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Re: for loop elimination [message #56201]

Mon, 15 October 2007 15:48

Jean H.
Messages: 472
Registered: July 2006

Senior Member

jtmcahill@gmail.com wrote:

> Hello,
>
> I have been trying without success to get this simple calculation to
> be done without using a loop. Here it is:
>
> for y2=0L,n2-1 do e_sc[0,y2]=max(abs(sc_arr[*,y2]-model_sc[12:bands
> +11,y2]))
>
> Can I use the max function without and get an array of outputs without
> having to do them one at a time. To put this into context, I have a
> program that this piece of code is in and the program is taking too
> long to compute. I'm figuring I start with eliminating for loops and
> go from there to make it more efficient. Any ideas on this piece?
>
> Hawaiianite

Hi,

MAX() can get a dimension keyword... the help file is pretty straight
forward and contains examples!

Now you can also vectorize the subtraction!

Jean

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		Re: for loop elimination By: Jean H. on Mon, 15 October 2007 15:48
		Re: for loop elimination By: jtmcahill on Wed, 17 October 2007 19:04

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