How can I assign a logical state to a led colour

Hi,

I've a logical variable and I create a GUI with a pushbutton as a led

led = uicontrol('Style', 'pushbutton', 'Units', 'normalized', ...
'Position', [0.7 0.7 0.1 0.1], 'Selected', 'off', 'SelectionHighlight', 'on', 'Enable', 'on');

I need to change colour of the led as logical state.

I tried with an "if" and :

set(led, 'CData', cat(3,ones(64),zeros(64,64,2)));

but when logical state changes it doesn't follow the change

[Daniel Shub]

While not an exact duplicate, this is pretty close.

Answer 1

[Ryan G]

Have you tried:

if true 
   set(led,'BackgroundColor',[1 0 0]) %set to red
else
   set(led,'BackgroundColor',[0 1 0]) %set to green
end

[Marco]

I thought about that but...I prefer to use something "directly connected" to the logic state rather to creare a condition according to variable state. I hope you understand. However thanks!

[Image Analyst]

Maybe you can try linkprop() or linkaxes().

[Ryan G]

logicalState = 1;

set(led,'BackgroundColor',[logicalState ~logicalState 0]);

Answer 2

[Image Analyst]

Why not have an axes, and you use image() or imshow() to display an actual photo of an LED, or a computer graphic image of an LED? I think that would look slicker than a colored pushbutton. I didn't even know pushbuttons could be colored - I thought that was a system setting (Control Panel).