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From: Mayub on 9 Aug 2010 12:29
"us " <us(a)neurol.unizh.ch> wrote in message <i3o93h$kum$1(a)fred.mathworks.com>...
> "Mayub " <maahluwalia(a)hotmail.com> wrote in message <i3ntec$kgo$1(a)fred.mathworks.com>...
> > "Matt Fig" <spamanon(a)yahoo.com> wrote in message <i3ikb5$lij$1(a)fred.mathworks.com>...
> > > According to the help for RAND:
> > >
> > > Generate uniform values from the interval [a, b].
> > > r = a + (b-a).*rand(100,1);
> >
> > Thank you, I knew this formula from Excel, but did not recall it. Based on this I wrote the code below where the file min_max.txt contained the values I mentioned above - first row in it being min and second max. I think it is correct, because the output was OK, but please let me know your feedback. Many thanks again!
> >
> > A = rand(9,3);
> > rowcoldata = size(A);
> > nrows = rowcoldata(1,1);
> > ncols = rowcoldata(1,2);
> >
> > MM = load('min_max.txt');
> >
> > D1 = zeros(nrows, ncols);
> > >> for i = 1:ncols
> > D1(:,i) = A(:,i)* (MM(2, i) - MM(1, i))+ MM(1, i); % multiply the difference first, then add min
> > end
> > >> D = [D1];
> > save('data.txt','D','-ascii');
>
> well... just a bit of a manicure
> 1) no need to create extra vars D/D1, simply overwrite your A in the loop
> unless, of course, you'd use your A in other places, which does not seem to be
> the case...
> 2) the construct D=[D1] is not necessary
>
> us



sounds good, thanks for prompt replies!
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