array of anonymous function

hello,

I need help on anonymous function.

i need to calc array of obj [obj1, obj2, obj3] in loop each time , i call to obj with syms V and parameters value I0, IL, Rs, Rp, Vt_Ta which define before.

i try to define clussdef of obj, but get an errore.

Thanks a lot

for k=1:3
    obj = @(V) I_fun(V, I0, IL, Rs, Rp, Vt_Ta) - target_value;
    fplot(obj{k},[0 55],'LineWidth',2);
end

Answer 1

[Matt J]

clear obj
for k=3:-1:1
    obj{k} = @(V) I_fun(V, I0, IL, Rs, Rp, Vt_Ta) - target_value;
    fplot(obj{k},[0 55],'LineWidth',2);
end

[david]

thanks about responde; i get this errore

"Unable to perform assignment because brace indexing is not supported for variables of this type."

for k=1:3

obj{K} = @(V) I_fun(V, I0(k), IL(k), Rs(k), Rp(k), Vt_Ta(k)) - target_value;

fplot(obj{k},[0 55],'LineWidth',2);

end

when

I0=[1.3e-10 1e-10 1e-10];

IL=[4.44 4.4 4.3];

Ns=72;

Rs=[3.6 3 2.7];

Rp=[120 130 190];

N=[0.95 0.96 0.97]

[Steven Lord]

To what did you initialize the obj array prior to your loop? If you assigned an anonymous function to obj then tried to extend that array using brace indexing, that won't work. Preallocate the variable as a cell array and fill in the cells.

obj = cell(1, 5);
for k = 1:5
    obj{k} = @(x) x.^k;
end
check = obj{4}(3) % 3^4 = 81

check = 81

Compare this with:

obj2 = @(x) x.^1;
for k = 2:5
    obj2{k} = @(x) x.^k; % will error
end

Unable to perform assignment because brace indexing is not supported for variables of this type.

[david]

Thanks you,

i try it but get an errore again, here the code i try to run

V = linspace (0,50);

I0=[1.3e-10 1e-10 1e-10];

IL=[4.44 4.4 4.3];

Ns=72;

Rs=[3.6 3 2.7];

Rp=[120 130 190];

N=[0.95 0.96 0.97]

Vt_Ta = [1.7885 1.7699 1.788];

obj = cell(1,3);

for k=1:3

obj{K} = @(V) I_fun(V, I0(k), IL(k), Rs(k), Rp(k), Vt_Ta(k)) - target_value;

fplot(obj{k},[0 55],'LineWidth',2);

end

V = linspace (0,50);

I(j) = zeros(size(V));

for j=1:6;

% Newton Raphson Method

I = I- (IL- I- I0.*( exp((V+I.*Rs)./Vt_Ta) -1)-(V+I.*Rs)/Rp)./ (-1 - I0.*(Rs/Vt_Ta)*exp((V+I.*Rs)./Vt_Ta)-Rs/Rp);

end

[Paul]

did the error arise because the for loop index variable is k (lower case) , but the index variable into the obj cell array is K (upper case)?

[david]

Thank, i see it later.