Re: How to plot surface using scaled axes values, not indexes

[Terry Duell]

Dmitri,

On Thu, 11 Apr 2013 13:17:47 +1000, Terry Duell <address@hidden>  
wrote:


> > Sorry -- it is getting late here and I am tired:

Must be catching...see below.
> Yes, I had lookked at meshgrid a few times, but couldn't see how I could  
> apply it when I don't have a function.
>
> > just x = jj*spac1; y = ii*spac2; surf(x,y,z) should work.
>
> Sorry to continue to be dense on this, but does the above fit in with my  
> code snippet?
> Is your jj my j, and your ii my i? What is z in the above?
> If I do...
>
> y = zeros(n,num1);
> spac2 = 12.0;
> for i=1:n
>         for j =1:num1
>                 x = j*spac1;
>                 y = i* spac2;
>                 z(i,j) = profile(2,j);
>         end
> end
> surf(x,y,z)
>
> I get...
>
> error: surface: rows (Z) must be the same as length (Y) and columns (Z)  
> must be the same as length (X)
>
> So I am clearly misunderstanding your meaning.

It finally dawned on me...the mental block was quite big :-)

This works, as I require...

spac2 = 12.0;
for i=1:n
        for j =1:num1
                x(j) = j*spac1;
                y(i) = i*spac2;
                z(i,j) = profile(2,j);
        end
end
surf(x,y,z)

Many thanks for your help.

Cheers,
--
Regards,
Terry Duell