0.5 (half of your figure) which should make it gigantic. Also confirm the units are normalized.

legendHandle.units

[Riyadh Muttaleb]

I got"Undefined variable "legendHandle" or class "legendHandle.units".

[Riyadh Muttaleb]

this is 0.2

[Riyadh Muttaleb]

Is there any method to make the legend text in the center? I think the text centering will solve my problem.

[Adam Danz]

I made up the name legenHandle - you are supposed to substitute that with your variable name that stores the legend handle.

So I think my hunch is correct. 0.05 and 0.1 are both too small to fit your legend text so the code is ignoring your requesting and fitting the legend to the text. 0.2 is too big. So if you keep playing around with it, you'll find the right size.

There are lots and lots of legend properties you can use to control the appearance of your legend. Try changing the number of columns, for example.

https://www.mathworks.com/help/matlab/ref/matlab.graphics.illustration.legend-properties.html#bt7bgi4-1-NumColumns