Error with anonymous call: Undefined function "times" for function_handle

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Martin Nors Pedersen 2013-10-30

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https://ww2.mathworks.cn/matlabcentral/answers/104417-error-with-anonymous-call-undefined-function-times-for-function_handle

编辑： Martin Nors Pedersen 2013-10-30

Hello everyone

i have a quite long formula which i have attempted to split up into two separate functions. I would then like to call the first function within the second function when i integrate the second function - but i run in to the error message shown below:

Undefined function 'times' for input arguments of type
'function_handle'.

i have googled and can see that many have been given this type of problem when they forget to add the variable in the function call. but as far as i can see, i call the function correct and still get the error - can anyone see what i am doing wrong? any help or suggestion would be greatly appreciated.

My code is shown below:

R = 5;
epsR = 25;
eps = epsR/R;
Qrange = 0.01:0.001:2;
Rdot = @(x) R.*sqrt(sin(x).^2+eps^2.*cos(x).^2);
fun_P = @(y) ((3.*sin(Qrange.*Rdot(y))-3.*...(Qrange.*Rdot(y)).*cos(Qrange.*Rdot(y)))./(Qrange.*Rdot(y).^3)).^2.*sin(y);
P_elip = integral(fun_P,0,pi/2,'ArrayValued',1);

as you can see, i make sure to use Rdot(y) and not just Rdot in my code. i have checked the Rdot function and i works fine e.g. Rdot(1) = 14.1476.

ps. i know i use more parenthesis than i strictly have to, but the help keep track of the different terms. i hope it is not too unclear

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Walter Roberson 2013-10-30

If I copy and paste that into R2013b then I do not get an error.

Martin Nors Pedersen 2013-10-30

编辑：Martin Nors Pedersen 2013-10-30

I just checked again and you are right - i checked it several times back then and i got an error message each time. at least it works now :)

btw., in case someone else would like to calculate the scattering from an ellipsoid: there a mistake in the code above. as it stands now, only Rdot(y) is cubed in the denominator - it should be (Qrange.*Rdot(y)).^3

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