2D interpolation
in [Fortran]
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From: Dieter Britz on 7 Jan 2010 07:52 Can someone point me at a free subroutine in Fortran for 2D interpolation that is more recent that the 1980's? -- Dieter Britz (dieterbritz<at>yahoo.com)
From: Arjen Markus on 7 Jan 2010 08:52 On 7 jan, 13:52, Dieter Britz <dieterbr...(a)yahoo.com> wrote: > Can someone point me at a free subroutine in Fortran for 2D interpolation > that is more recent that the 1980's? > -- > Dieter Britz (dieterbritz<at>yahoo.com) netlib.org is the authoritive source of course, but why the need for something more recent than the 1980's? Do you expect a new algorithm has popped up? Regards, Arjen
From: Gordon Sande on 7 Jan 2010 09:08 On 2010-01-07 08:52:05 -0400, Dieter Britz <dieterbritz(a)yahoo.com> said: > Can someone point me at a free subroutine in Fortran for 2D interpolation > that is more recent that the 1980's? The classical interpolation methods are based on mathematics developed in the 1800s. The mathematics has not changed even if the fashions in applications have. Most codes will be translations of earlier works and so will have been done some short time after their implementation language became popular. Most of netlib will be Fortran code originated some time around when sharing code by ftp became routine. Hence 1980s!
From: Dieter Britz on 7 Jan 2010 10:09 Arjen Markus wrote: > On 7 jan, 13:52, Dieter Britz <dieterbr...(a)yahoo.com> wrote: >> Can someone point me at a free subroutine in Fortran for 2D interpolation >> that is more recent that the 1980's? >> -- >> Dieter Britz (dieterbritz<at>yahoo.com) > > netlib.org is the authoritive source of course, but why the need for > something more recent than the 1980's? Do you expect a new algorithm > has popped up? > > Regards, > > Arjen Point taken. What I should have asked is, what is recommended? I have tried out one, but it doesn't seem to work very well. I'll check to see what netlib has. Dieter -- Dieter Britz (dieterbritz<at>yahoo.com)
From: Arjan on 7 Jan 2010 10:35
> Point taken. I'll check to > see what netlib has. This ends the Fortran-related part of your question. > What I should have asked is, what is recommended? I have > tried out one, but it doesn't seem to work very well. Still, we might be able to help you here. I guess you used bi-linear interpolation on a regular rectangular grid. Can you please tell what you used and give an example of what went wrong (input and output) and what other result you had expected/hoped for? A. |