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Re: Can Mathematica interpolate non-uniform scatter data?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg107045] Re: Can Mathematica interpolate non-uniform scatter data?
  • From: Lawrence Teo <lawrenceteo at yahoo.com>
  • Date: Mon, 1 Feb 2010 06:13:29 -0500 (EST)
  • References: <hjmjgg$ee$1@smc.vnet.net> <hjon95$4ga$1@smc.vnet.net>

Hi DH,
This is so upsetting. I need the answer so urgently but just can't see
your reply. :)



On 29 Jan, 20:43, dh <d... at metrohm.com> wrote:
> lately my post get mutilated, we are still seraching the reason.  try a=
gain:
>
> to do it. Anyway, here is it:
>
> now we can do the interpolation:
>
> Lawrence Teo wrote:
> > On Jan 27, 2:42 pm, dh <d... at metrohm.com> wrote:
> >> to do it. Anyway, here is it:
> >> now we can do the interpolation:
> >> Lawrence Teo wrote:
> >>> Hi all,
> >>> Can Mathematica interpolate non-uniform scatter data?
> >>> Like ListInterpolation or Interpolation functions...
> >>> z = {{0.`, 0.`, 0.`, 0.`, 0.`, 0.`, 0.`, 0.`, 0.`}, {0.`, ,
> >>>     0.12467473338522769`, 0.18640329676226988`,
> >>>     0.24740395925452294`, , 0.36627252908604757`,
> >>>     0.42367625720393803`, 0.479425538604203`}, {0.`,
> >>>     0.12467473338522769`, 0.24740395925452294`, 0.366272529086047=
57=
> > `,
> >>>     0.479425538604203`, 0.5850972729404622`, 0.6816387600233341`,=
 ,
> >>>     0.8414709848078965`}, {0.`, 0.18640329676226988`,
> >>>     0.36627252908604757`, 0.5333026735360201`, 0.6816387600233341=
`,
> >>>     0.806081108260693`, 0.9022675940990952`, 0.9668265566961802`,
> >>>     0.9974949866040544`}, {0.`, 0.24740395925452294`,
> >>>     0.479425538604203`, 0.6816387600233341`, 0.8414709848078965`,
> >>>     0.9489846193555862`, 0.9974949866040544`, 0.9839859468739369`=
,
> >>>     0.9092974268256817`}};
> >>> g = ListInterpolation[z, {{0, 1}, {0, 2}}];
> >>> g[0.5, 0.5]
> >>> However, the previous interpolation will give us a lot of NULL in the
> >>> expression...



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