MATLAB: Number of functions in a function-M file

functions

Is it that there should be only one function in a function M file or there can be any number of functions in a function M file?

Best Answer

A m-file can have more than one function.

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MATLAB: How to call a function m-file within another m-file

Just call that function. If you have a function called myfun defined in myfun.m, you can call it anywhere in another m file.

a=1;
for k=1:3
myfun;
end

See http://www.mathworks.com/help/techdoc/learn_matlab/f4-2525.html

MATLAB: M-file function

Your function is calling itself without approaching any convergance or something that will allow it to end. Therefore it will run forever and eventually out of memory (hence the error). Try splitting it up into a script and a function as so:

Script:

 %creating window of plot from -5 to 50 using stepsize 0.25 for t x-axis
 %t should be on the x axis, v should be on the y axis
 k=0; 
for i= -5:.25:50
    k = k+1;
    t(k)=i;
    v(k)=vPieceWise(t(k));
end 
plot(t,v);
 
figure
plot(t,v);
hold on

Function:

%Part A: Mfile function to compute v as a function of t
function v = vPieceWise(t)
 if (t < 0)
        v = 0;
    elseif (0 <= t)&&(8<=16)
        v = -5*t+10*t.^2;
    elseif (8<=16)&&(t<=16)
        v = 624 - 3*t;
    elseif (t<=16)&&(t<=26)
        v = 12*(t-16).^2+36*t;
    elseif (26<t)
        v = 2136*exp(-0.1*(t-26));
 end

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Related Solutions

MATLAB: How to call a function m-file within another m-file

MATLAB: M-file function

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