Hi Fran,
Le 12/08/2011 16:51, Fran Lattanzio a écrit :
I have a working prototype for real univariate functions that uses
finite differences. The code is very small and simple, but quite
messy. I'll clean it up soon. It's trivial to extend this to
univariate vectorial and matrix functions. I thi
I have a working prototype for real univariate functions that uses
finite differences. The code is very small and simple, but quite
messy. I'll clean it up soon. It's trivial to extend this to
univariate vectorial and matrix functions. I think it's also worth add
Savitzky-Golay smoothing filters fo
Thanks for the information Luc. I didn't know those existed. I'm happy
to keep the discussion at the implementation levels.
On 8/12/2011 6:23 AM, Luc Maisonobe wrote:
Le 12/08/2011 00:30, Patrick Meyer a écrit :
I like the idea of adding this feature. What about an abstract class
that implemen
Hi Luc,
>
> I don't fully agree with this. Both numerical and analytical approach are
> useful and have advantages and drawbacks.
>
Wowww!
I certainly did not want to start a debate on this topic. I'm just
reporting on a conference I heard which lead me think that CM users
might find such a featur
Hi Sébastien,
Le 12/08/2011 07:50, Sébastien Brisard a écrit :
As Patrick suggested, this approach should really be extended to
multivariate functions. To cite but one example, I recently attended a
conf where Pr. Prevost (Princeton) talked about non-linear finite
elements calcs. The long standi
Hi Bruce,
Le 12/08/2011 00:47, Bruce A Johnson a écrit :
I'd be quite interested in seeing Numerical Derivatives in CM. There are some
interesting ideas about Numerical Differentiation here:
http://www.holoborodko.com/pavel/numerical-methods/
Thanks for the link.
Do you think we should have
Le 12/08/2011 00:30, Patrick Meyer a écrit :
I like the idea of adding this feature. What about an abstract class
that implements DifferentiableMultivariateRealFunction and provides the
method for partialDerivative (). People could then override the
partialDerivative method if they have an analyt
As Patrick suggested, this approach should really be extended to
multivariate functions. To cite but one example, I recently attended a
conf where Pr. Prevost (Princeton) talked about non-linear finite
elements calcs. The long standing approach had always been to
implement the analytical expression
I'd be quite interested in seeing Numerical Derivatives in CM. There are some
interesting ideas about Numerical Differentiation here:
http://www.holoborodko.com/pavel/numerical-methods/
Bruce
On Aug 11, 2011, at 6:30 PM, Patrick Meyer wrote:
> I like the idea of adding this feature. What abo
I like the idea of adding this feature. What about an abstract class
that implements DifferentiableMultivariateRealFunction and provides the
method for partialDerivative (). People could then override the
partialDerivative method if they have an analytic derivative.
Here's some code that I'm h
Le 11/08/2011 23:27, Fran Lattanzio a écrit :
Hello,
Hi Fran,
I have a proposal for a numerical derivatives framework for Commons
Math. I'd like to add the ability to take any UnivariateRealFunction
and produce another function that represents it's derivative for an
arbitrary order. Basicall
Hello,
I have a proposal for a numerical derivatives framework for Commons
Math. I'd like to add the ability to take any UnivariateRealFunction
and produce another function that represents it's derivative for an
arbitrary order. Basically, I'm saying add a factory-like interface
that looks somethi
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