CODEWITHSUNDEEP
matlabmatrix
yode
yode

Reputation: 633

How to apply a function into every element

If I have vector [1,2,3,4],I hope to use a function f into every element to get

[f(1),f(2),f(3),f(4)]

If I have a matrix mat

>> mat=magic(3)
mat =
     8     1     6
     3     5     7
     4     9     2

I hope to get

     f(8)     f(1)     f(6)
     f(3)     f(5)     f(7)
     f(4)     f(9)     f(2)

Is any simple method to do this in matlab?

Upvotes: 0

Views: 74

Answers (1)

ibezito
ibezito

Reputation: 5822

Solution

Use MATLAB's arrayfun function as follows: 

arrayfun(f,mat)

Example

mat = magic(3); %defines input
f = @(x) x.^2; %defines f (f is the square function)
arrayfun(f,mat); %applies f on mat

Results

mat =

 8     1     6
 3     5     7
 4     9     2

arrayfun(f,mat)=

64     1    36
 9    25    49
16    81     4

Upvotes: 1

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