Passing Arguments to a UIMenu selected Function

Hello, I am creating a uimenu option on a figure that contains plots so I can scale the ylimits as I wish (i.e. force min ylim to be zero)

My plots are on axes componentns such as:

figure
ax1=subplot(1,2,1); 
ax2=subplot(1,2,2); 
plot(ax1,data(:,1),data(:,3),'*-','Linewidth',1'); grid(ax1,'on');
plot(ax2,data(:,1),data(:,4),'*-','Linewidth',1'); grid(ax2,'on');
app.myax2=ax2;    % Assign required axes, ax2, the the app property myax2 (so to be visible in an functions) 

And I create the uimenu like this:

m=uimenu('Text','YLim Options');
mitem1=uimenu(m,'Text','YLim Zero');
mitem1.MenuSelectedFcn = @app.YlimZero

where the function YlimZero is:

function YlimZero(app, ~, ~)
ax=app.myax2;
ylim(ax,[0,inf])
end 

The way I decide which axes to apply to is to define myax1, myax2 etc as app properties and access them directly in the function. However, to be generic, I want to be able to apply all this to any figure with any number of plots (and axes components, ax) - so my question is, is there a way to pass the axes I want to apply to in the menu selected function, mitem1.MenuSelectedFcn = @app.YlimAuto

(sometimes I want to apply it for example to ax1 and ax3 only and leave ax2 alone)

Thanks

Jason

Answer 1

[Jason]

I think I have a solution, I can pass which ever axes (or number of axes) to myax as follows

app.myax(1)=ax1;
app.myax(2)=ax2;

myax is a public property of my app.

Then in the YlimZero function

function YlimZero(app, ~, ~)
    n=numel(app.myax);    % Determin how many axes have been passed
    for i=1:n
        ylim(app.myax(i),[0,inf])   % Adjust the Axes as required
    end

end

[s pernot]

god bless you.

Now you realize you are great at helping yourself

congratulations

Answer 2

[s pernot]

hi jason

you have several options - see y. altman undocumented site for further details

here are my preferred way to solve this by decreasing preference order

1. create in the main function a handle struct where you attach all requires axes handles like

handles = struct;

handles.ax1 = AxesHdl1;

handles.ax2= AxesHdl2;

% you then pass this handle structure as an argument of your YlimZero callback like

mitem1.MenuSelectedFcn = {@app.YlimZero, handles};

% then beware of the definition of your callback : it should be something like

function YlimZero(hObject, event, handles)

% hObject = handle to uimenu object

% event = event message if you want to use it (or not)

% then your handles struct

% do something .... like

ylim(handles.ax1,[0,inf])

end

2 instead of passing handle struct in argument of callback, you store it and attach it to you uimenu object in the main func

like :

setappdata(mitem1, 'handles', handles);

mitem1.MenuSelectedFcn = @app.YlimZero;

%then in you callback function

function YlimZero(app, hObject, event)

handles = getappdata(hObject, 'handles');

ylim(handles.ax1,[0,inf])

end

3. less nice : you attach handle struct to mitems UserData like :

mitem1.UserData.handles = handles;

% and so on

now go to your code, old chap

best regards

Stephane

[Jason]

Hi, thanks for your fast reply. I think your solution is for GUIDE as its using handles and appdata. Im using appdesigner so they won't work.

Answer 3

[s pernot]

it also works similaly with appdesigner...

in the latter case, you can simply attach handle struct as a app property

you declare it like in the app class

properties

handles

end

% in the startupFcn

app.handles = struct;

app.handles.ax1 = AxesHdl1;

app.handles.ax2= AxesHdl2;

% and you simply use :

mitem1.MenuSelectedFcn = @app.YlimZero

function YlimZero(app, hObject, event)

% hObject = handle to uimenu object

% event = event message if you want to use it (or not)

% then your handles struct

% do something .... like

ylim(app.handles.ax1,[0,inf])

end

% that's it

[Jason]

But Im still having to decide which ax is used in the YlimZero function - this is what I'm trying to avoid. I want to select which axes to use (sometimes more than 1) in the calling function, so I can use YlimZero generically for any figures I create with this menu option.

function YlimZero(app, hObject, event)
% hObject = handle to uimenu object
% event = event message if you want to use it (or not)
% then your handles struct
% do something .... like
ylim(app.handles.ax1,[0,inf])
end 

[s pernot]

sorry for this, i am not in your head... you have to be creative

that is your own job now to achieve this... the is the real work before coding

to imagine how to make a suitable design...

Good luck