How to convert a cell array containing various inline functions to a unique inline function?
3 views (last 30 days)
Show older comments
I need to use the fminimax function and the input has to be necessarily a single inline function. But I need several equations in this function. And I'm going to add them one by one through a for loop in a cell.
I need to convert this:
cell =
1×3 cell array
{@(x)(a(1,1)-x)^2} {@(x)(a(2,2)-x)^2} {@(x)(a(3,3)-x)^2}
For this:
func =
function_handle with value:
@(x)[(a(1,1)-x)^2;(a(2,2)-x)^2;(a(3,3)-x)^2]
0 Comments
Accepted Answer
More Answers (1)
TADA
on 5 Jun 2019
Edited: TADA
on 5 Jun 2019
You can generate a function handle which will execute all the handles in a cell array using closures:
a = magic(3);
myFunctions = [{@(x)(a(1,1)-x)^2} {@(x)(a(2,2)-x)^2} {@(x)(a(3,3)-x)^2}];
aggregatedFunctionHandle = genFunHandle(myFunctions);
disp(aggregatedFunctionHandle(10));
function foo = genFunHandle(handles)
function y = func(x)
y = cellfun(@(fh) fh(x), reshape(handles, numel(handles), 1));
end
foo = @func;
end
output:
6724
4900
6084
but if your functions are always of that format: @(x)(a(i,i)-x)^2
do this instead:
f = @(x) (diag(a)-x).^2
1 Comment
TADA
on 5 Jun 2019
also possible with an inline closure like that:
a = magic(3);
myFunctions = [{@(x)(a(1,1)-x)^2} {@(x)(a(2,2)-x)^2} {@(x)(a(3,3)-x)^2}];
aggregatedFunctionHandle =...
@(x) cellfun(@(fh) fh(x), reshape(myFunctions, numel(myFunctions), 1));
See Also
Categories
Find more on Function Creation in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!