Create a function handle sum of other function

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Pascal Denis
Pascal Denis on 14 Jan 2022
Commented: Pascal Denis on 14 Jan 2022
Hello everybody,
I try to create a function as sum of other functions, using data vectors of different size inside.
p = [0.1; 0.2; 0.3; 0.4] % p(i) is the weight associate
I get the from a Database a 4 x 6 parameter Matrix
C = [Data_11 Data_12 Data_13 Data_14 Data_15 Data_16
...
Data_41 Data_42 Data_43 Data_44 Data_45 Data_46];
I'm using an external function : func_ext(x, C_par)
— x is a scalar
— C_Par a 1x6 vector
I would like to create the following function handle as an inline function :
, where A is a constant
Do you have an idea ?
Thanks for help.
  2 Comments
Pascal Denis
Pascal Denis on 14 Jan 2022
I'm mean function Handle not an array of values

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Accepted Answer

Rik
Rik on 14 Jan 2022
Your anonymous function will become more opaque and I expect the performance to suffer, but this will work:
fun=@(x) A;
for i=1:size(p,1)
fun=@(x) fun(x) + ...
p(i)*func_ext(x,C(i,:));
end
Although I would suggest using a different loop variable than i. You have the entire alphabet, so why use something that could be confused with sqrt(-1).

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