Passing parameters throughout nested functions

Hello I've some problems to handle some parameters that I've originally generated in a function which calls (trought callbacks) more functions whic use those parameters and update them. In the following an example of what I mean.

"Data" should be updated by callbacks @myinput and then @mygraph and return to the main function.

I don't know how to handle the outputs of callbacks.

Many thanks in advance for any suggestion.

Salvatore

*************************

function Data=Interface()

    Data.a = ...;
    Data.b = ...;
    Data.c = [];

uicontrol(...,'Callback',{@myinput, Data});

    ...

uicontrol(...,'Callback',{@mygraph, Data});

      function myinput(Data)
           Data.c = ...;
           Data.a.x = ...;
           ...
      end

      function mygraph(Data)
           A = Data.a;
           B = Data.a.x;
           C = Data.b;
           Data.d = ...;
      end

end

Answer 1

[Kevin Claytor]

Is this in a GUI? I'd have a look at guidata() and at get/setappdata, both of which help solve the problem of handling data in GUI's. Some examples;

function foobar(figure_handle)
  figdata = guidata(figure_handle);
  data = figdata.data;
  % do stuff
  % Store the data again
  figdata.data = data;
  guidata(figure_handle, figdata);

And for get/setappdata;

function foobar(figure_handle)
  mydata = getappdata(some_handle,'data');
  % do stuff
  % Store the data again
  setappdata(some_handle, 'data', mydata);

[Salvatore]

Hi Kevin,

while waiting for an answer I've found the guidata function.

This is the answer to my question.

Many thanks

Salvatore