* periodic gsl_spline problem
@ 2004-07-24 6:13 Simon Ching
2004-07-24 13:00 ` Brian Gough
0 siblings, 1 reply; 3+ messages in thread
From: Simon Ching @ 2004-07-24 6:13 UTC (permalink / raw)
To: gsl-discuss
Hello
I have a problem working with gsl_spline
with interpolation type cspline_periodic
and I am not sure if this is a bug.
Attached is a graphics showing 3 interpolation
curves from the control points shown as big
red circles. The red, green and blue lines
are from the results using cspline_periodic,
cspline and linear interpolation types
respectively.
What caught my attention is that the red curve
does not go back to (2*pi, 0).
What should be the workaround? Should I specify
9 points (including the redundant end point) for
cspline_peridic, too, instead? The would be
a little bit weird because that point is
really redundant.
I would be grateful if someone can shed some
light on me on this issue. Thank you very
much, and keep up the good work on GSL! I use
GSL everyday! :)
Regards,
Simon.
=====
Simon E Ching
-----------------------------------------------------------
email: simon_ching@yahoo.com
http://www.geocities.com/simon_ching/
_______________________________________________________________________
Do You Yahoo!?
Get your free @yahoo.com.hk address at http://mail.english.yahoo.com.hk
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: periodic gsl_spline problem
2004-07-24 6:13 periodic gsl_spline problem Simon Ching
@ 2004-07-24 13:00 ` Brian Gough
0 siblings, 0 replies; 3+ messages in thread
From: Brian Gough @ 2004-07-24 13:00 UTC (permalink / raw)
To: Simon Ching; +Cc: gsl-discuss
Simon Ching writes:
> I have a problem working with gsl_spline with interpolation type
> cspline_periodic and I am not sure if this is a bug.
>
> What caught my attention is that the red curve
> does not go back to (2*pi, 0).
Could you submit a bug report to bug-gsl@gnu.org with an
example program that reproduces the behavior -- thanks.
--
Brian Gough
Network Theory Ltd,
Commercial support for GSL --- http://www.network-theory.co.uk/gsl/
^ permalink raw reply [flat|nested] 3+ messages in thread
* periodic gsl_spline problem
@ 2004-07-24 6:17 Simon Ching
0 siblings, 0 replies; 3+ messages in thread
From: Simon Ching @ 2004-07-24 6:17 UTC (permalink / raw)
To: gsl-discuss
[-- Attachment #1: Type: text/plain, Size: 424 bytes --]
Hello,
Whoops, I forgot to attach the png! :P
Regards,
Simon.
=====
Simon E Ching
-----------------------------------------------------------
email: simon_ching@yahoo.com
http://www.geocities.com/simon_ching/
_______________________________________________________________________
Do You Yahoo!?
Get your free @yahoo.com.hk address at http://mail.english.yahoo.com.hk
[-- Attachment #2: gsl_spline.png --]
[-- Type: image/png, Size: 34454 bytes --]
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2004-07-24 13:00 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2004-07-24 6:13 periodic gsl_spline problem Simon Ching
2004-07-24 13:00 ` Brian Gough
2004-07-24 6:17 Simon Ching
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).