Re: LatticeReduce problem
- To: mathgroup at smc.vnet.net
- Subject: [mg59029] Re: LatticeReduce problem
- From: dh <dh at metrohm.ch>
- Date: Wed, 27 Jul 2005 01:24:52 -0400 (EDT)
- References: <dc4s9m$10a$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi Theo,
LatticeReduce wants Integers or Rationals as Input. On the other hand,
NMinimize works with Reals.
sincerely, Daniel
dto_mba at skynet.be wrote:
> dln[x_, y_] := Module[{lr},
> lr = LatticeReduce[{x, y}];
> Return[Norm[lr]]
> ]
> NMinimize[{dln[{x1, x2}, {y1, y2}],
> MatrixRank[{{x1, x2}, {y1, y2}}] ? 2, {x1, x2, y1, y2} \[Element]
> Integers}, {x1, x2, y1, y2}, Method -> NelderMead]
>
> The message I get is : LatticeReduce::latm:
> Matrix contains entry that is not rational.
>
> Apparently x and y have no value when it comes to LatticeReduce.
>
> Who can help me ?
>
> Best,
>
> Theodor Schlickmann
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