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Re: Splines
From: |
Jaroslav Hajek |
Subject: |
Re: Splines |
Date: |
Wed, 1 Oct 2008 11:56:11 +0200 |
On Wed, Oct 1, 2008 at 11:26 AM, Kearan Mc Pherson
<address@hidden> wrote:
> Hi
>
> I plot a 3D graph using two data.dat files like this :
>
> d1 = load graph.dat ;
> d2 = load graph2.dat ;
> d1 = sortrows (d1);
> d2 = sortrows (d2);
>
> x = unique ([d1(:,1); d2(:,1)]);
> y = interp1 (d1(:,1), d1(:,2), x, "cubic", "extrap");
> z = interp1 (d2(:,1), d2(:,2), x, "cubic", "extrap");
>
> plot3 (x, y, z);
>
The interp1 functions *are* using splines when you specify "cubic"
interpolation.
To get a denser sample, you can add
x = linspace (min(x), max(x), 1000).';
or something similar after the `x = unique' line.
> I would like to use splines, can anyone please assist me regarding this
> matter, as i'm new to octave and gnuplot. thanks and regards
>
> _______________________________________________
> Help-octave mailing list
> address@hidden
> https://www-old.cae.wisc.edu/mailman/listinfo/help-octave
>
>
--
RNDr. Jaroslav Hajek
computing expert
Aeronautical Research and Test Institute (VZLU)
Prague, Czech Republic
url: www.highegg.matfyz.cz
- Splines, Kearan Mc Pherson, 2008/10/01
- Re: Splines,
Jaroslav Hajek <=
- Re: Splines, Carlo de Falco, 2008/10/01
- Re: Splines, Jaroslav Hajek, 2008/10/01
- Re: Splines, Carlo de Falco, 2008/10/01
- Re: Splines, Jaroslav Hajek, 2008/10/01
- Re: Splines, Carlo de Falco, 2008/10/01
- Re: Splines, Kearan Mc Pherson, 2008/10/21
Re: Splines, Carlo de Falco, 2008/10/01