How to automatize plot redraw for different initial data?

Hello,

I have a code drawing three different plots in one figure, consisting of three for loops, for some set initial data. The initial data is initialized at the beginning of the section. I would like to, for each time I hit the space key for example, redo the whole segment but change the initial data.

I was thinking about another for loop outside the inner threes but this feels like looking for trouble. I have been looking at functions that could do this but no luck.

My code looks like this:

initial values... d=20e-6
for th=0:1:s
    i=eye(2)
    for n=50:-1:1
        i=i*function(n,th,initial data,d)
    end
end
plot(th,I,'b')
hold on
next loop

So when this ends I'd like to press a key, and make d=19e-6 and redo the code, plot, until I'm good. Thanks for answers!

Answer 1

[Rik]

Just put this code in a function. You can then use guidata to store and load that initial value, and set it as the KeyPressFcn of your figure.

[Emil Åstrand]

I'm not familiar using guidata and keypressfcn, could you please elaborate this answer?

[Rik]

Have you read the documentation for guidata or KeyPressFcn?

%Your function header should be like this:
function your_keypress_callback(source,eventdata)
handles=guidata(source);
d=handles.d;

%Your initializing function should contain something like this:
handles=struct('fig',gcf,'d',d);
guidata(handles.fig,handles)
set(handles.fig,'KeyPressFcn',@your_keypress_callback)

Preferably you would also include the handles to your subplot axes, so you can easily replace plots, instead of having to recreate the axes, but that is a next step.

[Rik]

Did my answer help you? If so, please mark it as accepted answer. If not, feel free to comment here with any remaining question.