Output argument "PulsTijd" (and maybe others) not assigned during call to (location)

I use this function in 2 independent scripts. In the first it works without a problem. When I adress it in a second (seperated) script, it gives the error:

Output argument "PulsTijd" (and maybe others) not assigned during call to (location). I read other threats about this topic without result.

What is the way to resolve this problem please?

function[Pulsen,VerlopenTijd,Totaal,PulsTijd] = PulsenTeller(Data,TijdArray,Start,Einde)

Totaal = ones(1,length(TijdArray))-1;

Pulsen = 0;

Q = 0;

NietInPuls = true;

Tijd = 0;

PulsGevonden = false;

DrempelVoltage = 5;

for i=Start:Einde

    if i > Start     

    Totaal(i) = Totaal(i-1);

    end

    if (Data(i)>DrempelVoltage) && NietInPuls               

            NietInPuls = false;                                    

            if PulsGevonden                                    
                Tijd = TijdArray(i)- TijdStart;                        
                Pulsen = Pulsen + 1;                                  
                Totaal(i) = Totaal(i)+1;                               
            else                                                    
                TijdStart = TijdArray(i);                              
                Totaal(i) = 0;                                     
                Pulsen = 0;                                        
            end
            PulsGevonden = true;                                

    elseif Data(i) <= DrempelVoltage    

        NietInPuls = true;                                    
    end
end

for i=Einde:length(Data)

    Totaal(i)=Totaal(Einde);
end
    PulsNummer=1;

    InPuls=false;    

    PulsGevonden=false;

for i=Start:Einde

if i > Start    

Totaal(i) = Totaal(i-1);

end

    if Data(i)>DrempelVoltage   

        InPuls=true; 

    else if(Data(i)<DrempelVoltage) && InPuls   

        InPuls=false;                                    

        if PulsGevonden                                                     
        PulsNummer=PulsNummer+1;                                              
        BeginTijd(PulsNummer)= TijdArray(i);                                    
        PulsTijd(PulsNummer)= BeginTijd(PulsNummer)-BeginTijd(PulsNummer-1);    

        else                                                                     
        BeginTijd(PulsNummer)=TijdArray(i);
        PulsNummer=1;
        end
        PulsGevonden=true;
    end    
    end
end

VerlopenTijd = Tijd;

Answer 1

[Image Analyst]

Your output arguments are Pulsen,VerlopenTijd,Totaal,PulsTijd. However, you only initialized Pulsen and Totaal. Initialize everything first:

Totaal = ones(1,length(TijdArray))-1;
Pulsen = 0;
VerlopenTijd = 0; % Whatever....
PulsTijd = 0;     % Whatever....

Then at least they will have SOME value whenever your function returns. Then use this link to step through your code and figure out why PulsTijd never got assigned.

Also see this link so that you can format your posts porperly.

Answer 2

[Thomas Koelen]

Explanation:

One of the functions you have called is defined to return an output argument but that output argument does not exist in the function when it tries to return.

Common causes:

You have misspelled the name of one of your output arguments inside your function, or you have forgotten to assign a value to one of the output arguments of your function. Alternatively, the function was originally written with one or more output arguments, but the section of the function that computed the output argument was removed or modified in such a way that the output argument is now extraneous.

Solution:

Stop MATLAB on the last line of the function listed in the warning or error message. Verify that each of the output arguments listed in the function declaration line at the beginning of the function exist after that last line is executed (using the DBSTEP function or the Step button in the Editor). If the arguments do not exist, examine the function to determine where you intended the arguments to be declared. Verify that those lines of code are being executed and have no typographical errors.