Is it possible to create multiple functions and calling them in one .m file?
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Ekin
el 27 de Ag. de 2013
Comentada: Walter Roberson
el 19 de Sept. de 2017
I have a question about calling a function in Gui. Here is an example of my code:
function pushbutton1_Callback(hObject, eventdata, handles)
ABC = handles.Murthy(result); %%????? This line
%button implementation
function maxmax = Murthy (result)
%Murthy implementation
The function Murthy also contains "axes(handles.axes1);" etc. How to call function Murthy without deleting gui control codes (like "axes(handles.axes1)" etc) from it? Thanks in advance!
4 comentarios
Walter Roberson
el 27 de Ag. de 2013
Editada: Walter Roberson
el 27 de Ag. de 2013
ABC = handles.Murthy(result);
is not going to work because you do not have "result" defined.
Is Murthy going to return the name of an axis ? Is it going to return an axes object that you then want placed under a figure determined by pushbutton1_Callback ??
Respuesta aceptada
Iain
el 28 de Ag. de 2013
Editada: Iain
el 28 de Ag. de 2013
Generically, this is the process:
function whee = whatevs(a,b,c) %1st line of m file
whee = alpha(a) + beta(b) + gamma(c);
end
function a = alpha(x) %still in the whatevs.m
a = x.^2;
end
function b = beta(x) %still in the whatevs.m
b = 2.^x;
end
function c = gamma(x) %still in the whatevs.m
c = x^x;
end
You can also "nest" functions: eg, gamma could be:
function c = gamma(x) %still in the whatevs.m
c = banana^x;
function b = banana
b = randn*5;
end
end
2 comentarios
Sara
el 19 de Sept. de 2017
Lain, how do you call function b or c in a separate script this way?
I know it is possible to make separate .m files for each function and call them that way. I currently have a script that calls three functions, which are all each their own .m file. I am trying to simplify my code some, so if you can do it the way you described, this would help.
Walter Roberson
el 19 de Sept. de 2017
To be able to call a function from outside of the file it is stored in:
1) the function can be in its own file named the same as the function (like you have now); or
2) somehow the calling function has to have been given a handle to the function to be called. For example,
function fh = switchyard(which_function)
switch lower(which_function)
case 'add': fh = @add_all_the_things;
case 'ghoti': fh = @go_fish;
otherwise:
error('not a known function for switchyard');
end
end
function [a, b, c] = add_all_the_things(....)
...
end
function d = go_fish(....)
...
end
Then another function could say,
fish = switchyard('ghoti');
r = fish( randi(13) );
The switchyard function would return a handle to the go_fish function stored in switchyard.m and then once the calling function has that handle, it can invoke it.
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