MATLAB Central Newsreader - Calling a function by looping through a vector

Calling a function by looping through a vector

Kirk Hammett — Sun, 27 Sep 2009 04:23:00 -0400

Hello everybody,
I'm trying to call a function that takes a vector and does performs an operation on it.
I have multiple vectors to send it so I though of sending the vectors in a loop:

a, b and c are all vectors.

x = ['a' 'b' 'c'];

for i = 1 : length(x)
PerformOperation(x(i))
end

instead of:

PerformOperation(a)
PerformOperation(b)
PerformOperation(c)

Could somebody tell me how to call my function by looping through a vector? The second solution seems like a hack and I'm trying to learn the best possible way to do this.

Much appreciated.

Re: Calling a function by looping through a vector

dpb — Sun, 27 Sep 2009 04:32:50 -0400

Kirk Hammett wrote:
> Hello everybody,
> I'm trying to call a function that takes a vector and does performs an operation on it.
> I have multiple vectors to send it so I though of sending the vectors in a loop:
>
> a, b and c are all vectors.
>
> x = ['a' 'b' 'c'];
>
> for i = 1 : length(x)
> PerformOperation(x(i))
> end
>
> instead of:
>
> PerformOperation(a)
> PerformOperation(b)
> PerformOperation(c)
>
> Could somebody tell me how to call my function by looping through
> a vector? The second solution seems like a hack and I'm trying to
> learn the best possible way to do this.

x = {a b c};
for i = 1: length(x)
yourfunc(x{i});
end

--

Re: Calling a function by looping through a vector

Kirk Hammett — Sun, 27 Sep 2009 04:58:03 -0400

Thank you for your help!

Re: Calling a function by looping through a vector

Loren Shure — Mon, 28 Sep 2009 12:38:29 -0400

In article <h9mpb4$b0r$1@fred.mathworks.com>, leprekhan@yahoo.com
says...
> Hello everybody,
> I'm trying to call a function that takes a vector and does performs an operation on it.
> I have multiple vectors to send it so I though of sending the vectors in a loop:
>
> a, b and c are all vectors.
>
> x = ['a' 'b' 'c'];
>
> for i = 1 : length(x)
> PerformOperation(x(i))
> end
>
> instead of:
>
> PerformOperation(a)
> PerformOperation(b)
> PerformOperation(c)
>
> Could somebody tell me how to call my function by looping through a vector? The second solution seems like a hack and I'm trying to learn the best possible way to do this.
>
> Much appreciated.
>

The function arrayfun might help.

--
Loren
http://blogs.mathworks.com/loren