Want to apply two different functions on different elements of a vector.

Question

Vinay Killamsetty 2019-5-9

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评论： Vinay Killamsetty 2019-5-9

How can we operate two seperate functions on elements of a row vector: one function should be operated on even position elements and other function should be operated on odd position elements by using array function or by any other means.

Finally the outcomes of those operations should be combined as a another row vector

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Erivelton Gualter 2019-5-9

Hi dear,

Could you clarify this problem better? WOuld be help full to share some code as well.

Vinay Killamsetty 2019-5-9

Sure Mr. Erivelton Gualter

a=1

b=5

odd=@(w) a*w+b*w^2

even=@(w) a*w^2+b*w

curr_w=[some user defined 1*n vector];

I want to perform even function on even position elements in curr_w and odd function on odd position elements to get the output vector curr_w.

If you need any additional information please let me know

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Answer 1

Alex Mcaulley 2019-5-9

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https://ww2.mathworks.cn/matlabcentral/answers/461168-want-to-apply-two-different-functions-on-different-elements-of-a-vector#answer_374299

编辑：Alex Mcaulley 2019-5-9

在 MATLAB Online 中打开

a = 1;
b = 5;
odd = @(w)   a*w+b*w^2;
even = @(w)  a*w^2+b*w;
curr_w = rand(1,5);
aa = arrayfun(odd,curr_w(1:2:numel(curr_w)));
bb = arrayfun(even,curr_w(2:2:numel(curr_w)));
res(1:2:numel(curr_w)) = aa;
res(2:2:numel(curr_w)) = bb;