[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: help with vectorizing a for loop
From: |
Martin Helm |
Subject: |
Re: help with vectorizing a for loop |
Date: |
Mon, 03 Oct 2011 13:42:17 +0200 |
Am Montag, den 03.10.2011, 00:09 -1000 schrieb Rick T:
> Greetings All
>
>
> I have a for loop that reads an array but I would like to vectorize it
> to see if will improve speed. at the moment the for loop takes about 7
> mins any ideas to speed this up
>
>
> The array called inner_freq has three columns made up of
> amplitude,frequency, and phase
>
>
> for ii=1:1:length(inner_freq)-1
>
>
> aa_sig_rebuilt=inner_freq(ii,2)*cos(2*pi*t*inner_freq(ii,1)+inner_freq(ii,3));
> aa_sig_combined=aa_sig_combined+aa_sig_rebuilt;
> end;
>
>
> thanks
This is just out of my head and not tested:
aa_sig_combined=sum(inner_freq(1:end-1,2).*cos(2.*pi.*t.*inner_freq(1:end-1,1).+inner_freq(1:end-1,3)))
- help with vectorizing a for loop, Rick T, 2011/10/03
- Re: help with vectorizing a for loop, Bård Skaflestad, 2011/10/03
- Re: help with vectorizing a for loop,
Martin Helm <=
- Re: help with vectorizing a for loop, Thomas Weber, 2011/10/03
- Re: help with vectorizing a for loop, Rick T, 2011/10/04
- Re: help with vectorizing a for loop, Martin Helm, 2011/10/04
- Re: help with vectorizing a for loop, Rick T, 2011/10/04
- Re: help with vectorizing a for loop, Martin Helm, 2011/10/04
- Re: help with vectorizing a for loop, Martin Helm, 2011/10/04
- Re: help with vectorizing a for loop, Rick T, 2011/10/04
- Re: help with vectorizing a for loop, Martin Helm, 2011/10/05
- Re: help with vectorizing a for loop, Rick T, 2011/10/05
- Re: help with vectorizing a for loop, Martin Helm, 2011/10/05