Re: Finite difference operator

[Juan Pablo Carbajal]

Luis,
Thanks, I will check the books. Btw, being no copyright means is
proprietary. Do you know who's the owner? We could ask for a release.
I was going to implement this method
Fornberg, Bengt (1988), "Generation of Finite Difference Formulas on
Arbitrarily Spaced Grids",Mathematics of Computation 51 (184):
699–706,doi:10.1090/S0025-5718-1988-0935077-0, ISSN 0025-5718.

But I am sure it was already in octave, but with the usual undescriptive name...

On Fri, May 31, 2013 at 5:34 PM, louis scott <address@hidden> wrote:
> Rings a bell, see Nick Trefethen
> Ch 3 of Finite Difference and Spectral Methods: Finite Difference
> Approximations (theorems 3.1 - 3.2)  As for code, the follow up book,
> Spectral Methods:
> http://people.maths.ox.ac.uk/trefethen/all.m
>
> Should be somewhere in there. Note there is no copyright, no disclaimer, he
> is an old school numerical analyst.
>
>
> On Fri, May 31, 2013 at 3:52 PM, Juan Pablo Carbajal <address@hidden>
> wrote:
>>
>> On Fri, May 31, 2013 at 4:47 PM, Nir Krakauer <address@hidden>
>> wrote:
>> > http://octave.sourceforge.net/octave/function/diff.html
>> > or something more sophisticated?
>>
>> Thanks, yes far more sophisticated. I need to control accuracy... I
>> mean a function to generate these guys
>> http://en.wikipedia.org/wiki/Finite_difference_coefficient
>> http://en.wikipedia.org/wiki/Difference_operator
>>
>> If it is not there (though I really remember it was there) I can write it.
>> _______________________________________________
>> Help-octave mailing list
>> address@hidden
>> https://mailman.cae.wisc.edu/listinfo/help-octave
>
>

Luis,
Thanks, I will check the books. Btw, being no copyright means is
proprietary. Do you know who's the owner? We could ask for a release.
I was going to implement this method
Fornberg, Bengt (1988), "Generation of Finite Difference Formulas on
Arbitrarily Spaced Grids",Mathematics of Computation 51 (184):
699–706,doi:10.1090/S0025-5718-1988-0935077-0, ISSN 0025-5718.

But I am sure it was already in octave, but with the usual undescriptive name...